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Some times, you need to execute commands against other servers. There are some PowerShell commands with -Computer parameter to let you execute against remote server, but not all PowerShell command has this parameter. You may choose to remote to the server and execute it there, but there is another way. It may be easier and more powerful to utilize the really cool PowerShell session to perform remoting commands or for automation.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nStarting from PowerShell 2.0, Microsoft start shipping this enhanced remoting functionality, Persistence Sessions (PSSession). It uses WinRM, Microsoft implementation of WS-Management protocol (SOAP) to manage hardware and operating systems. WinRM communicates via HTTP oor HTTPS. Starting in WinRM 2.0 (PowerShell 2.0), it is listening to default port 5985 and 5986 for secured connection.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-6OTHSONqqQM/UwbeteuZjgI/AAAAAAAAC1o/85uEa9rgkpg/s1600/firewall.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-6OTHSONqqQM/UwbeteuZjgI/AAAAAAAAC1o/85uEa9rgkpg/s1600/firewall.PNG\" height\u003d\"26\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nOn the server that will receive remote command, it needs to be configured to enable PowerShell remoting. On Windows Server 2012, Windows PowerShell remoting is enabled by default. To enable remoting, use Enable-PSRemoting or Winrm quickconfig (or abbreviated version winrm qc). The command in general perform these tasks,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-zkzBwVlk1_E/UwbejUbBzkI/AAAAAAAAC1g/_gqT0bNd0Ck/s1600/Enable+WinRM.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-zkzBwVlk1_E/UwbejUbBzkI/AAAAAAAAC1g/_gqT0bNd0Ck/s1600/Enable+WinRM.PNG\" height\u003d\"76\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\n- start the WinRM service and set the service to auto startup,\u003cbr /\u003e\n- configure listener port to send and listen using http or https on any IP address,\u003cbr /\u003e\n- enable firewall exception for WinRM and open the http and https port\u003cbr /\u003e\n- register Microsoft.PowerShell, Microsoft.PowerShell.Workflow and other session configurations\u003cbr /\u003e\n\u003cbr /\u003e\nIf any server is not on domain which Kerberos authentication cannot be used, the receiving server (remote server) can be added to the trusted hosts list of the sending server (local server).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003ewinrm set winrm/config/client '@{TrustedHosts\u003d\"RemoteServerName\"}'\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIn our example,\u003cbr /\u003e\nLocal Computer : SQLTest0\u003cbr /\u003e\nRemote Computer : SQLTest1\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003ewinrm set winrm/config/client '@{TrustedHosts\u003d\"SQLTest1\"}'\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIn addition, if the sending server is not in the same subnet as receiving server, you may need to modify the firewall. By default, the firewall exception for public profiles limits access within same local subnet. Modify the remote server firewall public profile for Windows Remote Management (HTTP-In) or (HTTPS-In) to include the subnet or IP of the sending server.\u003cbr /\u003e\n\u003cbr /\u003e\nIf all settings above have been configured correctly, it is time to use PowerShell remote session. Lets's start with \u003cb\u003eEnter-PSSession\u003c/b\u003e cmdlet. This cmdlet starts an interactive remoting session. In our example,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eEnter-PSSession -ComputerName SQLTest1 -Credential TestUser\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nEnter password when when prompted. If the remote session is successfully connected, you will see the prompt preceded with remote server name.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-vFB-xaQs6os/UwbfCTi0enI/AAAAAAAAC1w/g0_ybZwTNM8/s1600/remote+successul.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-vFB-xaQs6os/UwbfCTi0enI/AAAAAAAAC1w/g0_ybZwTNM8/s1600/remote+successul.PNG\" height\u003d\"73\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThis example will check the status of the mssqlserver service and restart it.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-A1M-6-VC-0c/UwbfLwqdFrI/AAAAAAAAC14/xcNsriOfb8A/s1600/example.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-A1M-6-VC-0c/UwbfLwqdFrI/AAAAAAAAC14/xcNsriOfb8A/s1600/example.PNG\" height\u003d\"198\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nWhen the remote session is no longer needed, ends the remote interactive session with \u003cb\u003eExit-PSSession\u003c/b\u003e cmdlet.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-k1HCCw35POM/UwbfP4RaXdI/AAAAAAAAC2A/lE8MArkcmTo/s1600/exit+remote.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-k1HCCw35POM/UwbfP4RaXdI/AAAAAAAAC2A/lE8MArkcmTo/s1600/exit+remote.PNG\" height\u003d\"90\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nEnter-PSSession cmdlet serves more an ad-hoc remoting session that we remote, perform task, and end the session. If we are going to create persistent connection to remote server(s) that we could maintain for later use, use \u003cb\u003eNew-PSSession\u003c/b\u003e. New-PSSession is used to create a new remoting session and could be stored in a variable.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\n$session \u003d New-PSSession -ComputerName SQLTest1 -Credential TestUser\u003cbr /\u003e\nEnter-PSSession -Session $session\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-vqyHWXwNf2E/UwbfnR-1UPI/AAAAAAAAC2I/ovktC3HHkG8/s1600/exit+remote+still+open+session.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-vqyHWXwNf2E/UwbfnR-1UPI/AAAAAAAAC2I/ovktC3HHkG8/s1600/exit+remote+still+open+session.PNG\" height\u003d\"98\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nAfter enter the session, if we execute the Exit-PSSession, it only end the interactive session, but the connection is still open as you can see from \u003cb\u003eGet-PSSession\u003c/b\u003e cmdlet. Get-PSSession get all the PowerShell sessions on local and remote computers.\u003cbr /\u003e\n\u003cbr /\u003e\nWe can reuse to the remote connection again.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-NH6EcYphgOc/UwbftW0NsGI/AAAAAAAAC2Q/K0T-lOD82_k/s1600/remote+existing+connection.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-NH6EcYphgOc/UwbftW0NsGI/AAAAAAAAC2Q/K0T-lOD82_k/s1600/remote+existing+connection.PNG\" height\u003d\"78\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nTo remove the persistent connection, use \u003cb\u003eRemove-PSSession\u003c/b\u003e cmdlet. Use Get-PSSession to obtain the name or Id, then remove the connection with the respective name or Id.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\nGet-PSSession\u003cbr /\u003e\nRemove-PSSession -Name Session9\n\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-5u2uWdJuXZQ/UwbfzOgNowI/AAAAAAAAC2Y/_4TnnGL7HPg/s1600/remove+connection.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-5u2uWdJuXZQ/UwbfzOgNowI/AAAAAAAAC2Y/_4TnnGL7HPg/s1600/remove+connection.PNG\" height\u003d\"89\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nAnother use case for the persistent connection is that you could execute command in script block to server(s).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eInvoke-Command -Session $session -SciptBlock {Get-Service mssqlserver}\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nNote: In this example, the session only connected to one server. To set the session with multiple computers, you can list all computers in a text file and use Get-Content to retrieve the data and save it in a variable.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e$sessions \u003d Get-Content Servers.txt | New-PSSession\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nThese are some of the usage of different PSSession cmdlets. Hope this post give you a general idea of how to use PowerShell session to perform tasks on remote computer."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/9060233630935126081/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2014/02/powershell-session-execute-powershell.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/9060233630935126081"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/9060233630935126081"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2014/02/powershell-session-execute-powershell.html","title":"PowerShell Session - Execute PowerShell Commands on Remote Computer"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://3.bp.blogspot.com/-r1OO_s4vizc/Uwbi18tqVXI/AAAAAAAAC2s/mK1fE5200_w/s72-c/powershellremote.jpg","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-2714830477680869424"},"published":{"$t":"2014-01-21T00:00:00.000-06:00"},"updated":{"$t":"2014-01-21T22:54:34.625-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Backup/Recovery"}],"title":{"type":"text","$t":"SQL Server - Restore and Rebuild Master Database"},"content":{"type":"html","$t":"\u003cdiv\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-xN9u7YO2u28/Ut6a3viN-lI/AAAAAAAAC1E/z2RvRgrU2yk/s1600/master.jpg\" imageanchor\u003d\"1\" style\u003d\"clear: left; float: left; margin-bottom: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-xN9u7YO2u28/Ut6a3viN-lI/AAAAAAAAC1E/z2RvRgrU2yk/s1600/master.jpg\" height\u003d\"75\" width\u003d\"75\" /\u003e\u003c/a\u003e\u003c/div\u003e\nDo you know if the master database in SQL Server becomes corrupted or unavailable, you won't be able to bring up the SQL Server? This is how important to know the steps to restore and rebuild master database so that you could address the concern when it is required.\u003cbr /\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eSQL Server master database contains all the system-level information for the SQL Server instance. The information includes login accounts, linked servers, endpoints, database files path, instance configuration and other critical information.\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\nIn certain environment, restoring master database is included as part of disaster recovery strategy to retain all information in production (albeit there are other ways to do that like scripting out the login information using this script and deploy it in the disaster recovery instance, if login information is the only data to retain).\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\n\u003cb\u003eRestore master database\u003c/b\u003e\u003c/div\u003e\n\u003cdiv\u003e\nLet's examine the steps of restore master database. First, prepare the information below,\u003cbr /\u003e\n\u003cbr /\u003e\n- master database backup file location\u003cbr /\u003e\n- SQL Server instance name\u003cbr /\u003e\n- Are the physical file path for current system databases same as the system databases file path when the backup was taken\u003cbr /\u003e\n\u003cbr /\u003e\nIn this example,\u003cbr /\u003e\nBackup file - D:\\Backup\\master_backup.bak\u003cbr /\u003e\nSQL Server instance - default instance (mssqlserver) on current host machine (localhost)\u003cbr /\u003e\nSystem database physical file path - Same\u003cbr /\u003e\n\u003cbr /\u003e\nHere are the steps to restore master database. We will be using Powershell and SQL Server Configuration Manager (SSCM) for our steps.\u003cbr /\u003e\n\u003cbr /\u003e\n1) Make sure the SQL Server service is stopped.\u003cbr /\u003e\n\u003ccode\u003eGet-Service | where {$_.name -eq \"mssqlserver\"}\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-XlncQG81LP8/Ut6STOZFPAI/AAAAAAAACzY/wuRKK5Af2Wk/s1600/check+status.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-XlncQG81LP8/Ut6STOZFPAI/AAAAAAAACzY/wuRKK5Af2Wk/s1600/check+status.PNG\" height\u003d\"161\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIf the service is running, stop the service.\u003cbr /\u003e\n\u003ccode\u003enet stop mssqlserver\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nFor named instace (e.g. MSSQL`\\test1, ` is to escape \\ in Powershell)\u003cbr /\u003e\n\u003cbr /\u003e\n2) Make a copy of all system databases and put it in another folder. In case the restore failed and other issues arise, we could easily replace these original system databases instead of rebuilding them as discussed below.\u003cbr /\u003e\n\u003cbr /\u003e\n3) Restoring master database require SQL Server to be started in single-user mode. This could be achieve by using the -m (in SSCM) or /m (net start) parameter. We could also use /c (net start) to shorten the start up duration when starting from command prompt or Powershell.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003enet start mssqlserver /m /c\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-eLLgVpu53Co/Ut6SUgMGkdI/AAAAAAAACzw/RmKwYcOZT64/s1600/single+user+mode.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-eLLgVpu53Co/Ut6SUgMGkdI/AAAAAAAACzw/RmKwYcOZT64/s1600/single+user+mode.PNG\" height\u003d\"97\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nImportant! You may see the result as service could not be started. You may also see the 'Change Pending' state for the service in SSCM. That is misleading. The service has started in single user mode. In case you couldn't figure it out and you want get the service back to stopped state, you could open the task manager, identify the relevant SQL Server service (in case you have other SQL instances running) and kill the process. It should returns the service to stopped state.\u003cbr /\u003e\n\u003cbr /\u003e\n4) Use sqlcmd utility to execute command to restore master database. The parameter -S is to specify SQL Server instance. The -E parameter is to use trusted connection (the current Windows account).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\u0026amp; sqlcmd -S localhost -E\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-UYb7X9Ymxpc/Ut6SVLmtUMI/AAAAAAAAC0A/hBtbtpzLkOg/s1600/sqlcmd.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-UYb7X9Ymxpc/Ut6SVLmtUMI/AAAAAAAAC0A/hBtbtpzLkOg/s1600/sqlcmd.PNG\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nAs you see, we could connect to the SQL Server instance. The \u0026amp; operator is used in powershell to call executable.\u003cbr /\u003e\n\u003cbr /\u003e\n5) Restore master database\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\nRESTORE DATABASE [master]\u003cbr /\u003e\nFROM DISK \u003d 'D:\\backup\\master_backup.bak'\u003cbr /\u003e\nWITH CHECKSUM, STATS;\u003cbr /\u003e\nGO\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-VQrkzSDfys8/Ut6ST6Pr9II/AAAAAAAACzo/l-9eG2Yx7RU/s1600/restore+database.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-VQrkzSDfys8/Ut6ST6Pr9II/AAAAAAAACzo/l-9eG2Yx7RU/s1600/restore+database.PNG\" height\u003d\"171\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nExamine the result to verify the restore operation is successful. SQL Server should be stopped at this time. Check the status of the service, issue net stop if it is not stopped.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eGet-Service | where {$_.name -eq \"mssqlserver\"}\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-GeAXAqPJVcM/Ut6SWgk_LDI/AAAAAAAAC0Q/1yDvm_zKGeY/s1600/service+stopped.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-GeAXAqPJVcM/Ut6SWgk_LDI/AAAAAAAAC0Q/1yDvm_zKGeY/s1600/service+stopped.PNG\" height\u003d\"91\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\n6) Now, we could start the SQL Server service in the normal fashion (without single user mode). It is advised to start the SQL Server through SSCM for regular startup.\u003cbr /\u003e\n\u003cbr /\u003e\nGo to SQL Server Configuration Manager (SSCM), locate the SQL Server service and start the service.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-od_OJFj4uhU/Ut6SVcUGDMI/AAAAAAAAC0I/YGS3ORnxdXM/s1600/SSCM+start.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-od_OJFj4uhU/Ut6SVcUGDMI/AAAAAAAAC0I/YGS3ORnxdXM/s1600/SSCM+start.png\" height\u003d\"46\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\n7) Bring up SSMS and connect to the SQL Server instance for verification.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eCommon Issue\u003c/b\u003e\u003cbr /\u003e\nIf the current system databases physical path differs from the physical file path when the backup was taken, SQL Server may fail to start up. It is because SQL Server requires other system database like model database during the startup process and it is unable to find the system database files as the newly restored master database maps the files to different location. Trace flag T3608 may be utilized to start the service restricting SQL Server from starting other databases except master database. The meta data of physical path of system databases could then be modified in the master database. For example,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003enet start mssqlserver /m /c\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIf service started successfully,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\u0026amp; sqlcmd -S localhost -E\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\nALTER DATABASE [model]\u003cbr /\u003e\nMODIFY FILE\u003cbr /\u003e\n(\u003cbr /\u003e\n\u0026nbsp; NAME \u003d modeldev, FILENAME \u003d 'D:\\MSSQLSERVER\\DATA\\model.mdf'\u003cbr /\u003e\n);\u003cbr /\u003e\nGO\u003cbr /\u003e\n\u003cbr /\u003e\nALTER DATABASE [model]\u003cbr /\u003e\nMODIFY FILE\u003cbr /\u003e\n(\u003cbr /\u003e\n\u0026nbsp; NAME \u003d modellog, FILENAME \u003d 'D:\\MSSQLSERVER\\DATA\\modellog.ldf'\u003cbr /\u003e\n);\u003cbr /\u003e\nGO\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nChange other system databases if required. Stop the service and start the service in SSCM without any parameter. Once the service is started successfully, SSMS could be used to connect to the instance for verification.\u003cbr /\u003e\n\u003cbr /\u003e\nWhen connecting with SSMS, if user databases are stuck in recovery pending state, it is very likely due to the user databases physical path meta data in master database is mapping to different location. Run the query to examine,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eSELECT name, physical_name\u003cbr /\u003e\nFROM sys.master_files;\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nVerify if the physical name is pointing to the current user databases location. If not, use the alter database statement to change the meta data. You could then restart SQL Server service, or set the user database online. For example,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eALTER DATABASE [test]\u003cbr /\u003e\nSET ONLINE;\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIf all hell break loose and you couldn't get the server to start up. Replace the master database or all system database files (mdf/ldf) with the copies you made before the backup (from step 2). This should put you in the original environment before the backup. If not, the other choice may be rebuilding the system databases.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eRebuild master database\u003c/b\u003e\u003cbr /\u003e\nIf the master database is corrupted, SQL Server may fail to start up successfully. In order to fix master database corruption, it may required to\u0026nbsp;rebuild the master database. Note that rebuild operations drop and recreate all system databases including master, msdb, model and tempdb. All the data in these databases will be lost e.g. login, jobs, linked servers and etc.\u003cbr /\u003e\n\u003cbr /\u003e\nBefore rebuild, prepare information below,\u003cbr /\u003e\n- SQL Server instance name\u003cbr /\u003e\n- SQL Server account with sysadmin role and password\u003cbr /\u003e\n- SQL Server setup.exe file path\u003cbr /\u003e\n\u003cbr /\u003e\nFrom SQL Server 2008 and above, you could locate setup.exe from the original installation media or local directory where you installed the SQL Server (e.g. 110\\Setup Bootstrap\\SQLServer2012, or 100\\Setup Bootstrap\\Release depending on SQL Server version)\u003cbr /\u003e\n\u003cbr /\u003e\nHere is the rebuild command syntax,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003esetup.exe\u003cbr /\u003e\n/QUIET\u003cbr /\u003e\n/ACTION\u003dREBUILDDATABASE\u003cbr /\u003e\n/INSTANCENAME\u003dinstance_name\u003cbr /\u003e\n/SQLSYSADMINACCOUNTS\u003daccount\u003cbr /\u003e\n[/SAPWD\u003dpassword]\u003cbr /\u003e\n[/SQLCOLLATION\u003dcollation_name]\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nFor /INSTANCENAME, it is the instance name. Use MSSQLSERVER for default instance. For /SQLSYSADMINACCOUNTS, includes windows account or groups to provision them as sysadmin role. You may need to enclose each account with double quotes and separate each account with space.\u0026nbsp;For /SAPWD, this is the SA password. This information is required if the instance is setup as mixed authentication mode. Don't include this for windows authentication mode. If you want to change to different SQL Server instance collation (e.g. installed previously with incorrect collation), specify the new collation at /SQLCOLLATION. If this information is not supplied, the current collation will be used.\u003cbr /\u003e\n\u003cbr /\u003e\nIn this example,\u003cbr /\u003e\nSQL Server instance - default instance (mssqlserver) on current host machine (localhost)\u003cbr /\u003e\nSQL Server sysadmin account - test\\user\u003cbr /\u003e\nSQL Server setup.exe file - C:\\Program Files\\Microsoft SQL Server\\110\\Setup Bootstrap\\SQLServer2012\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003ePS C:\\Program Files\\Microsoft SQL Server\\110\\Setup Bootstrap\\SQLServer2012\u0026gt;\u003cbr /\u003e\n\u0026amp; .\\setup.exe `\u003cbr /\u003e\n\u0026gt;\u0026gt; /QUIET `\u003cbr /\u003e\n\u0026gt;\u0026gt; /ACTION\u003dREBUILDDATABASE `\u003cbr /\u003e\n\u0026gt;\u0026gt; /INSTANCENAME\u003dMSSQLSERVER `\u003cbr /\u003e\n\u0026gt;\u0026gt; /SQLSYSADMINACCOUNTS\u003dtest/user\u003cbr /\u003e\n\u0026gt;\u0026gt;\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-zuAMF9Xfl4A/Ut6V-g99IcI/AAAAAAAAC0w/5LdsnaeBiCo/s1600/rebuild+system+database.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-zuAMF9Xfl4A/Ut6V-g99IcI/AAAAAAAAC0w/5LdsnaeBiCo/s1600/rebuild+system+database.PNG\" height\u003d\"60\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nYou may see this message too during rebuild,\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-f1mfK02jqts/Ut6T0bUJuvI/AAAAAAAAC0g/D2w8BTCJ8Qc/s1600/Rebuild+process.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-f1mfK02jqts/Ut6T0bUJuvI/AAAAAAAAC0g/D2w8BTCJ8Qc/s1600/Rebuild+process.png\" height\u003d\"32\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nImmediately after the rebuild is completed. You can check the status in Summary.txt in \\110\\Setup Bootstrap\\Log\\ or \\100\\Setup Bootstrap\\Log\\ depending on SQL Server version.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-QIq56BtH6Lo/Ut6V-Tbj7mI/AAAAAAAAC0s/C4bl7T0uzcg/s1600/rebuild+log.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-QIq56BtH6Lo/Ut6V-Tbj7mI/AAAAAAAAC0s/C4bl7T0uzcg/s1600/rebuild+log.PNG\" height\u003d\"239\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nOnce verified, connect to SQL Server instance and verify if SQL Server is accessible. Change server configuration, change database file path, install service pack, restore msdb/model database where applicable.\u003cbr /\u003e\n\u003cbr /\u003e\nSide notes\u003cbr /\u003e\nIf master database still accessible when corrupted, obtain these information before rebuild to gather information as reference for post-rebuild configuration.\u003cbr /\u003e\n- Server configuration settings (e.g. sys.configurations)\u003cbr /\u003e\n- Installed version and collation (e.g. SERVERPROPERTY system function)\u003cbr /\u003e\n- Location of databases files (e.g. sys.master_files)\u003cbr /\u003e\n- Information in system databases that you need to retain.\u003cbr /\u003e\n\u003cbr /\u003e\nAfter rebuild, one option is to restore the system databases (master, msdb, model) from the backup to minimize the data loss. If master database is still accessible when it is corrupted, restoring from master database backup may often faster. Therefore, it is paramount to have a backup strategy on all databases including system database.\u003cbr /\u003e\n\u003cbr /\u003e\nYou may think restoring or rebuilding master database may not be as common compare to user database. However, corruption or disaster can occur anytime. As master database is so crucial in SQL Server environment, it is very important to get yourself familiar with the recovery step. Restoring master database could be daunting. Start practicing the master database restore and rebuild process in test environment today. When the dark force strikes, you will be all ready.\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/2714830477680869424/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2014/01/sql-server-restore-and-rebuild-master.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2714830477680869424"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2714830477680869424"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2014/01/sql-server-restore-and-rebuild-master.html","title":"SQL Server - Restore and Rebuild Master Database"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-xN9u7YO2u28/Ut6a3viN-lI/AAAAAAAAC1E/z2RvRgrU2yk/s72-c/master.jpg","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-4646320917139491215"},"published":{"$t":"2014-01-06T05:00:00.000-06:00"},"updated":{"$t":"2016-08-31T09:59:52.976-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Licensing"}],"title":{"type":"text","$t":"SQL Server Licensing - Non-Production Environment"},"content":{"type":"html","$t":"Have you wondered how SQL Server licensing work on non-production environment? Microsoft offers several options to help managing and lowering the SQL Server licensing cost for non-production.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nIn an application development life cycle (also known as SDLC), a software goes through multiple stages including designing, development, testing and acceptance before deployed to production. It is often that there are combination of sandbox, development, testing and production environment for each of application development process stages. As companies are evaluating SQL Server licensing cost due to some of the licensing model changes in SQL Server 2012 (Current release, SQL Server 2016), it is also a good time to review and understand SQL Server licensing model and its options for non-production environment.\u003cbr /\u003e\n\u003cbr /\u003e\nLet me say this first. I am not licensing expert. Please refer to your licensing advisor or representative for any licensing question.\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server licensing could be complicated and some times confusing for some people. You can find out more details about the licensing at\u0026nbsp;\u003ca href\u003d\"http://download.microsoft.com/download/7/3/C/73CAD4E0-D0B5-4BE5-AB49-D5B886A5AE00/SQL_Server_2012_Licensing_Reference_Guide.pdf\" target\u003d\"_blank\"\u003eSQL Server 2012 licensing guide\u003c/a\u003e\u0026nbsp;(Current release,\u0026nbsp;\u003ca href\u003d\"http://download.microsoft.com/download/9/C/6/9C6EB70A-8D52-48F4-9F04-08970411B7A3/SQL_Server_2016_Licensing_Guide_EN_US.pdf\" target\u003d\"_blank\"\u003eSQL Server 2016 licensing guide\u003c/a\u003e). With new core based licensing model since SQL Server 2012 (Current release, SQL Server 2016), maximum virtualization, upgrades, software assurance and other licensing concerns, it is very important to know how the new licensing affect your environment. Get detail information from Microsoft resources or consult your licensing representative for any question if you planning to install or upgrade to SQL Server 2012 (Current release, SQL Server 2016).\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server licensing cost for production varies and depends on if it is acquired through retail boxed software or the type of agreement and plans if acquired through Microsoft Volume Licensing. Microsoft offers different program for different organization type and size. For retail, you can try getting quote from\u0026nbsp;\u003ca href\u003d\"http://www.microsoftstore.com/\" target\u003d\"_blank\"\u003eMicrosoft Store\u003c/a\u003e. For volume licensing, you could use online \u003ca href\u003d\"http://mla.microsoft.com/\" target\u003d\"_blank\"\u003eMicrosoft License Advisor\u003c/a\u003e to get a quick quote.\u003cbr /\u003e\n\u003cbr /\u003e\nTake an example, SQL Server 2012 Standard Edition for 4 Cores licensing (minimum) without software assurance with Open license program is $7,172. Note that retailed box or other volume licensing programs may have other pricing and discount.\u003cbr /\u003e\n\u003cbr /\u003e\nTo help lowering the licensing cost in non-production environment, here are a few options offered by Microsoft to license SQL Server 2012 (Change for SQL Server 2016, see below).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server Evaluation Edition\u003c/b\u003e\u003cbr /\u003e\nMicrosoft offers free trial version of SQL Server 2012 (As well as SQL Server 2016) for evaluation purposes. The evaluation version is a full functional version along with all enterprise edition features with the evaluation period for 180 days.\u003cbr /\u003e\n\u003cbr /\u003e\nThis option is great especially for database administrator who want to test and evaluate the new version. It may not be ideal for developer to use it for their software development purpose as the database becomes inaccessible after it expires.\u003cbr /\u003e\n\u003cbr /\u003e\nTo download the SQL Server 2016 free evaluation version. Visit this\u0026nbsp;\u003ca href\u003d\"https://www.microsoft.com/en-us/evalcenter/evaluate-sql-server-2016\" target\u003d\"_blank\"\u003epage\u003c/a\u003e. Or you can try the SQL Server 2016 Developer edition (Free as well! see below).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server Developer Edition\u003c/b\u003e\u003cbr /\u003e\nDeveloper edition consists of all enterprise edition features and capabilities. This edition is licensed under 'per user' developer tools model. One developer license is required for each person to access the software. Each licensed user could install multiple copies in different machines for non-production purposes provided all users access to the software are licensed under this model.\u003cbr /\u003e\n\u003cbr /\u003e\nThis option is great for development, testing or demo purposes as there is no expiration of the software and the cost of this edition is very cheap compare to the standard/enterprise edition. Quick search of the developer edition show the software cost about $45 - $60 (\u003ca href\u003d\"http://www.amazon.com/SQL-Server-Developer-Edition-2012/dp/B007RFXQAM\" target\u003d\"_blank\"\u003eAmazon link\u003c/a\u003e)\u003cbr /\u003e\n\u003cbr /\u003e\nUpdate: Microsoft announced that the SQL Server 2016 Developer edition is free! Visit this\u0026nbsp;\u003ca href\u003d\"https://www.microsoft.com/en-us/cloud-platform/sql-server-editions-developers\" target\u003d\"_blank\"\u003eMicrosoft page\u0026nbsp;\u003c/a\u003efor more information and download the software as well.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eMSDN Subscription\u003c/b\u003e\u003cbr /\u003e\nMicrosoft also offers licensing for non-production environment through MSDN subscription (Microsoft Developer Network). MSDN subscriptions allows software developer and administrator to access new and earlier version of Microsoft products including SQL Server. This option utilize 'per user' licensing model. It allows subscriber to access new and previous version of software, and install and use the software in different machines provided that all users access to the software have appropriate license. That's mean developer or administrator could choose to download the appropriate edition (e.g. standard edition) to test its limited features, which could not be done in evaluation or developer edition as it provides full enterprise edition features.\u003cbr /\u003e\n\u003cbr /\u003e\nThe MSDN subscription also gives monthly credit for each subscriber to use any Windows Azure services for development and testing, as well as discounted rate for certain Azure services (more info \u003ca href\u003d\"http://www.windowsazure.com/en-us/pricing/member-offers/msdn-benefits-details/\" target\u003d\"_blank\"\u003ehere\u003c/a\u003e).\u003cbr /\u003e\n\u003cbr /\u003e\nMSDN Subscription could be purchased directly with Microsoft, reseller or through Microsoft Volume Licensing program (Download the \u003ca href\u003d\"http://download.microsoft.com/download/a/7/0/a70853c1-a783-4d48-a7ad-f404abdb1e7d/Microsoft_Volume_Licensing_Reference_Guide.pdf\" target\u003d\"_blank\"\u003ereference guide\u003c/a\u003e).\u003cbr /\u003e\n\u003cbr /\u003e\nHere are some \u003ca href\u003d\"http://www.visualstudio.com/products/how-to-buy-vs\" target\u003d\"_blank\"\u003eMSDN subscription pricing\u003c/a\u003e if purchased from Microsoft directly (at the time of this post).\u003cbr /\u003e\n\u003cbr /\u003e\nUpdate: Microsoft simplified the licensing and the latest licensing pricing as of August 31, 2016.\u003cbr /\u003e\n\u003cbr /\u003e\nVisual Studio Enterprise with MSDN - $5,999, renew $2,569\u003cbr /\u003e\nVisual Studio Professional with MSDN - $1,199, Renew $799\u003cbr /\u003e\n\u003cbr /\u003e\nIn general, production environment is where end users and application use other than user acceptance test. Any environment that fit in any of the scenario below is also considered as production,\u003cbr /\u003e\n\u003cbr /\u003e\n- Environment that connect to production database\u003cbr /\u003e\n- Environment use for backup or disaster recovery purposes for production environment\u003cbr /\u003e\n- Environment that is used for production for at least some times (e.g. rotate into production during peak time)\u003cbr /\u003e\n\u003cbr /\u003e\nNon-production environment is usually used for software designing, development and testing. The licensing options listed above show different ways to license user in these environment. As described, every user is required to be licensed appropriately in order to install and use the software. However, there are scenarios where unlicensed users can use the software. One of them is acceptance testing. During the user acceptance test (UAT), end users (usually limited to a few members) review and conduct test on software to determine if requirement and specification are met. The end users who don't have MSDN subscription may access the software for this purpose. More detail can be found in \u003ca href\u003d\"http://www.microsoft.com/en-us/download/confirmation.aspx?id\u003d13350\" target\u003d\"_blank\"\u003eVisual Studio and MSDN Licensing White Paper\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nHope this post help in your research of SQL Server 2012 \u0026nbsp;(Current release, SQL Server 2016) licensing in non-production environment as well as resources for additional details from the links provided."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/4646320917139491215/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2014/01/sql-server-licensing-test-environment.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/4646320917139491215"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/4646320917139491215"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2014/01/sql-server-licensing-test-environment.html","title":"SQL Server Licensing - Non-Production Environment"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"thr$total":{"$t":"1"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-8395492374495154117"},"published":{"$t":"2013-12-17T00:00:00.000-06:00"},"updated":{"$t":"2013-12-17T07:40:10.022-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Configuration"}],"title":{"type":"text","$t":"Windows Firewall to Remote SQL Server Configuration Manager (SSCM) "},"content":{"type":"html","$t":"Previously we discussed about using computer management console to remotely configure SQL Server Configuration Manager (SSCM) in this \u003ca href\u003d\"http://www.travisgan.com/2013/03/sql-server-configuration-manager-sscm.html\" target\u003d\"\"\u003epost\u003c/a\u003e. If your environment has firewall turned on, there are additional firewall configuration need to be made to allow it to work.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eFirst bring up the computer management console by running\u0026nbsp;\u003cb\u003ecompmgmt.msc\u003c/b\u003e, or\u003cbr /\u003e\nStart-\u0026gt;All Programs-\u0026gt;Administrative Tools-\u0026gt;Computer Management\u003cbr /\u003e\n\u003cbr /\u003e\nRight click on the \u003cb\u003eComputer Management\u003c/b\u003e node, select Connect to another computer. Provide the remote computer name with SQL Server installed.\u003cbr /\u003e\n\u003cbr /\u003e\nOnce the connection is successfully connected, expand the \u003cb\u003eServices and Applications\u003c/b\u003e node.\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server Configuration Manager (SSCM) is required to be installed on the local server/workstation. If not, you won't see the SQL Server Configuration Manager under the Services and Applications node. SSCM can be installed through the 'Client Tools Connectivity' during the SQL Server setup, or download and install SQL Server Management Studio Express (\u003ca href\u003d\"http://www.microsoft.com/en-us/download/details.aspx?id\u003d30438\" target\u003d\"_blank\"\u003eSQL Server 2008 R2 SP2 Express\u003c/a\u003e, \u003ca href\u003d\"http://www.microsoft.com/en-us/download/details.aspx?id\u003d35579\" target\u003d\"_blank\"\u003eSQL Server 2012 SP1 Express\u003c/a\u003e)\u003cbr /\u003e\n\u003cbr /\u003e\nYou may see multiple SSCM nodes if you have installed multiple versions (e.g. SQL Server 2008 R2, SQL Server 2012)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-1ePm4oWOj8Y/UrBTJ9TXjrI/AAAAAAAACrY/aeVIt9Dur-o/s1600/compmgmt.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-1ePm4oWOj8Y/UrBTJ9TXjrI/AAAAAAAACrY/aeVIt9Dur-o/s1600/compmgmt.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nWhen you click on the SQL Server Services under the SSCM, you should see a list of SQL Server services (e.g. SQL Server Browser, SQL Server, SQL Server Agent, etc).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\nIf you get a message '\u003cb\u003eRequesting data from WMI Provider\u003c/b\u003e' or '\u003cb\u003eThere are no items to show in this view\u003c/b\u003e', you may need to enable one firewall rule.\u003cbr /\u003e\n\u003cbr /\u003e\nOn the local server/workstation, run \u003cb\u003eWF.msc\u003c/b\u003e or\u003cbr /\u003e\nStart-\u0026gt;All Programs-\u0026gt;Administrative Tools-\u0026gt;Windows Firewall with Advanced Security\u003cbr /\u003e\n\u003cbr /\u003e\nSelect Inbound Rules on the left pane, scroll down and find 'Windows Management Instrumentation (Async-In). Right click and enable that rule.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-IQDq6Mq-VsI/UquDvPq0RyI/AAAAAAAACrE/5GXvFpXwo6g/s1600/RemoteSSCM.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"63\" src\u003d\"http://1.bp.blogspot.com/-IQDq6Mq-VsI/UquDvPq0RyI/AAAAAAAACrE/5GXvFpXwo6g/s1600/RemoteSSCM.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nClose the Computer Management console and reconnect to the remote server again. If all other firewall rule is intact, you should be able to view all the SQL Server services.\u003cbr /\u003e\n\u003cbr /\u003e\nSide note, to manage disk remotely, visit this \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/dd759223.aspx\" target\u003d\"_blank\"\u003earticle\u003c/a\u003e\u0026nbsp;for more information or enable the following firewall inbound rules on remote servers,\u003cbr /\u003e\n- Remote Volume Management - Virtual Disk Service (RPC)\u003cbr /\u003e\n- Remote Volume Management - Virtual Disk Service Loader (RPC)\u003cbr /\u003e\n- Remote Volume Management (RPC-EPMAP)\u003cbr /\u003e\n\u003cbr /\u003e\nTo allow other remote management, enable remote management on the remote server to enable additional firewall rules. Visit this \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/dd759202.aspx\" target\u003d\"_blank\"\u003earticle\u003c/a\u003e for more information.\u003cbr /\u003e\n\u003cbr /\u003e\nNote: After making the changes, verify the rules are enabled in Windows Firewall with Advanced Security console to make sure it is not superseded by Group Policy settings."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/8395492374495154117/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/12/windows-firewall-to-remote-sql-server.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/8395492374495154117"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/8395492374495154117"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/12/windows-firewall-to-remote-sql-server.html","title":"Windows Firewall to Remote SQL Server Configuration Manager (SSCM) "}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://4.bp.blogspot.com/-1ePm4oWOj8Y/UrBTJ9TXjrI/AAAAAAAACrY/aeVIt9Dur-o/s72-c/compmgmt.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-6720806688943835100"},"published":{"$t":"2013-12-09T17:22:00.003-06:00"},"updated":{"$t":"2013-12-09T17:31:32.003-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Self Learning"}],"title":{"type":"text","$t":"NoSQL - MongoDB Free Courses"},"content":{"type":"html","$t":"Have you been hearing all the buzz about NoSQL? Have you been tasked to research or provide assistance on some NoSQL database system? Are you interested in learning more of NoSQL/MongoDB? If yes, read on.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eNoSQL databases provide storage and data retrieval mechanism differs from traditional relational database. It generally strikes for design simplicity, horizontal scaling and significant performance benefit over certain database operations.\u003cbr /\u003e\n\u003cbr /\u003e\nMongoDB,\u0026nbsp;one of the most popular NoSQL database system, has been adopted by many major companies like Craiglist, Intuit, Ebay, MTV Networks, Foursquare and many others for their websites and services. MongoDB utilizes document-oriented database implementation with JSON-like documents (BSON). Some of its main features include, load balancing, file storage, indexing and replication.\u003cbr /\u003e\n\u003cbr /\u003e\nIf you are interested in learning of MongoDB database, there are free courses available starting today (MongDB for DBA) by one of the original author of the MongoDB. There are courses for developers too! Check them out at MongoDB University.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cimg border\u003d\"0\" height\u003d\"50\" src\u003d\"http://4.bp.blogspot.com/-2SHo89yxivM/UqZP1Rf-yPI/AAAAAAAACq0/OxZhmZKP-i4/s200/MongoDB_University.png\" width\u003d\"200\" /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThere are courses for DBA and developer. Please note that each course start on a different date and schedule. Click the link below the subject you interested.\u003cbr /\u003e\n\u003cbr /\u003e\nMongoDB for DBAs - \u003ca href\u003d\"https://education.mongodb.com/courses/10gen/M102/2013_December/about\" target\u003d\"_blank\"\u003eMore Info\u003c/a\u003e\u003cbr /\u003e\nMongoDB for Python Developer - \u003ca href\u003d\"https://education.mongodb.com/courses/10gen/M101P/2013_November/about\" target\u003d\"_blank\"\u003eMore Info\u003c/a\u003e\u003cbr /\u003e\nMongoDB for Node.Js Developer - \u003ca href\u003d\"https://education.mongodb.com/courses/10gen/M101JS/2014_January/about\" target\u003d\"_blank\"\u003eMore Info\u003c/a\u003e\u003cbr /\u003e\nMongoDB for Java Deveoper - \u003ca href\u003d\"https://education.mongodb.com/courses/10gen/M101J/2014_January/about\" target\u003d\"_blank\"\u003eMore Info\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nHappy learning!"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/6720806688943835100/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/12/nosql-mongodb-free-courses.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/6720806688943835100"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/6720806688943835100"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/12/nosql-mongodb-free-courses.html","title":"NoSQL - MongoDB Free Courses"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://4.bp.blogspot.com/-2SHo89yxivM/UqZP1Rf-yPI/AAAAAAAACq0/OxZhmZKP-i4/s72-c/MongoDB_University.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-4968182754677724844"},"published":{"$t":"2013-12-02T05:00:00.000-06:00"},"updated":{"$t":"2013-12-02T07:37:09.585-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Security"}],"title":{"type":"text","$t":"SQL Security Delegation With Grant Option and db_securityadmin"},"content":{"type":"html","$t":"\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-OoyrP9gTzpM/UpyMBOS9iXI/AAAAAAAACqk/VyliRVGfYnE/s1600/permission_delegation.jpg\" imageanchor\u003d\"1\" style\u003d\"clear: left; float: left; margin-bottom: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"75\" src\u003d\"http://4.bp.blogspot.com/-OoyrP9gTzpM/UpyMBOS9iXI/AAAAAAAACqk/VyliRVGfYnE/s200/permission_delegation.jpg\" width\u003d\"60\" /\u003e\u003c/a\u003e\u003c/div\u003e\nIf you are a database administrator and intend to delegate some database security permission tasks to another user, there are a few ways to achieve this in SQL Server. There are fixed database roles like db_securityadmin and With Grant Option permission method. It is important to understand how it works and watch out some of their interesting behaviors.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\ndb_securityadmin is a fixed database role created by SQL Server. Members of this role can modify role membership and manage permissions for all securables within the database it assigned with the role.\u003cbr /\u003e\n\u003cbr /\u003e\nWith Grant Option permission gives a database principal the ability to grant a specific permission to other database principals on a specific securable. This method allows granular permission assignment without broad security permission like db_securityadmin database role.\u003cbr /\u003e\n\u003cbr /\u003e\nHowever, there a few interesting behaviors to watch out to prevent surprises.\u003cbr /\u003e\n\u003cbr /\u003e\nLet's see some examples. By default, the database role are owned by dbo user. When a member of db_securityadmin grants permission on a securable to a principal, the grantor of the permission 'usually' is assigned as dbo. More details later.\u003cbr /\u003e\n\u003cbr /\u003e\nFirst, log in with the account which is a member of sysadmin role. In the example below, the sysadmin account is used to execute query unless when it impersonates other principal.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE DATABASE TEST;\nGO\n\nUSE TEST;\nGO\n\nCREATE TABLE dbo.tbl1 (col1 tinyint DEFAULT 1);\nINSERT INTO dbo.tbl1 VALUES (DEFAULT);\nGO\n\n--db_securityadmin \nCREATE USER UserSecurityAdmin WITHOUT LOGIN;\nEXEC sp_addrolemember db_securityadmin, UserSecurityAdmin;\nEXEC sp_addrolemember db_securityadmin, UserSecurityAdmin;\n\n--db_securityadmin and with grant option\nCREATE USER UserSecurityAdminGrantOption WITHOUT LOGIN;\nEXEC sp_addrolemember db_securityadmin, UserSecurityAdminGrantOption;\nGRANT SELECT ON dbo.tbl1 TO UserSecurityAdminGrantOption WITH GRANT OPTION;\n\n--with grant option\nCREATE USER UserGrantOption WITHOUT LOGIN;\nGRANT SELECT ON dbo.tbl1 TO UserGrantOption WITH GRANT OPTION;\n\n--user\nCREATE USER TestUser WITHOUT LOGIN;\nCREATE USER TestUser2 WITHOUT LOGIN;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nNext, we grant TestUser permission on dbo.tbl1 table by each principal.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin';\nGRANT SELECT ON dbo.tbl1 TO TestUser;\nREVERT;\n\nEXECUTE AS USER \u003d 'UserGrantOption';\nGRANT SELECT ON dbo.tbl1 TO TestUser;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nRun the script below to verify the permission. This script will be used to verify permission throughout this post.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eSELECT \n  USER_NAME(p.grantee_principal_id) AS [user],\n  USER_NAME(p.grantor_principal_id) AS [grantor],\n  p.[state_desc],\n  p.[permission_name],\n  p.class_desc,\n  OBJECT_SCHEMA_NAME(p.major_id) + '.' + OBJECT_NAME(p.major_id) AS [securable]\nFROM sys.database_permissions p\nWHERE p.[permission_name] \u0026lt;\u0026gt; 'CONNECT' AND\n      p.grantee_principal_id IN \n      (\n        DATABASE_PRINCIPAL_ID('UserSecurityAdmin'),\n        DATABASE_PRINCIPAL_ID('UserSecurityAdminGrantOption'),\n        DATABASE_PRINCIPAL_ID('UserGrantOption'),\n        DATABASE_PRINCIPAL_ID('db_GrantOption'),\n        DATABASE_PRINCIPAL_ID('memberGrantOption'),\n        DATABASE_PRINCIPAL_ID('TestUser'),\n        DATABASE_PRINCIPAL_ID('TestUser2')\n      ) \nORDER BY [user], [state_desc];\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-LGglGs-ZNaU/Uppt4vpnWrI/AAAAAAAACqM/QwSvdkpFz6w/s1600/executeas_grant.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"50\" src\u003d\"http://4.bp.blogspot.com/-LGglGs-ZNaU/Uppt4vpnWrI/AAAAAAAACqM/QwSvdkpFz6w/s400/executeas_grant.png\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNotice that TestUser is granted with SELECT permission with different grantor? One with dbo as grantor and another with UserGrantOption. When permission is granted by member of db_securityadmin database role, it is granted with dbo. The permission granted by UserGrantOption has the user as the permission grantor.\u003cbr /\u003e\n\u003cbr /\u003e\nNow grant permission with UserSecurityAdminGrantOption with and without the 'As' option.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdminGrantOption';\nGRANT SELECT ON dbo.tbl1 TO TestUser;\nGRANT SELECT ON dbo.tbl1 TO TestUser AS UserSecurityAdminGrantOption;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-lSpkUFoYJEY/UpkeCdqo7uI/AAAAAAAACo8/P3VpVlGJCtA/s1600/deny.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"55\" src\u003d\"http://1.bp.blogspot.com/-lSpkUFoYJEY/UpkeCdqo7uI/AAAAAAAACo8/P3VpVlGJCtA/s400/deny.png\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNotice that there is a new entry with UserSecurityAdminGrantOption as grantor. It is important to be aware that permission granted WITH GRANT OPTION or using the 'As' option resulted the user assigned as grantor. is from the permission granted with 'As' option. The previous example shows us that permission granted with db_securityadmin (without 'As' option) is assigned with dbo as grantor. Since there is already a similar SELECT permission with dbo as grantor, there are now three permission for TestUser with its respective grantor.\u003cbr /\u003e\n\u003cbr /\u003e\nUserSecurityAdmin is member of db_securityadmin database role but not with the WITH GRANT OPTION like UserSecurityAdminGrantOption. If it try to use the 'As' option,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin';\nGRANT SELECT ON dbo.tbl1 TO TestUser AS UserSecurityAdmin;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nIt failed with this error\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eMsg 15151, Level 16, State 1, Line 1\u003c/span\u003e\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eCannot find the object 'tbl1', because it does not exist or you do not have permission.\u003c/span\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nWe know that UserSecurityAdmin is a member of db_securityadmin, it should have the capability/permission to modify any permission on any principal. It appears that either the 'AS' option does not consider the inherit security permission from the fixed database role or 'As' option could be only used for user explicitly granted WITH GRANT OPTION permission.\u003cbr /\u003e\n\u003cbr /\u003e\nAttempt to grant WITH GRANT OPTION to db_securityadmin fixed database role returns this error.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eMsg 4617, Level 16, State 1, Line 1\u003c/span\u003e\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eCannot grant, deny or revoke permissions to or from special roles.\u003c/span\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nNow we see that a user could be granted multiple times with different grantor on a similar permission. That mean if UserSecurityAdmin revoke the SELECT permission from TestUser, TestUser is still able to select from the table since it still granted with SELECT permission from other grantor.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin';\nREVOKE SELECT ON dbo.tbl1 FROM TestUser;\nREVERT;\n\nEXECUTE AS USER \u003d 'TestUser';\nSELECT * FROM dbo.tbl1;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nTestUser still has the permission to SELECT from dbo.tbl1 table. In order to prevent TestUser from selecting from the table, UserSecurityAdmin could issue a DENY statement.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin';\nDENY SELECT ON dbo.tbl1 TO TestUser;\nREVERT;\n\nEXECUTE AS USER \u003d 'TestUser';\nSELECT * FROM dbo.tbl1;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eMsg 229, Level 14, State 5, Line 2\u003c/span\u003e\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eThe SELECT permission was denied on the object 'tbl1', database 'TEST', schema 'dbo'.\n\u003c/span\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nRemember that there are multiple SELECT permissions have been granted to TestUser? However, DENY permission always take precedence.\n\nThe other way to remove the TestUser permission to the table is to revoke all its GRANT SELECT permissions. Here is the part to watch out. In order to revoke the permission, the principal who is the grantor of the permission is required to be used to execute the statement to revoke the permission. Here is the example. Let's use the UserSecurityAdmin who is a member of db_securityadmin role to revoke the permission.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin';\nREVOKE SELECT ON dbo.tbl1 TO TestUser;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nIf we use another account with db_securityadmin or member of sysadmin server role to revoke the permission,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Grant permission as UserSecurityAdmin\nEXECUTE AS USER \u003d 'UserSecurityAdmin';\nDENY SELECT ON dbo.tbl1 TO TestUser;\nREVERT;\n\n--Revoke account with sysadmin account\nREVOKE SELECT ON dbo.tbl1 TO TestUser;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-IundoFmrfE0/UpkfGreL9yI/AAAAAAAACpI/7yVttP7vYKs/s1600/revoke.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"38\" src\u003d\"http://3.bp.blogspot.com/-IundoFmrfE0/UpkfGreL9yI/AAAAAAAACpI/7yVttP7vYKs/s320/revoke.png\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe account that is executing this statement is the member of sysadmin role, which by default as dbo user. The statement above only revoke the DENY permission that is granted by UserSecurityAdmin (grantor dbo) on the table from TestUser. It does not revoke permission that was granted by other users. \n\u003cbr /\u003e\n\u003cbr /\u003e\nOne way to revoke the permission granted by UserGrantOption is using the 'AS' option, or execute as UserGrantOption and revoke the permission. In order to grant permission as other principal, the principal executing the query requires IMPERSONATE permission on the other principal. Member of db_securityadmin inherit this permission on all principals of the database.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Execute as UserGrantOption\nEXECUTE AS USER \u003d 'UserGrantOption';\nREVOKE SELECT ON dbo.tbl1 FROM TestUser;\nREVERT;\n\n--Execute as db_securityadmin with AS option\nEXECUTE AS USER \u003d 'UserSecurityAdmin ';\nREVOKE SELECT ON dbo.tbl1 FROM TestUser AS UserGrantOption;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nYou may think we could log in with the grantor account and revoke the permission. However, it may not work that way. Take UserSecurityAdminGrantOption as an example. Since this account is a member of db_securityadmin, the grantor is assigned as 'dbo' if the permission is granted without the Grant 'AS' option. If the 'AS' option was used to grant the permission, UserSecurityAdminGrantOption is set as the grantor. That means, if we are going to revoke the permission that was previously granted with the 'AS' option, we need to use the 'AS' option to revoke the permission.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdminGrantOption';\n--This does not work\nREVOKE SELECT ON dbo.tbl1 FROM TestUser;\n\n--This work\nREVOKE SELECT ON dbo.tbl1 FROM TestUser AS UserSecurityAdminGrantOption;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nThere is another way to revoke permission previously granted with the 'AS' option. The REVOKE statement has two options,\u003cbr /\u003e\n1) GRANT OPTION FOR\u003cbr /\u003e\n2) CASCADE\u003cbr /\u003e\n\u003cbr /\u003e\nWhen GRANT OPTION FOR option is used, it has to be used together with CASCADE option. This revokes the specific permission previously granted to other principals by this principal. To better illustrate the use of this option, here is the example.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Grant SELECT for both TestUser, TestUser2\n--execute as UserGrantOption\nEXECUTE AS USER \u003d 'UserGrantOption'; \nGRANT SELECT ON dbo.tbl1 TO TestUser, TestUser2;\nREVERT;\n\n--Or execute as member of db_securityadmin and use AS option\nEXECUTE AS USER \u003d 'UserSecurityAdmin'; \nGRANT SELECT ON dbo.tbl1 TO TestUser, TestUser2 AS UserGrantOption;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-eZsfMa8PV5I/UpkgQ6DO9xI/AAAAAAAACpQ/kAgUoFVqFHA/s1600/grant_two.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"50\" src\u003d\"http://4.bp.blogspot.com/-eZsfMa8PV5I/UpkgQ6DO9xI/AAAAAAAACpQ/kAgUoFVqFHA/s400/grant_two.png\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIf we try to revoke with GRANT OPTION FOR with CASCADE option executed as UserGrantOption,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Pay attention that the revoke is on UserGrantOption, not TestUser\n--execute as UserGrantOption\nEXECUTE AS USER \u003d 'UserGrantOption'; \nREVOKE GRANT OPTION FOR SELECT ON dbo.tbl1 FROM UserGrantOption CASCADE;\nREVERT;\n\u003c/pre\u003e\n\u003cbr /\u003e\nIt returns an error. \n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eCannot grant, deny, or revoke permissions to sa, dbo, entity owner, information_schema, sys, or yourself.\n\u003c/span\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server does not allow principal to change its own permission. In order to achieve that, use another principal that has the permission, like member of db_securityadmin.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Execute as member of db_securityadmin and use AS option\nEXECUTE AS USER \u003d 'UserSecurityAdmin'; \nREVOKE GRANT OPTION FOR SELECT ON dbo.tbl1 FROM UserGrantOption CASCADE;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-zWNRvKNyh90/Upkg944BK2I/AAAAAAAACpg/TVul1yd7lyE/s1600/grantoptionfor_cascade.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"35\" src\u003d\"http://1.bp.blogspot.com/-zWNRvKNyh90/Upkg944BK2I/AAAAAAAACpg/TVul1yd7lyE/s400/grantoptionfor_cascade.png\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNotice that SELECT permission for both TestUser and TestUser2 have been revoked from the dbo.tbl1 table. However, UserGrantOption itself still have the SELECT permission but not GRANT SELECT permission.\u003cbr /\u003e\n\u003cbr /\u003e\nIf the intention is to revoke all the SELECT permission from UserGrantOption and the permission it granted, use CASCADE without GRANT OPTION FOR option.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin'; \n--Grant WITH GRANT OPTION permission back to UserGrantOption \nGRANT SELECT ON dbo.tbl1 TO UserGrantOption WITH GRANT OPTION;\n\n--Grant SELECT permission to users\nGRANT SELECT ON dbo.tbl1 TO TestUser, TestUser2 AS UserGrantOption;\n\n--Revoke SELECT permission on UserGrantOption and other users granted by it\nREVOKE SELECT ON dbo.tbl1 FROM UserGrantOption CASCADE;\nREVERT;\nGO\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\nIs it possible to remove the SELECT permission on UserGrantOption without removing the SELECT permission it previously granted to other principals? The answer is no.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eEXECUTE AS USER \u003d 'UserSecurityAdmin'; \n--Grant UserGrantOption the ability to grant permission\nGRANT SELECT ON dbo.tbl1 TO UserGrantOption WITH GRANT OPTION;\n\n--Grant SELECT permission to users\nGRANT SELECT ON dbo.tbl1 TO TestUser, TestUser2 AS UserGrantOption;\n\n--Revoke SELECT permission on UserGrantOption\nREVOKE SELECT ON dbo.tbl1 FROM UserGrantOption;\nREVERT;\nGO\u003c/pre\u003e\n\u003cbr /\u003e\nThis error is returned.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eMsg 4611, Level 16, State 1, Line 1\nTo revoke or deny grantable privileges, specify the CASCADE option.\nThis brings up a concern.\u0026nbsp;\u003c/span\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nThis bring up a potential problem. What if an user who has been delegated to grant permission and has granted permission to other principals, decided to leave the company? If you try to drop the user.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDROP USER UserGrantOption;\nGO\u003c/pre\u003e\n\u003cbr /\u003e\nYou get this error.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eMsg 15284, Level 16, State 1, Line 1\nThe database principal has granted or denied permissions to objects in the database and cannot be dropped.\n\u003c/span\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nIn order to drop the user, all the permission (GRANT or DENY) granted by this user required to be revoked before the user can be dropped. Now, dropping a user suddenly affect other users' permissions. \n\u003cbr /\u003e\n\u003cbr /\u003e\nBack to topic, db_securityadmin and WITH GRANT OPTION could be used to delegate user to grant permission. If db_securityadmin method is used, the grantor of the permission is dbo, not to the user granting the permission. This allow dropping the user without affecting other user permission (Note that You can't drop dbo user).\nHowever, as we have seen this is not as simple for WITH GRANT OPTION as the grantor is assigned to the user granting the permission.\n\u003cbr /\u003e\n\u003cbr /\u003e\nIf granular permission delegation is required or desired in your environment, and you want to avoid this concern, there are a few ways.\u003cbr /\u003e\n\u003cbr /\u003e\n1) Use another user to grant similar permissions to all affected principals. This increase security maintenance cost and may lead to accidental mistake.\u003cbr /\u003e\n\u003cbr /\u003e\n2) Use a specified Windows group. Create a user (group) and maps it to this Windows group and grant permission with this user. This allow permission grantor ties to a group instead of a specific user. The member of the group is managed at the Active directory. However, the user can't grant the permission directly as the WITH GRANT OPTION is assigned to the group. \n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--If WindowUserGrantOption is member of WindowsGrantOptionGroup Windows group.\n--Grant windows group WITH GRANT OPTION\nGRANT SELECT ON dbo.tbl1 TO WindowsGrantOptionGroup WITH GRANT OPTION;\n\n--Won't work\nEXECUTE AS USER \u003d 'WindowUserGrantOption';\nGRANT SELECT ON dbo.tbl1 TO TestUser;\nREVERT;\n\n--Work\nEXECUTE AS USER \u003d 'WindowUserGrantOption';\nGRANT SELECT ON dbo.tbl1 TO TestUser AS WindowsGrantOptionGroup;\nREVERT;\n\u003c/pre\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eGO\u003c/pre\u003e\n\u003cbr /\u003e\nThe grantor of the permission will be assigned to WindowsGrantOptionGroup.\u003cbr /\u003e\n\u003cbr /\u003e\n3) Similar to Windows group, use user defined database role. Instead of granting permission as the user, grant permission as the database role.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Create user database role \n--The grant option assigned to the role, not the user\nCREATE ROLE db_GrantOption;\nGRANT SELECT ON dbo.tbl1 TO db_GrantOption WITH GRANT OPTION;\n\n--Add user as member of the role\nCREATE USER memberGrantOption WITHOUT LOGIN;\nEXEC sp_addrolemember db_GrantOption, memberGrantOption;\n\n--Grant TestUser SELECT permission as database role, not the user itself\nEXECUTE AS USER \u003d 'memberGrantOption';\nGRANT SELECT ON dbo.tbl1 TO TestUser AS db_GrantOption;\nREVERT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-bEWpdJfWekE/UpkmY4rvvhI/AAAAAAAACp8/DoImr8F7cAg/s1600/role_grant.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"35\" src\u003d\"http://2.bp.blogspot.com/-bEWpdJfWekE/UpkmY4rvvhI/AAAAAAAACp8/DoImr8F7cAg/s400/role_grant.png\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNotice that the TestUser permission grantor is assigned to db_GrantOption database role. Dropping the user could be done without affecting the other users' permission that was previously granted as the grantor of the permission is assigned to the database role.\u003cbr /\u003e\n\u003cbr /\u003e\nTo wrap up, delegating permission task with db_securityadmin is more common from my experience. It avoids the complication of the delegated user leaving the company as permission grantor is assigned dbo rather than to specific user. However it may not be suitable for environment required granular permission delegation. WITH GRANT OPTION provide an alternative to delegate security task at a much granular level. However, since the grantor of the permission is tied to specific user, it is important to understand how it works and plan accordingly to prevent unforeseen consequences."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/4968182754677724844/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/12/sql-security-delegation-with-grant.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/4968182754677724844"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/4968182754677724844"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/12/sql-security-delegation-with-grant.html","title":"SQL Security Delegation With Grant Option and db_securityadmin"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://4.bp.blogspot.com/-OoyrP9gTzpM/UpyMBOS9iXI/AAAAAAAACqk/VyliRVGfYnE/s72-c/permission_delegation.jpg","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-37407984895984280"},"published":{"$t":"2013-11-21T00:00:00.001-06:00"},"updated":{"$t":"2013-11-21T10:45:13.461-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"SQL DMF sys.dm_os_volume_stats not returning result"},"content":{"type":"html","$t":"If you familiar with this dynamic management function (DMF) and have been using it, but suddenly this DMF returns no result on some or all of the referring database files, this post discusses discusses the root cause and solution that may help you in your troubleshooting.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nSQL Server introduces new dynamic management function (DMF) sys.dm_os_volume_stats since SQL Server 2008 R2. This DMF could be used to returns several attributes of physical disk drive or available free disk space information about the directory.\n\u003cbr /\u003e\nHere is an example of using this DMF,\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eSELECT \n m.name, \n m.physical_name,\n m.size / 128.0 AS file_size_MB,\n v.volume_mount_point AS drive,\n v.total_bytes / 1048576 AS total_disk_MB,\n v.available_bytes / 1048576 AS free_disk_MB\nFROM sys.master_files m\nOUTER APPLY sys.dm_os_volume_stats (m.[database_id], m.[file_id]) v\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-lNVJkouAOFw/Uo4gqGAL-rI/AAAAAAAACnM/DG35yIJ73E8/s1600/dm_os_volume_stats_works.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"83\" src\u003d\"http://2.bp.blogspot.com/-lNVJkouAOFw/Uo4gqGAL-rI/AAAAAAAACnM/DG35yIJ73E8/s400/dm_os_volume_stats_works.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe query shows the drive, total disk space, free disk space from the sys.dm_os_volume_stats DMF. Great. That's what is expected.\u003cbr /\u003e\n\u003cbr /\u003e\nNote that the user database 'Test' is purposely move to a different drive, D:\\ in this case for demo purpose.\u003cbr /\u003e\n\u003cbr /\u003e\nNow, the problem is when we get this as a result,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-hB_S2vUv0zA/Uo4g1ptNhCI/AAAAAAAACnU/QZsrwVV5Ko0/s1600/dm_os_volume_stats_notwork.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"83\" src\u003d\"http://2.bp.blogspot.com/-hB_S2vUv0zA/Uo4g1ptNhCI/AAAAAAAACnU/QZsrwVV5Ko0/s400/dm_os_volume_stats_notwork.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe DMF returns NULL for Test database files. Please note that the query is using \u003cb\u003eOUTER APPLY\u003c/b\u003e. If you are using \u003cb\u003eCROSS APPLY\u003c/b\u003e, it does not return the Test database files rows.\u003cbr /\u003e\n\u003cbr /\u003e\nWhat happens?\u003cbr /\u003e\n\u003cbr /\u003e\n'Luckily', the Windows application error log shows this error,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eThe operating system returned the error '5(Access is denied.)' while attempting 'GetVolumeInformation' on '\\\\?\\Volume{f470f87e-52b3-11e3-93ff-806e6f6e6963}\\' at 'storagedmv.cpp'(308).\u003c/code\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe reason I said 'luckily' is because at least there is some sort of an error giving you indication what might be wrong. Sometimes we are not as lucky like the DBCC CHECKDB internal database snapshot failure.\u003cbr /\u003e\n\u003cbr /\u003e\nIt appears that that is access issue to the volume. If you referring to volume_id column in the first screen shot, that is the D: drive where test databases are located at.\u003cbr /\u003e\n\u003cbr /\u003e\nIt appears to be the service account, in this case NT SERVICE\\MSSQLSERVER, does not have the access to the root volume (D: drive). It was working before either because the either one of the user/group listed below is granted with at least read permission to the root volume,\u003cbr /\u003e\n\u003cbr /\u003e\n1) SQL Server Service Account\u003cbr /\u003e\n2) Everyone\u003cbr /\u003e\n3) NT Authority\\Authenticated Users\u003cbr /\u003e\n4) Users (e.g. TestServer\\Users). This group usually includes NT Authority\\Authenticated Users\u003cbr /\u003e\n\u003cbr /\u003e\nBasically the idea is the SQL Server service account needs to has at least read access to the root volume in order for the sys.dm_os_volume_stats to work in addition to SQL Server login security with VIEW SERVER STATE permission.\u003cbr /\u003e\n\u003cbr /\u003e\nBack to the example above. You may already guess that the query still returns system database drive information because it is locating on C: drive, in this case there is local server users group granted with at least read permission to the C:. If you remove all the above group from the root volume (C:), the DMF will not return any result.\u003cbr /\u003e\n\u003cbr /\u003e\nIs this the reason on DBCC CHECKDB internal database snapshot failure? Read more details \u003ca href\u003d\"http://www.travisgan.com/2013/11/dbcc-checkdb-database-snapshot-failure.html\"\u003ehere\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nThis is tested on SQL Server 2008 R2 and SQL Server 2012 on Windows 2008 R2 and Windows 2012."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/37407984895984280/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/11/sql-dmv-sysdmosvolumestats-not.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/37407984895984280"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/37407984895984280"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/11/sql-dmv-sysdmosvolumestats-not.html","title":"SQL DMF sys.dm_os_volume_stats not returning result"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://2.bp.blogspot.com/-lNVJkouAOFw/Uo4gqGAL-rI/AAAAAAAACnM/DG35yIJ73E8/s72-c/dm_os_volume_stats_works.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-1789377837533274698"},"published":{"$t":"2013-11-21T00:00:00.000-06:00"},"updated":{"$t":"2013-11-21T13:01:50.916-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"DBCC CHECKDB database snapshot failure"},"content":{"type":"html","$t":"\u003cspan style\u003d\"color: red;\"\u003eMsg 5030, Level 16, State 12, Line 1\u003c/span\u003e\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eThe database could not be exclusively locked to perform the operation.\u003c/span\u003e\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eMsg 7926, Level 16, State 1, Line 1\u003c/span\u003e\u003cbr /\u003e\n\u003cspan style\u003d\"color: red;\"\u003eCheck statement aborted. The database could not be checked as a database snapshot could not be created and the database or table could not be locked. See Books Online for details of when this behavior is expected and what workarounds exist. Also see previous errors for more details.\u003c/span\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIf you encounter this error, this blog post may help you in your troubleshooting.\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nWhen integrity check is performed with DBCC CHECKDB or a more granular integrity check operation like DBCC CHECKALLOC, DBCC CHECKTABLE, or DBCC CHECKCATALOG, it chooses one of these two methods to perform the operation.\u003cbr /\u003e\n\u003cbr /\u003e\n1) Obtain locks with TABLOCK option\u003cbr /\u003e\n2) Internal database snapshot (Introduced in SQL Server 2005)\u003cbr /\u003e\n\u003cbr /\u003e\nBy default, DBCC CHECKDB and other granular integrity operations use an internal database snapshot. It prevents blocking and concurrency problems during the operations. However, if a snapshot could not be created or TABLOCK option is used, the operation acquires locks to obtain the required consistency. More information at this \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms176064.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nThe error encountered stated that the database snapshot could be created and locks could not be obtained.\u003cbr /\u003e\n\u003cbr /\u003e\nLet's dive into some tests.\u003cbr /\u003e\n\u003cbr /\u003e\nIn this example, we have previously created a folder in separate disk drive (In this case, D:\\MSSQL11.MSSQLSERVER\\MSSQL\\Data)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE DATABASE Test\nON PRIMARY \n(\n NAME \u003d Test,\n FILENAME \u003d 'D:\\MSSQL11.MSSQLSERVER\\MSSQL\\Data\\Test.mdf'\n)\nLOG ON\n(\n NAME \u003d Test_log,\n FILENAME \u003d 'D:\\MSSQL11.MSSQLSERVER\\MSSQL\\Data\\Test_log.ldf'\n);\n\u003c/pre\u003e\n\u003cbr /\u003e\nFirst we are going to test the lock option. Open a transaction and perform a integrity check with lock option.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE TEST;\n\nBEGIN TRAN;\n\nCREATE TABLE dbo.tbl1\n(\n col1 int DEFAULT (1)\n);\n\n--ROLLBACK;\n\u003c/pre\u003e\n\u003cbr /\u003e\nVerify there is an open transaction in Test Database,\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDBCC OPENTRAN (Test);\n\u003c/pre\u003e\n\u003cbr /\u003e\nNow in another query window, run the integrity check,\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDBCC CHECKDB (Test) WITH TABLOCK;\n\u003c/pre\u003e\n\u003cbr /\u003e\nIt throws an error, the one listed above. This is expected as the DBCC CHECKDB with lock option couldn't obtain the exclusive lock since there is an open transaction. If it is to use the default method by utilizing internal database snapshot, it does not required to obtain the lock. By leaving the previous transaction open, execute this command,\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDBCC CHECKDB (Test);\n\u003c/pre\u003e\n\u003cbr /\u003e\nThe reason for creating an open transaction is that the integrity check operation will have to resort to internal database snapshot method. If SQL Server is able to create the internal database snapshot during the integrity check operation, then it completes successfully. However, what about if SQL Server could not create that internal database snapshot, which likely to be the reason you are searching the internet for reasons and solutions.\n\u003cbr /\u003e\n\u003cbr /\u003e\nBesides the error listed above, there is no other useful or detailed error in Windows log or SQL Server log that shows what is preventing the database snapshot creation. After a few tests, it ends up that SQL Server service account (NT SERVICE\\MSSQLSERVER in this case) needs to be granted with at least READ permission to the root volume where the database files are located. Remember that the database is created in D:\\ drive? The service account needs to be granted with at least READ permission to root volume (D:). The permission doesn't have to explicitly granted to the service account. Any of the user/groups listed will do,\n\u003cbr /\u003e\n\u003cbr /\u003e\n1) SQL Server Service Account\u003cbr /\u003e\n2) Everyone\u003cbr /\u003e\n3) NT Authority\\Authenticated Users\u003cbr /\u003e\n4) Users (e.g. TestServer\\Users). This group usually includes NT Authority\\Authenticated Users\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe idea is that the SQL Server service account needs at least READ access to the root volume.\n\u003cbr /\u003e\n\u003cbr /\u003e\nFor the sake of testing, I remove all the user/group above from root volume, in my case D: drive (don't do this in production). Making sure there is open transaction, and run DBCC CHECKDB with the default option. It failed with above error message.\n\u003cbr /\u003e\n\u003cbr /\u003e\nBy granting either one of the user/group above with READ permission to the root volume. The DBCC CHECKDB with default option complete successfully.\n\u003cbr /\u003e\n\u003cbr /\u003e\nThis permission issue also causes some dynamic management function not returning results. More information in this \u003ca href\u003d\"http://www.travisgan.com/2013/11/sql-dmv-sysdmosvolumestats-not.html\"\u003epost\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nThis is tested on SQL Server 2008 R2 and SQL Server 2012 on Windows 2008 R2 and Windows 2012.\u003cbr /\u003e\n\u003cbr /\u003e\nNote: Paul Randal mentioned in one of his \u003ca href\u003d\"http://blogs.msdn.com/b/psssql/archive/2009/03/04/sparse-file-errors-1450-or-665-due-to-file-fragmentation-fixes-and-workarounds.aspx\" target\u003d\"_blank\"\u003eold post\u003c/a\u003e stating that SQL Service account must have privilege to create files in the DATA directory of the SQL Server database. It does not work in my case. Regardless of SQL Service account has this privilege in the respective folder, the DBCC CHECKDB still fail with the error as long as it does not have the READ permission to the root volume of the database files.\n\n\n\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://support.microsoft.com/kb/928518\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e about the cause and its suggested solution by manually creating a snapshot and run DBCC CHECKDB on that snapshot (However, please note that database snapshot creation is only possible for Enterprise edition)"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/1789377837533274698/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/11/dbcc-checkdb-database-snapshot-failure.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/1789377837533274698"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/1789377837533274698"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/11/dbcc-checkdb-database-snapshot-failure.html","title":"DBCC CHECKDB database snapshot failure"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7599912782784804056"},"published":{"$t":"2013-10-28T06:00:00.000-05:00"},"updated":{"$t":"2013-11-08T07:57:19.677-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Configuration"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"SQL Server tempdb database size - file creation and file growth"},"content":{"type":"html","$t":"SQL Server tempdb is a system database that used as global resource for temporary user objects, internal objects, row versioning and other operations. The database grows as these resources demand increases, and below the maximum file size limit if previously configured.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nAs tempdb database is the only shared database of the entire SQL instance used for these operations, it is crucial to understand tempdb configuration, resource demand and maintenance. We will be discussing about its size in this post.\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server (from SQL Server 2005) has some catalog views to return information about database files size. There are \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms186782.aspx\" target\u003d\"_blank\"\u003esys.master_files\u003c/a\u003e\u0026nbsp;and \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms174397.aspx\" target\u003d\"_blank\"\u003esys.database_files\u003c/a\u003e. sys.master_files is a system-wide view while the sys.database_files is a per-database view. Most of the times, these two views return the same result in terms of database files size, however not on tempdb database.\u003cbr /\u003e\n\u003cbr /\u003e\nSome of you may already know that the sys.database_files returns the actual tempdb database files size. However, the tempdb database files size returned from sys.master_files has some important information.\u003cbr /\u003e\n\u003cbr /\u003e\nLet's find out.\u003cbr /\u003e\n\u003cbr /\u003e\nThe query below returns the information of database files size for model, tempdb and other database from both sys.database_files and sys.master_files views.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE model;\nSELECT d.name, d.size / 128.0 AS size_MB\nFROM sys.database_files d\n\nUSE tempdb;\nSELECT d.name, d.size / 128.0 AS size_MB\nFROM sys.database_files d\n\nUSE [master];\nSELECT m.name, m.size / 128.0 AS size_MB\nFROM sys.master_files m\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-2vL3hgqhZms/Um3SHDyH1pI/AAAAAAAAClE/n-SMIIQCyNg/s1600/tempdb_original.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"200\" src\u003d\"http://2.bp.blogspot.com/-2vL3hgqhZms/Um3SHDyH1pI/AAAAAAAAClE/n-SMIIQCyNg/s200/tempdb_original.PNG\" width\u003d\"100\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nBoth views returns the same result for model and tempdb database size: model data file \u003cb\u003emodeldev\u003c/b\u003e is around 3MB, and tempdb data file \u003cb\u003etempdev\u003c/b\u003e is 8MB.\u003cbr /\u003e\n\u003cbr /\u003e\nNow, use \u003cb\u003ealter database\u003c/b\u003e statement to change the tempdb data file size to 16MB.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eALTER DATABASE tempdb\nMODIFY FILE\n(\n NAME \u003d tempdev,\n SIZE \u003d 16MB\n);\n\nUSE tempdb;\nSELECT d.name, d.size / 128.0 AS size_MB\nFROM sys.database_files d;\n\nUSE [master];\nSELECT m.name, m.size / 128.0 AS size_MB\nFROM sys.master_files m;\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-G9s2bza78q8/Um3TYn0VX4I/AAAAAAAAClQ/1ugZWBqPO0g/s1600/tempdb_increase.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"200\" src\u003d\"http://4.bp.blogspot.com/-G9s2bza78q8/Um3TYn0VX4I/AAAAAAAAClQ/1ugZWBqPO0g/s200/tempdb_increase.PNG\" width\u003d\"123\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nAfter the changes, both catalog views return same result that \u003cb\u003etempdev\u003c/b\u003e\u0026nbsp;size is now 16MB.\u003cbr /\u003e\n\u003cbr /\u003e\nNow, let's perform some task to require large tempdb data file to accommodate the resource demand. This task will force tempdb to grow. The current setting of filegrowth is 10% and unlimited size.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE TABLE #tbl\n(\n col1 nchar(4000) DEFAULT ''\n);\n\nDECLARE @i int \u003d 0\nWHILE @i \u0026lt; 3000\nBEGIN\n INSERT INTO #tbl\n VALUES (DEFAULT);\n\n SET @i \u003d @i + 1;\nEND;\n\nDROP TABLE #tbl;\n\nUSE tempdb;\nSELECT d.name, d.size / 128.0 AS size_MB\nFROM sys.database_files d;\n\nUSE [master];\nSELECT m.name, m.size / 128.0 AS size_MB\nFROM sys.master_files m;\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-nxRljhYM9zM/Um3U2TywoiI/AAAAAAAAClc/dvJpZCPSR8g/s1600/tempdb_growth.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"200\" src\u003d\"http://3.bp.blogspot.com/-nxRljhYM9zM/Um3U2TywoiI/AAAAAAAAClc/dvJpZCPSR8g/s200/tempdb_growth.PNG\" width\u003d\"130\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe user temporary table creation forces the tempdb data file to grow to around 25.9MB and log file to 1.25MB as reflected from sys.database_files. However, the sys.master_files result still show \u003cb\u003etempdev\u003c/b\u003e as 16MB and \u003cb\u003etemplog\u003c/b\u003e as 0.5MB. This is the time where sys.master_files start to return incorrect file size for tempdb database.\u003cbr /\u003e\n\u003cbr /\u003e\nSo how important is this 'incorrect' file size returned from sys.master_files.\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server recreate tempdb database files each time the SQL Server instance is restarted, regardless if the tempdb physical files exist at the location.\u003cbr /\u003e\n\u003cbr /\u003e\nStop the SQL Server service from SQL Server Configuration Manager, and start the SQL Server. Run the following query.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE tempdb;\nSELECT d.name, d.size / 128.0 AS size_MB\nFROM sys.database_files d;\n\nUSE [master];\nSELECT m.name, m.size / 128.0 AS size_MB\nFROM sys.master_files m;\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-cmbAsbGXXoU/Um3XIhXKGvI/AAAAAAAAClo/4uK7g-7aH70/s1600/tempdb_growth_restart.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"200\" src\u003d\"http://4.bp.blogspot.com/-cmbAsbGXXoU/Um3XIhXKGvI/AAAAAAAAClo/4uK7g-7aH70/s200/tempdb_growth_restart.PNG\" width\u003d\"120\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nBoth catalog views show both tempdb data and log files are returned to the size (16MB and 0.5MB respectively) that was set during the \u003cb\u003ealter database\u003c/b\u003e statement.\u003cbr /\u003e\n\u003cbr /\u003e\nObservation\u003cbr /\u003e\nAfter SQL Server restart, tempdb database size is not using \u003cb\u003emodel\u003c/b\u003e database size (data file - 3.06MB and log file - 0.75MB) as its default size. It does not keep its size that was caused by the file growth. Instead, it uses the original size or the size that was set using \u003cb\u003ealter database\u003c/b\u003e statement, that could be obtained from sys.master_file catalog view.\u003cbr /\u003e\n\u003cbr /\u003e\nWhat does that mean for you\u003cbr /\u003e\n- If you have observed that the current tempdb size is what required for regular operation \u003cb\u003eand\u003c/b\u003e it is caused by previous file growth (you can now tell from the difference between the two catalog views), you may want to use alter database to set the tempdb to that size so if SQL Server restart, it doesn't have to wait for file growth operation when demand kick in.\u003cbr /\u003e\n\u003cbr /\u003e\n- If you are extracting information of tempdb files size for baselining, monitoring, and whatever reason, use sys.database_files to obtain its correct file size.\u003cbr /\u003e\n\u003cbr /\u003e\n- If you have created and configured multiple tempdb data files to avoid tempdb PAGELATCH contention, restarting the SQL Server will recreate the tempdb files as the same configuration shown in sys.master_files. So, if you have set all the tempdb data files appropriately as shown in this view, you don't have to worry of reconfiguring them after restart.\u003cbr /\u003e\n\u003cbr /\u003e\n- If you restore master database during disaster recovery process or move the system database to other location, after SQL Server restart, the tempdb files creation will configured the same way as stored in the new master database."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7599912782784804056/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/10/sql-server-tempdb-database-size-file.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7599912782784804056"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7599912782784804056"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/10/sql-server-tempdb-database-size-file.html","title":"SQL Server tempdb database size - file creation and file growth"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://2.bp.blogspot.com/-2vL3hgqhZms/Um3SHDyH1pI/AAAAAAAAClE/n-SMIIQCyNg/s72-c/tempdb_original.PNG","height":"72","width":"72"},"thr$total":{"$t":"1"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-8220311627137240349"},"published":{"$t":"2013-10-14T07:00:00.000-05:00"},"updated":{"$t":"2013-10-26T11:07:44.185-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"SSIS"}],"title":{"type":"text","$t":"SQL Server 2012 Integration Service Catalogs Installation and Deployment"},"content":{"type":"html","$t":"In previous \u003ca href\u003d\"http://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-3.html\" target\u003d\"\"\u003epost\u003c/a\u003e, we discussed of using integration service (SSIS) to render report in report server (SSRS) via report server web service to send out email with similar idea as data driven subscription. This post will be discussing the deployment of the SSIS project to the SQL Server 2012 new SSIS Catalog and some of its features.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eThere are multiple ways to create SSIS package e.g. with SQL Server Data Tools (SSDT, previously BIDS) from \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms143786.aspx\" target\u003d\"_blank\"\u003eSQL Server feature selection installation\u003c/a\u003e or Visual Studio with \u003ca href\u003d\"http://www.microsoft.com/en-us/download/details.aspx?id\u003d36843\" target\u003d\"_blank\"\u003eSQL Server Data Tools - Business Intelligence for Visual Studio 2012\u003c/a\u003e installed.\u0026nbsp;In this example, the SSIS package is created with Visual Studio 2012 using integration service template (the interface and setting is almost the same with SSDT).\u003cbr /\u003e\n\u003cbr /\u003e\nFrom the previous post, we already have a SSIS project. Keep in mind that since we are deploying to the new \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh479588.aspx\" target\u003d\"_blank\"\u003eSSIS catalog\u003c/a\u003e, we will be deploying the package using\u0026nbsp;\u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh213290.aspx\" target\u003d\"_blank\"\u003eproject deployment model\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eIntegration Service Installation and Configuration\u003c/b\u003e\u003cbr /\u003e\nIn this example, integration service is installed on the Integration Services Server (SQL Server instance that host the SSISDB database, more on SSISDB later). This \u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/ms143731.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e layout the process and steps of installing the service. Although \u003ca href\u003d\"http://support.microsoft.com/kb/942176\" target\u003d\"_blank\"\u003eintegration service is mainly used for monitoring or managing\u003c/a\u003e SSIS package deployed in msdb or file system through SSMS, it does not need to be running for managing SSIS package deployed to the new SSIS catalog. However, it is still required to be installed.\u003cbr /\u003e\n\u003cbr /\u003e\nAfter the integration service is installed, now it is ready to create the SSIS catalog using SSMS. This \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/gg471509.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e list out the steps of creating SSIS catalog. As you see, creating the SSIS catalog is just a few simple steps. There is one thing you may need to pay attention. There is an option \u003cb\u003eEnable automatic execution of Integration Services stored procedure at SQL Server startup\u003c/b\u003e. Selecting this option set the system stored procedure sp_ssis_startup to execute catalog.startup stored procedure in SSISDB database to perform certain maintenance of state of operations in SSISDB catalog. However, there is no SSMS user interface to revert this action after the SSIS catalog is created. To change this behavior, use sp_procoption to enable or disable this startup stored procedure. To verify current status of the SSIS startup stored procedure,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE master;\nGO\n\nSELECT name, is_auto_executed\nFROM sys.procedures\nWHERE name \u003d 'sp_ssis_startup';\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nTo enable the stored procedures to run at startup, use \u003cb\u003etrue\u003c/b\u003e on OptionValue parameter and \u003cb\u003efalse\u003c/b\u003e to disable.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE master;\nGO\n\n--To enable startup stored procedure\nEXEC sp_procoption \n @ProcName \u003d 'sp_ssis_startup',\n @OptionName \u003d 'startup',\n @OptionValue \u003d 'true';\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cb\u003eConfigure SSIS project and Deployment\u003c/b\u003e\u003cbr /\u003e\nIf your project is in package deployment model, you will need to convert it to project deployment model to deploy to SSIS catalog. More steps by steps detail could be found here at this\u0026nbsp;\u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ff929158.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e.\u003cbr /\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\nDeployment to SSIS catalog is relatively simple in a few steps as layout in this \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh213373.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e. In general, open the SSIS project in Visual Studio or SQL Server Data Tools.\u0026nbsp;\u003c/div\u003e\n\u003cdiv\u003e\n- Right click the SSIS project, select Deploy Project\u003c/div\u003e\n\u003cdiv\u003e\n- In the Integration Services Deployment Wizard, select the destination server instance and its path. Create a new folder while selecting the path if needed.\u003c/div\u003e\n\u003cdiv\u003e\n- Review and deploy.\u0026nbsp;\u003c/div\u003e\n\u003cbr /\u003e\nThat's it. Isn't that pretty straight forward? With that being said, make sure to apply standard policy and database practice (e.g. database file size and location, maintenance and backup) on the new SSISDB database. Be sure to understand how backup and restore work on SSIS catalogs. More details in this \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh213291.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nHere are a few features from SSIS catalog.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eEnvironment, Environmental Variables and Parameters\u003c/b\u003e\u003cbr /\u003e\nServer environment, environment variables and parameters offer the capability to let user specify run time value for SSIS packages through server variables and parameters. This \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh213230.aspx\" target\u003d\"_blank\"\u003eMicrosoft article\u003c/a\u003e\u0026nbsp;list the steps of how to create and map a server environment. This\u0026nbsp;\u003ca href\u003d\"http://sqlblog.com/blogs/jamie_thomson/archive/2010/11/13/ssis-server-catalogs-environments-environment-variables-in-ssis-in-denali.aspx\" target\u003d\"_blank\"\u003epost\u003c/a\u003e at sqlblog by Jamie Thomson give a more visual steps by steps how to configure and use server environment and its variables.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eProject Versioning\u003c/b\u003e\u003cbr /\u003e\nSSIS catalog maintain a list of version of the deployed projects. The catalog properties define how long these versioning is retained. It provides the capability to roll back or roll forward to other project version. The project could be exported as .ispac file and imported into SSDT or Visual Studio using \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh270294.aspx\" target\u003d\"_blank\"\u003eIntegration Services Import Project Wizard\u003c/a\u003e. The wizard also has the capability to import the deployed project at SSIS catalog directly to the SSDT or Visual Studio. Keep note that if the previous version of the project is desired to be exported, it requires the project to be reverted to that previous version (using SSMS) first.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003ePerformance Statistics and Troubleshooting\u003c/b\u003e\u003cbr /\u003e\nThe SSIS catalog provide various of catalog views, functions, and stored procedures to get performance statistics and information of execution. It also has the capability to add and query data taps in the package flow. This \u003ca href\u003d\"http://blogs.msdn.com/b/mattm/archive/2011/08/07/troubleshooting-ssis-package-performance-issues.aspx\" target\u003d\"_blank\"\u003emsdn article\u003c/a\u003e by Mat Masson shows an example how to use the views to identify SSIS performance issue. In addition, the SSIS catalog also shipped with some easy to use \u003ca href\u003d\"http://blogs.msdn.com/b/mattm/archive/2011/08/01/report-authoring-on-the-ssis-catalog.aspx\" target\u003d\"_blank\"\u003estandard report\u003c/a\u003e on SSIS package execution and validation.\u003cbr /\u003e\n\u003cbr /\u003e\nAlso, don't forget to check out the awesome \u003ca href\u003d\"http://blogs.msdn.com/b/mattm/archive/tags/30daysofssis/\" target\u003d\"_blank\"\u003e30 days to SSIS series\u003c/a\u003e."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/8220311627137240349/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/10/sql-server-2012-integration-service.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/8220311627137240349"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/8220311627137240349"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/10/sql-server-2012-integration-service.html","title":"SQL Server 2012 Integration Service Catalogs Installation and Deployment"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-2301279081229096835"},"published":{"$t":"2013-09-23T06:00:00.000-05:00"},"updated":{"$t":"2013-09-23T08:36:56.373-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Script"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"Finding Stored Procedures or Functions Contains Certain Table or SQL Text"},"content":{"type":"html","$t":"Sometimes, there are situations where we need to find out a particular or list of stored procedures or functions that contain certain objects or SQL text. There are several ways to accomplish this purpose.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eSQL Server information schema view (INFORMATION_SCHEMA) provides internal metadata of SQL Server. One of the useful view for this purpose is \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms188757.aspx\" target\u003d\"_blank\"\u003eINFORMATION_SCHEMA.ROUTINES\u003c/a\u003e. This view returns each row for each stored procedure and function of current database. The column, ROUTINE_DEFINITION, in the view returns the first \u003cb\u003e4000\u003c/b\u003e\u0026nbsp;characters of the stored procedure or function definition (syntax).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE msdb;\nGO\n\nSELECT ROUTINE_NAME, ROUTINE_DEFINITION, LEN(ROUTINE_DEFINITION) as DEFINITION_LENGTH\nFROM INFORMATION_SCHEMA.ROUTINES\nWHERE ROUTINE_DEFINITION LIKE '%dbo.sysjobs%'\nORDER BY DEFINITION_LENGTH DESC\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-aMR201gq3gE/Uj4UB5pqA9I/AAAAAAAACiU/CfPVqrC92DY/s1600/information_schema.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"143\" src\u003d\"http://1.bp.blogspot.com/-aMR201gq3gE/Uj4UB5pqA9I/AAAAAAAACiU/CfPVqrC92DY/s400/information_schema.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIf you notice, the maximum length returned is 4000. Please be aware that this view only contains definition up to first 4000 characters. Due to this limitation, this view may return incorrect result set of your search criteria, especially when there are stored procedures and functions contains more than 4000 characters.\u003cbr /\u003e\n\u003cbr /\u003e\nThere is a more reliable way to achieve this. Since SQL Server 2005, SQL Server includes a catalog view, \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms175081.aspx\" target\u003d\"_blank\"\u003esys.sql_modules\u003c/a\u003e, that returns a row for each procedure. function, view, trigger and other types. This view has a column,\u0026nbsp;definition, that contains the SQL text of the module.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE msdb;\nGO\n\nSELECT OBJECT_NAME([object_id]) AS [Module], LEN([definition]) AS definition_length, [definition]\nFROM sys.sql_modules\nWHERE [definition] LIKE '%dbo.sysjobs%'\nORDER BY definition_length DESC\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-LqHUA8AxgBY/Uj4dU21EbII/AAAAAAAACjA/HAKgd_XSv9o/s1600/sql_modules.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"143\" src\u003d\"http://1.bp.blogspot.com/-LqHUA8AxgBY/Uj4dU21EbII/AAAAAAAACjA/HAKgd_XSv9o/s400/sql_modules.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNotice that the definition length returned from this view is not limited with 4000 character like the previous view.\u003cbr /\u003e\n\u003cbr /\u003e\nHowever, there is one small problem. Not the search result returned from the view, but to see the entire syntax of the stored procedure or function. Usually if you right click on the definition of the desired row and select copy (or simply Ctrl+C) to copy the definition, you should be able to paste it on the new query windows and review the entire SQL text. However, if the SQL text is too long (I have not discovered the the limitation), either the copy action doesn't copy the entire SQL text or paste action doesn't paste the entire SQL text, only partial SQL text is paste in the new query window.\u003cbr /\u003e\n\u003cbr /\u003e\nIn this example, trying to copy and paste the definition of is sp_sysutility_ucp_configure_policies in the new query window does not paste the entire SQL text of sp_sysutility_ucp_configure_policies stored procedure.\u003cbr /\u003e\n\u003cbr /\u003e\nThere are a few ways to view the entire SQL text of the procedure. You can browse those the object from SSMS and select modify, or use one of the system stored procedure, \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms176112.aspx\" target\u003d\"_blank\"\u003esp_helptext\u003c/a\u003e, to return the entire SQL text of the stored procedure.\u003cbr /\u003e\n\u003cbr /\u003e\nBefore executing the command, make sure you choose the 'result to text' option.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-1oRVoTSD7_M/Uj4fqgR_NUI/AAAAAAAACjU/Wx2Gq1It9YM/s1600/result_to_text.png\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-1oRVoTSD7_M/Uj4fqgR_NUI/AAAAAAAACjU/Wx2Gq1It9YM/s1600/result_to_text.png\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003esp_helptext 'sp_sysutility_ucp_configure_policies'\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-MgPS9vEW3SA/Uj4gL0se8hI/AAAAAAAACjc/Gv6hfbDq_lU/s1600/sp_helptext.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"111\" src\u003d\"http://2.bp.blogspot.com/-MgPS9vEW3SA/Uj4gL0se8hI/AAAAAAAACjc/Gv6hfbDq_lU/s400/sp_helptext.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNow you can copy the result and paste it in the new window and you still have the entire SQL text.\u003cbr /\u003e\n\u003cbr /\u003e\nIn addition to finding existing stored procedures or functions meet the search criteria, you could also examine previously executed and cached stored procedure, functions or ad-hoc queries if they meet the search criteria. Begin in SQL Server 2005, there is a dynamic management view, \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms187404.aspx\" target\u003d\"_blank\"\u003esys.dm_exec_cached_plans\u003c/a\u003e and a dynamics management function \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms181929.aspx\" target\u003d\"_blank\"\u003esys.dm_exec_sql_text\u003c/a\u003e provide information of each cached record and its cached query text accordingly.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE msdb;\nGO\n\nSELECT OBJECT_NAME(q.[objectid]) AS module, c.objtype, q.[text], LEN(q.[text]) AS definition_length\nFROM sys.dm_exec_cached_plans c\nCROSS APPLY sys.dm_exec_sql_text (c.plan_handle) q\nWHERE q.[text] LIKE '%dbo.sysjobs%'\nOPTION (RECOMPILE)\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nHope these view and functions help to find list of stored procedures or functions that contains the table or some SQL syntax you are searching for."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/2301279081229096835/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/09/finding-stored-procedures-or-functions.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2301279081229096835"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2301279081229096835"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/09/finding-stored-procedures-or-functions.html","title":"Finding Stored Procedures or Functions Contains Certain Table or SQL Text"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-aMR201gq3gE/Uj4UB5pqA9I/AAAAAAAACiU/CfPVqrC92DY/s72-c/information_schema.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-2561237431504993176"},"published":{"$t":"2013-09-03T10:47:00.000-05:00"},"updated":{"$t":"2013-11-08T11:05:37.558-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"SSIS"},{"scheme":"http://www.blogger.com/atom/ns#","term":"SSRS"}],"title":{"type":"text","$t":"SSRS Data Driven Subscriptions - Part 3 (Using SSIS with SSRS)"},"content":{"type":"html","$t":"In the \u003ca href\u003d\"http://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-2.html\"\u003eprevious post\u003c/a\u003e, I shows the steps of configuring data driven subscription on the product listing report. However, the data driven subscription feature is only available on SQL Server Business Intelligence and Enterprise edition. In this post, we utilizes SQL Server Integration Service (SSIS) to render SSRS reports and send out email notification based on an external data source.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eCreate a SSIS project or package with SQL Server Data Tools (SSDT) or Business Intelligence Development Studio (BIDS). In this example, I am using Visual Studio 2012 equipped with Business Intelligence for Visual Studio 2012 (SSDT BI) templates (\u003ca href\u003d\"http://www.microsoft.com/en-us/download/details.aspx?id\u003d36843\" target\u003d\"_blank\"\u003edownload here\u003c/a\u003e)\u003cbr /\u003e\n\u003cbr /\u003e\nCreate a Execute SQL Task by dragging one from the SSIS toolbox onto the control flow, and change the name to Extract Email Recipient. Create a Foreach Loop Coailntainer below it and create two Script tasks in the container, and rename the tasks to Extract Report and Em Report respectively. Connect the tasks. Here is how it should look like,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-9CwrBmPKWKE/UiLHZaSPH_I/AAAAAAAACcA/F7IbUsIARYw/s1600/PackageLayout.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-9CwrBmPKWKE/UiLHZaSPH_I/AAAAAAAACcA/F7IbUsIARYw/s320/PackageLayout.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nIn the variables windows, create 5 variables; DepartmentID, RecipientEmail, RecipientName, RecipientResultSet and ReportFile like shown below. (Make sure the data type is O\u003cb\u003ebject\u003c/b\u003e for RecipientResultSet)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-hbP74jU07A8/UiLHZa8ht9I/AAAAAAAACcE/MhKxz6K53GM/s1600/PackageParameter.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-hbP74jU07A8/UiLHZa8ht9I/AAAAAAAACcE/MhKxz6K53GM/s320/PackageParameter.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nConfigure the Extract Email Recipient (Execute SQL Task). Configure the data source connection and the SQL statement\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-tnZaRTwyDTY/UiLHZcFz_JI/AAAAAAAACcI/ZgCbnAP24kg/s1600/ExecuteSQLTask-SQLStatement.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-tnZaRTwyDTY/UiLHZcFz_JI/AAAAAAAACcI/ZgCbnAP24kg/s320/ExecuteSQLTask-SQLStatement.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-imwKugtfbwI/UiLFUJtWdaI/AAAAAAAACa0/abqBljgXd1U/s1600/ExecuteSQLTask-ConnectionManager.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-imwKugtfbwI/UiLFUJtWdaI/AAAAAAAACa0/abqBljgXd1U/s320/ExecuteSQLTask-ConnectionManager.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nSelect the Result Set, enter 0 in the Result Name and select User::RecipientResultSet as Variable Name. This step map the query result to the variable.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-NilJaydst5k/UiLFTzeaPTI/AAAAAAAACag/bcqXSPPUey4/s1600/ExecuteSQLTask-AssignResultSetVariable.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-NilJaydst5k/UiLFTzeaPTI/AAAAAAAACag/bcqXSPPUey4/s320/ExecuteSQLTask-AssignResultSetVariable.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe next step is to configure the for each loop. Double click the for each loop container to open the editor. Select \u003cb\u003eCollection \u003c/b\u003eon the left pane. Change the Enumerator to \u003cb\u003eForeach ADO Enumerator\u003c/b\u003e. Select the User::RecipientResultSet in the ADO object source variable drop down list.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-NXbHtIJZPfc/UiLFVgl-cjI/AAAAAAAACbY/zUBPvClMMqM/s1600/Foreachloop-Enumerator.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-NXbHtIJZPfc/UiLFVgl-cjI/AAAAAAAACbY/zUBPvClMMqM/s320/Foreachloop-Enumerator.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nSelect the \u003cb\u003eVariable Mappings \u003c/b\u003eon the left pane. Add thee variables, User::RecipientEmail, User::RecipientName, User::DepartmentID and map them to index 0, 1, 2 respectively.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-DS-2_p9t0FE/UiLFVwWQ3WI/AAAAAAAACbc/NX2fD3kZGp0/s1600/Foreachloop-VariableMapping.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-DS-2_p9t0FE/UiLFVwWQ3WI/AAAAAAAACbc/NX2fD3kZGp0/s320/Foreachloop-VariableMapping.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe next step is to configure the extract report script task. Double click the task to open the editor. Assign User::DepartmentID to the \u003cb\u003eReadOnlyVariables\u003c/b\u003e\u0026nbsp;and User::ReportFile to \u003cb\u003eReadWriteVariables\u003c/b\u003e. Click \u003cb\u003eEdit Script\u003c/b\u003e\u0026nbsp;to add the script below.\u003cbr /\u003e\n\u003cbr /\u003e\nThis task utilize the \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms152787.aspx\" target\u003d\"_blank\"\u003eReport Server Web Service\u003c/a\u003e to process and render report hosted in SQL Server Reporting Server via \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms155398.aspx\" target\u003d\"_blank\"\u003eReportExecution2005\u003c/a\u003e endpoint. Open the Reporting Services Configuration Manger, and locate the Report Server Web Service URLs. Copy the address for later use.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-ksxV4qaAMJ4/UiLFWLCYZZI/AAAAAAAACbk/EZethHz2d34/s1600/ReportServerWebServiceURL.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-ksxV4qaAMJ4/UiLFWLCYZZI/AAAAAAAACbk/EZethHz2d34/s320/ReportServerWebServiceURL.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nIn order to utilize the Report Server Web Service, we need to add a reference. Right click on \u003cb\u003eReferences\u003c/b\u003e and select \u003cb\u003eAdd Service Reference\u003c/b\u003e. Click Advanced in the \u003cb\u003eAdd Service Reference\u003c/b\u003e window, and click \u003cb\u003eAdd Web Reference\u003c/b\u003e in the \u003cb\u003eService Reference Settings\u003c/b\u003e\u0026nbsp;window.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-jno7GffgTFc/UiLFVSrUv2I/AAAAAAAACbM/xXr12npSVaM/s1600/ExtractReport-AddWebService.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-jno7GffgTFc/UiLFVSrUv2I/AAAAAAAACbM/xXr12npSVaM/s320/ExtractReport-AddWebService.png\" /\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIn the \u003cb\u003eAdd Web Reference window\u003c/b\u003e, type or paste the Report Server Web Service URL with ReportExecution2005.asmx at the end of the string and click the arrow button. Give it \u003cb\u003eWeb Reference Name\u003c/b\u003e as TestReportExecution2005. Click \u003cb\u003eAdd Reference.\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-J7RTxVHlOL4/UiLFU6toWgI/AAAAAAAACbE/KA1pdQfKLrQ/s1600/ExtractReport-AddReportExecutionWebReference.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-J7RTxVHlOL4/UiLFU6toWgI/AAAAAAAACbE/KA1pdQfKLrQ/s320/ExtractReport-AddReportExecutionWebReference.png\" /\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nAdd the web service reference namespace (change to your script namespace)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-UygCWMl81VM/UiLFUcHjFPI/AAAAAAAACa8/fbkjzRY7JiI/s1600/ExtractReport-AddNamespace.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-UygCWMl81VM/UiLFUcHjFPI/AAAAAAAACa8/fbkjzRY7JiI/s320/ExtractReport-AddNamespace.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nType or copy the script (C#) below into the extract report script task.\u003cbr /\u003e\n\u003cbr /\u003e\nHere is the final namespace.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre\u003e#region Namespaces\nusing System;\nusing System.Data;\nusing Microsoft.SqlServer.Dts.Runtime;\nusing System.Windows.Forms;\nusing System.IO;\nusing System.Web.Services.Protocols;\nusing ST_8ca6d57caecf488aa42b0ae8ff74f91d.TestReportExecution2005;\n#endregion\n\u003c/pre\u003e\n\u003cbr /\u003e\nIn the main function\n\n\u003cbr /\u003e\n\u003cpre\u003e            \n// Initiating report execution properties\nReportExecutionService rexec \u003d new ReportExecutionService();\nrexec.Credentials \u003d System.Net.CredentialCache.DefaultCredentials;\nrexec.Url \u003d \"\u0026lt;Your Report Server Web Service URL\u0026gt;/ReportExecution2005.asmx\";\n\n// Render arguments\n// Render format e.g. MHTML/HTML4.0/PDF/EXCEL/IMAGE/CSV\nbyte[] result \u003d null;\nstring reportPath \u003d \"/TestRS/ProductReport\";\nstring format \u003d \"MHTML\";\nstring historyID \u003d null;\nstring devInfo \u003d @\"\u0026lt;deviceinfo\u0026gt;\u0026lt;toolbar\u0026gt;False\u0026lt;/toolbar\u0026gt;\u0026lt;/deviceinfo\u0026gt;\";\n            \n// Prepare report parameter.\nParameterValue[] parameters \u003d new ParameterValue[3];\nparameters[0] \u003d new ParameterValue();\nparameters[0].Name \u003d \"DepartmentID\";\nparameters[0].Value \u003d Dts.Variables[\"User::DepartmentID\"].Value.ToString();\n\nstring encoding \u003d null;\nstring mimeType;\nstring extension;\nWarning[] warnings \u003d null;\nstring[] streamIDs \u003d null;\n\nExecutionInfo execInfo \u003d new ExecutionInfo();\nExecutionHeader execHeader \u003d new ExecutionHeader();\n\nrexec.ExecutionHeaderValue \u003d execHeader;\nexecInfo \u003d rexec.LoadReport(reportPath, historyID);\nrexec.SetExecutionParameters(parameters, \"en-us\");\n\ntry\n{\n    result \u003d rexec.Render(format, devInfo, out extension, out encoding, out mimeType, out warnings, out streamIDs);\n    execInfo \u003d rexec.GetExecutionInfo();\n}\ncatch (SoapException e)\n{\n    Dts.Events.FireError(0, \"report rendering\", e.Message, \"\\r\" + e.StackTrace, String.Empty, 0);\n    Dts.TaskResult \u003d (int)ScriptResults.Failure;\n}\n\n//Write the contents of the report to a mht/html/pdf/csv/xlsx/tiff file to be attached in the email\nstring reportFile \u003d \"ProductListing.mht\";\ntry\n{\n    FileStream stream \u003d File.Create(reportFile, result.Length);\n    stream.Write(result, 0, result.Length);\n    stream.Close();\n\n    Dts.TaskResult \u003d (int)ScriptResults.Success;\n}\ncatch (Exception e)\n{\n    Dts.Events.FireError(0, \"saving report file\", e.Message, \"\\r\" + e.StackTrace, String.Empty, 0);\n    Dts.TaskResult \u003d (int)ScriptResults.Failure;\n}\n//passing the filename for later attachment\nDts.Variables[\"User::ReportFile\"].Value \u003d reportFile;  \n\n\u003c/pre\u003e\nSave the script and click OK on the task.\u003cbr /\u003e\n\u003cbr /\u003e\nThe next step is to configure the Email Report script task. Double click the task to open the editor. Assign User::RecipientEmail, User::RecipientName, User::ReportFile\u0026nbsp;to the\u0026nbsp;\u003cb\u003eReadOnlyVariables.\u003c/b\u003e\u0026nbsp;Click\u0026nbsp;\u003cb\u003eEdit Script\u003c/b\u003e\u0026nbsp;to add the script below.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-BnueblzF4Tw/UiLFTyzEbnI/AAAAAAAACas/pzvyuCp2y9Y/s1600/EmailReport-AddParameter.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-BnueblzF4Tw/UiLFTyzEbnI/AAAAAAAACas/pzvyuCp2y9Y/s320/EmailReport-AddParameter.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nHere is the script (C#). The final namespace.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre\u003e#region Namespaces\nusing System;\nusing System.Data;\nusing Microsoft.SqlServer.Dts.Runtime;\nusing System.Windows.Forms;\nusing System.Net.Mail;\nusing System.IO;\nusing System.Text;\n#endregion\n\u003c/pre\u003e\n\u003cbr /\u003e\nIn the main function\n\u003cbr /\u003e\n\u003cpre\u003e \nMailMessage email \u003d new MailMessage();\nemail.To.Add(Dts.Variables[\"User::ReceipientEmail\"].Value.ToString());\nemail.From \u003d new MailAddress(\"\u0026lt;your sender email address\u0026gt;\");\nemail.Subject \u003d \"Product Listing\";\nemail.Body \u003d Dts.Variables[\"User::ReceipientName\"].Value.ToString();\n\nstring reportFile \u003d Dts.Variables[\"User::ReportFile\"].Value.ToString();\n\ntry\n{\n    //For MHT file. Decode MHTML to HTML and embed in email body\n    if (Path.GetExtension(reportFile) \u003d\u003d \".mht\")\n    {\n        var decodedHtml \u003d new StringBuilder();\n        using (var reader \u003d new StreamReader(reportFile))\n        {\n            while (!reader.EndOfStream)\n            {\n                var line \u003d reader.ReadLine();\n                if (line !\u003d \"Content-Transfer-Encoding: base64\") continue;\n\n                reader.ReadLine();\n                while ((line \u003d reader.ReadLine()) !\u003d String.Empty)\n                    if (line !\u003d null)\n                        decodedHtml.Append(\n                            Encoding.UTF8.GetString(\n                                Convert.FromBase64String(line)));\n                break;\n            }\n        }\n        email.Body \u003d email.Body + Environment.NewLine + decodedHtml.ToString();\n        email.IsBodyHtml \u003d true;\n    }\n    //For regular html file\n    //html \u003d File.ReadAllText(reportFile);\n\n    else\n    {\n        //Attach the file\n        Attachment attachmentFile \u003d new Attachment(reportFile);\n        email.Attachments.Add(attachmentFile);\n    }\n}\ncatch (Exception e)\n{\n   Dts.Events.FireError(0, \"create email message\", e.Message, \"\\r\" + e.StackTrace, String.Empty, 0);\n   Dts.TaskResult \u003d (int)ScriptResults.Failure;\n}\n\nSmtpClient smtpClient \u003d new SmtpClient(\"\u0026lt;your exchange server\u0026gt;\");\n\ntry\n{\n    smtpClient.Send(email);\n    File.Delete(reportFile);\n    Dts.TaskResult \u003d (int)ScriptResults.Success;\n}\ncatch (Exception e)\n{\n    Dts.Events.FireError(0, \"smtp emailing\", e.Message, \"\\r\" + e.StackTrace, String.Empty, 0);\n    Dts.TaskResult \u003d (int)ScriptResults.Failure;\n}\nfinally\n{\n    if (email !\u003d null)\n    {\n      email.Dispose();      \n    }\n    if (stmpClient !\u003d null)\n    {\n      smtpClient.Dispose();\n    }\n}\n\n        \n\u003c/pre\u003e\nThe script above embed the file if it is in MHTML format in the email body, and attach as a file otherwise. I am trying to imitate the \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms160334.aspx\" target\u003d\"_blank\"\u003esame behavior\u003c/a\u003e as the data driven subscription. The MHT file (in MHTML format) is converted from Base64 into html and embed the html string in the email body.\u003cbr /\u003e\n\u003cbr /\u003e\nYou may ask why not just render the report in HTML4.0 in the extract report script task, and just embed the html string? The \u003ca href\u003d\"http://www.adhocgeek.com/2012/11/sending-ssrs-generated-mhtml-with-system-net-mail/\" target\u003d\"_blank\"\u003eproblem\u003c/a\u003e is when the report is rendered directly in html, it is missing a few important properties like min-width and width. This result the table squashed when rendered in Microsoft Outlook like shown below.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-9oB_GoI8d3g/UiQkVYulusI/AAAAAAAAChA/QKxhS8cc8-E/s1600/Customized-htmlformat.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-9oB_GoI8d3g/UiQkVYulusI/AAAAAAAAChA/QKxhS8cc8-E/s320/Customized-htmlformat.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\nHowever, when it is rendered in MHTML, the properties persist.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-7PgiarGJa5k/UiQipvZ_l0I/AAAAAAAACgk/Y-nnXs_dy0c/s1600/Customized-mhtmlformat.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-7PgiarGJa5k/UiQipvZ_l0I/AAAAAAAACgk/Y-nnXs_dy0c/s320/Customized-mhtmlformat.png\" /\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nBoth Manager A and Manager B should receive the email with the product listing report. Above is the example of email body received by Manager A. Notice that there are only 3 products which are from the Manager A's department, similar to data driven subscription. This method doesn't require a SQL Server Business Intelligence or Enterprise edition, but require more development works."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/2561237431504993176/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-3.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2561237431504993176"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2561237431504993176"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-3.html","title":"SSRS Data Driven Subscriptions - Part 3 (Using SSIS with SSRS)"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://2.bp.blogspot.com/-9CwrBmPKWKE/UiLHZaSPH_I/AAAAAAAACcA/F7IbUsIARYw/s72-c/PackageLayout.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7349110530862582568"},"published":{"$t":"2013-09-03T10:46:00.001-05:00"},"updated":{"$t":"2013-09-03T23:30:19.128-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"SSRS"}],"title":{"type":"text","$t":"SSRS Data Driven Subscriptions - Part 2"},"content":{"type":"html","$t":"In \u003ca href\u003d\"http://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-1.html\"\u003eprevious post\u003c/a\u003e, we have created tables with data, and designed and deployed the report to report server. This post will show the steps to configure data driven subscription.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eFirst, data driven subscription is only supported in either SQL Server Business Intelligence or Enterprise edition. Open the Reporting Services Configuration Manager and connect to the instance.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-KJC55Mbtpwg/UiQHYTU9adI/AAAAAAAACfk/NEZd_pLJ8ls/s1600/ReportServerVersion.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-KJC55Mbtpwg/UiQHYTU9adI/AAAAAAAACfk/NEZd_pLJ8ls/s320/ReportServerVersion.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nOnce the required edition is verified, copy the \u003cb\u003eReport Manager URL\u003c/b\u003e\u0026nbsp;and paste it on to your internet browser.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-Yw67uEEXihc/UiQIn-oGCuI/AAAAAAAACf4/IyHO9wo43iU/s1600/ReportManagerURL.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-Yw67uEEXihc/UiQIn-oGCuI/AAAAAAAACf4/IyHO9wo43iU/s320/ReportManagerURL.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nNavigate to the ProductReport, and click the drop down button and select \u003cb\u003eManage\u003c/b\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-Ayk6TdR5RjQ/UiLSy4KdmXI/AAAAAAAACeA/vxJnzEiFol0/s1600/DataDrivenSub-Manage.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-Ayk6TdR5RjQ/UiLSy4KdmXI/AAAAAAAACeA/vxJnzEiFol0/s320/DataDrivenSub-Manage.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nSpecify the delivery method for the subscription. Select \u003cb\u003eEmail\u003c/b\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-OYMcZ7q1mFQ/UiLSygHnOpI/AAAAAAAACdY/kj2WdN_PTm4/s1600/DataDrivenSub-Delivery.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-OYMcZ7q1mFQ/UiLSygHnOpI/AAAAAAAACdY/kj2WdN_PTm4/s320/DataDrivenSub-Delivery.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nConfigure the data source contains recipient information\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-yM5irgskYas/UiLSyQ1BSxI/AAAAAAAACdg/2hrksCcl4u4/s1600/DataDrivenSub-Datasource.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-yM5irgskYas/UiLSyQ1BSxI/AAAAAAAACdg/2hrksCcl4u4/s320/DataDrivenSub-Datasource.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nConfigure the query and click \u003cb\u003eValidate\u003c/b\u003e button to validate the query.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-vvIKqbBbwkc/UiLSza-3hWI/AAAAAAAACd8/SooBtUQSdQc/s1600/DataDrivenSub-RecipientList.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-vvIKqbBbwkc/UiLSza-3hWI/AAAAAAAACd8/SooBtUQSdQc/s320/DataDrivenSub-RecipientList.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nNext, specify and configure the data driven subscription delivery extension setting. Here is where the mapping of a dataset column with certain subscription property such as email recipient, render format, subject and etc. Change \u003cb\u003eTo\u003c/b\u003e\u0026nbsp;property to \u003cb\u003eGet the value from the database\u003c/b\u003e with \u003cb\u003eEmail\u003c/b\u003e in the drop down list. (Optional) Change the \u003cb\u003eComment\u003c/b\u003e\u0026nbsp;to\u0026nbsp;\u003cb\u003eGet the value from the database\u003c/b\u003e\u0026nbsp;with\u0026nbsp;\u003cb\u003eName\u003c/b\u003e\u0026nbsp;in the drop down list. This put the name of the manager in the email body.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-W0Qku8TLNAc/UiLSypaXaxI/AAAAAAAACdk/leFbQ3JDV5Q/s1600/DataDrivenSub-DeliverySetting.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-W0Qku8TLNAc/UiLSypaXaxI/AAAAAAAACdk/leFbQ3JDV5Q/s320/DataDrivenSub-DeliverySetting.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe following step map the report parameter (DepartmentID) with DepartmentID dataset column. This is to filter the product listing report with only the product from the manager's department.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-dLcM5ARiRUY/UiLSzNVDNYI/AAAAAAAACd4/PO2Eh2ptxlQ/s1600/DataDrivenSub-ParameterMapping.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-dLcM5ARiRUY/UiLSzNVDNYI/AAAAAAAACd4/PO2Eh2ptxlQ/s320/DataDrivenSub-ParameterMapping.png\" /\u003e\u003c/a\u003e\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nSpecify the subscription schedule. Click the \u003cb\u003eOn a Schedule created for this subscription\u003c/b\u003e\u0026nbsp;and configure the schedule in the schedule page to run daily and click \u003cb\u003eFinish\u003c/b\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nOnce the subscription is run, Manager A and Manager B should receive the email with the product listing report. Here is the example of the email body received by Manager A. Notice that there are only 3 products which are from the Manager A's department.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-bsF88NMY3JI/UiQOtMd80aI/AAAAAAAACgI/rOx7AZxlEfI/s1600/DataDrivenSub-EmailManagerA.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-bsF88NMY3JI/UiQOtMd80aI/AAAAAAAACgI/rOx7AZxlEfI/s320/DataDrivenSub-EmailManagerA.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThis post shows the steps how to use data driven subscription to distribute email notification to a dynamic subscription retrieved from an external data source. As mentioned earlier, this feature is only available on SQL Server Business Intelligence and Enterprise edition.\u003cbr /\u003e\n\u003cbr /\u003e\nIf you are using other edition or require more customization, you may need to create your own method. The \u003ca href\u003d\"http://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-3.html\"\u003enext post\u003c/a\u003e utilizes SQL Server Integration Service (SSIS) to render SSRS reports and send out email notification based on an external data source."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7349110530862582568/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-2.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7349110530862582568"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7349110530862582568"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-2.html","title":"SSRS Data Driven Subscriptions - Part 2"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://2.bp.blogspot.com/-KJC55Mbtpwg/UiQHYTU9adI/AAAAAAAACfk/NEZd_pLJ8ls/s72-c/ReportServerVersion.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-643179888274637253"},"published":{"$t":"2013-09-03T10:46:00.000-05:00"},"updated":{"$t":"2013-09-03T23:29:57.745-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"SSRS"}],"title":{"type":"text","$t":"SSRS Data Driven Subscriptions - Part 1"},"content":{"type":"html","$t":"SQL Server Reporting Services provides data driven subscription to use dynamics subscription data to distribute reports. Dynamics subscription data is retrieved based on predefined criteria from external data source at run time.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eFor example, there is an requirement to email a daily product listing report to product managers with product respective to their department. This requirement would be difficult to achieve through standard report subscription. However with data driven subscription, it could be easily done. Let's see how it works.\u003cbr /\u003e\n\u003cbr /\u003e\nCreate database and tables. There are 5 products. 3 products from department 1, and 2 products from department 2. Manager A and manager B are the managers on its respective department.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eIF DB_ID('TEST') IS NOT NULL\nDROP DATABASE TEST;\nGO\n\nCREATE DATABASE TEST;\nGO\n\nUSE TEST;\nGO\nCREATE TABLE Products\n(\n ProductID int IDENTITY(1,1),\n ProductName varchar(20),\n ProductDesc varchar(50),\n DepartmentID int\n);\n\nINSERT INTO Products (ProductName, ProductDesc, DepartmentID)\nVALUES \n ('Product 1', 'Product 1 Desc', 1), \n ('Product 2', 'Product 2 Desc', 1),\n ('Product 3', 'Product 3 Desc', 1),\n ('Product 4', 'Product 4 Desc', 2),\n ('Product 5', 'Product 5 Desc', 2);\n\nCREATE TABLE EmailRecipient\n(\n RecipientID int IDENTITY(1,1),\n Name varchar(50),\n Email varchar(50),\n DepartmentID int\n);\n\nINSERT INTO EmailRecipient (Name, Email, DepartmentID)\nVALUES \n ('Manager A', 'ManagerA@Test.com', 1), \n ('Manager B', 'ManagerB@Test.com', 2);\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nCreate report with SQL Server Data Tools (SSDT) or Business Intelligence Development Studio (BIDS). In this example, I am using Visual Studio 2012 equipped with Business Intelligence for Visual Studio 2012 (SSDT BI) templates (\u003ca href\u003d\"http://www.microsoft.com/en-us/download/details.aspx?id\u003d36843\" target\u003d\"_blank\"\u003edownload here\u003c/a\u003e).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-tM5uVT4i5Qc/UiLH1yPEv6I/AAAAAAAACcg/UnFemGGCjHw/s1600/ProductReport.png\"\u003e\u003cimg border\u003d\"0\" height\u003d\"180\" src\u003d\"http://2.bp.blogspot.com/-tM5uVT4i5Qc/UiLH1yPEv6I/AAAAAAAACcg/UnFemGGCjHw/s320/ProductReport.png\" width\u003d\"320\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nAdd a report parameter (DepartmentID) to filter the product list with to this parameter.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-WZ_qsX5x9XI/UiP9sxTK6EI/AAAAAAAACfI/HkHXnlxxyPo/s1600/ReportParameter.png\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-WZ_qsX5x9XI/UiP9sxTK6EI/AAAAAAAACfI/HkHXnlxxyPo/s320/ReportParameter.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThen, add and configure a new data source.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-WTp0QeW3fGo/UiLH1wF_6rI/AAAAAAAACcc/VTml1CtUlTE/s1600/ReportDataSourceSetup.png\"\u003e\u003cimg border\u003d\"0\" height\u003d\"260\" src\u003d\"http://2.bp.blogspot.com/-WTp0QeW3fGo/UiLH1wF_6rI/AAAAAAAACcc/VTml1CtUlTE/s320/ReportDataSourceSetup.png\" width\u003d\"320\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nIn the data source credential properties, select the \u003cb\u003euse this user name and password\u003c/b\u003e, and enter the credential.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-nehkI2x9k04/UiP9r2QzQ_I/AAAAAAAACeg/G2weQgr4XmQ/s1600/ReportDataSourceCredential.png\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-nehkI2x9k04/UiP9r2QzQ_I/AAAAAAAACeg/G2weQgr4XmQ/s320/ReportDataSourceCredential.png\" /\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nThis step is important, the credential is required to stored in the report. If not, you will receive this error when adding a data drive subscription on the report.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-1Mc1_Tp9qD8/UiP_U3BiBJI/AAAAAAAACfU/Pw1C_0fCprA/s1600/DataDrivenSub-credentialnotstored.png\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-1Mc1_Tp9qD8/UiP_U3BiBJI/AAAAAAAACfU/Pw1C_0fCprA/s320/DataDrivenSub-credentialnotstored.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe next step is to create a dataset for the report. Select \u003cb\u003euse a dataset embedded in my report\u003c/b\u003e. Enter the query as shown in the picture below,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-cPr2wFQGxp0/UiP9sAKmk0I/AAAAAAAACe8/uTYYA_QCZb0/s1600/ReportDataset.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-cPr2wFQGxp0/UiP9sAKmk0I/AAAAAAAACe8/uTYYA_QCZb0/s320/ReportDataset.png\" /\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIn the parameters, enter the @DepartmentID as parameter name as specified in the query, and select the DepartmentID report parameter (created in the previous step) in drop down list\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-EObUZgSex1w/UiP9sSn3yQI/AAAAAAAACfA/5axs6QqstJA/s1600/ReportDataset2.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://4.bp.blogspot.com/-EObUZgSex1w/UiP9sSn3yQI/AAAAAAAACfA/5axs6QqstJA/s320/ReportDataset2.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nOnce the dataset is created, design the report like this. A table with \u003cb\u003eProduct Name\u003c/b\u003e\u0026nbsp;and \u003cb\u003eProduct Description \u003c/b\u003efrom the dataset.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-_wYu56dd_rU/UiP9sghJrZI/AAAAAAAACe0/VusGUIY3JO8/s1600/ReportDesign.png\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-_wYu56dd_rU/UiP9sghJrZI/AAAAAAAACe0/VusGUIY3JO8/s320/ReportDesign.png\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nSave the report and deploy the reporting service project to the Reporting Server configured in project property (TargetServerURL).\u003cbr /\u003e\n\u003cbr /\u003e\nSo far we have created the tables, design the report and deploy to report server. In the \u003ca href\u003d\"http://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-2.html\"\u003enext post\u003c/a\u003e, we will configure data driven subscription."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/643179888274637253/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-1.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/643179888274637253"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/643179888274637253"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/09/ssrs-data-drive-subscriptions-part-1.html","title":"SSRS Data Driven Subscriptions - Part 1"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://2.bp.blogspot.com/-tM5uVT4i5Qc/UiLH1yPEv6I/AAAAAAAACcg/UnFemGGCjHw/s72-c/ProductReport.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7709590414701472191"},"published":{"$t":"2013-08-28T06:30:00.000-05:00"},"updated":{"$t":"2013-08-28T07:54:34.328-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Performance Tuning"}],"title":{"type":"text","$t":"Transaction Logging - Table Variable and Temporary Table"},"content":{"type":"html","$t":"You may have already known some of the difference between table variable and temporary table like ability to create statistics, execute in parallel plan (for update query), transaction rollback and other limitations. This post will be focusing on their transaction logging resources.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eThis \u003ca href\u003d\"http://support.microsoft.com/kb/305977/en-us\" target\u003d\"_blank\"\u003eknowledge base article\u003c/a\u003e and \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms175010.aspx\" target\u003d\"_blank\"\u003eTechNet article\u003c/a\u003e\u0026nbsp;list out table variables characteristic and its difference with temporary table as well as suggestion of when to use it. Another \u003ca href\u003d\"http://www.sqlservercentral.com/articles/Temporary+Tables/66720/\" target\u003d\"_blank\"\u003earticle\u003c/a\u003e\u0026nbsp;from sqlservercentral by Wayne Sheffield also list out their difference side by side with some of the myths.\u003cbr /\u003e\n\u003cbr /\u003e\nWe will be focusing on its transaction logging in this post. Microsoft article states that the table variables require less logging resources than temporary table.\u003cbr /\u003e\n\u003cbr /\u003e\nLet's do some test. First, we create a stored procedure with table variable creation and insert one row.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE tempdb;\nGO\n\nIF (OBJECT_ID('tempdb.dbo.Proc1') IS NOT NULL)\nBEGIN\n DROP PROCEDURE dbo.Proc1;\n --Allow time for cached object to be removed\n WAITFOR DELAY '00:00:05';\nEND\nGO\n\nCREATE PROCEDURE dbo.Proc1\nAS\nBEGIN\n DECLARE @tbl1 TABLE (num int);\n \n INSERT INTO @tbl1 (num)\n VALUES (0);\nEND\nGO\n\n--Cache object and initialization\nEXEC Proc1;\nGO\n\n--Truncate log \nCHECKPOINT;\nGO\n\nEXEC PROC1;\nGO\n\nSELECT\n    f.[Current LSN],\n    f.Operation,\n f.Context,\n    f.AllocUnitName,\n    f.[Transaction Name],\n    f.[Transaction ID]\nFROM sys.fn_dblog(NULL, NULL) AS f;\n\u003c/pre\u003e\n\u003cbr /\u003e\nI put a delay of 5 seconds to allow amber time for the cache objects to be removed and prevent those removing log transaction mix up with the transaction log for this demo.\u003cbr /\u003e\n\u003cbr /\u003e\nHere is how the transaction logs look like.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-BP7L2HXYig8/Uh15a3iIu6I/AAAAAAAACWo/j6emadFTyEs/s1600/tablevariable.PNG\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" height\u003d\"111\" src\u003d\"http://1.bp.blogspot.com/-BP7L2HXYig8/Uh15a3iIu6I/AAAAAAAACWo/j6emadFTyEs/s400/tablevariable.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nNext, we do the exact same thing but this time with temporary table.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE tempdb;\nGO\n\nIF (OBJECT_ID('tempdb.dbo.Proc1') IS NOT NULL)\nBEGIN\n DROP PROCEDURE dbo.Proc1;\n --Allow time for cached object to be removed\n WAITFOR DELAY '00:00:05';\nEND\nGO\n\nCREATE PROCEDURE dbo.Proc1\nAS\nBEGIN\n CREATE TABLE #tbl1 (num int);\n \n INSERT INTO #tbl1 (num)\n VALUES (0);\nEND\nGO\n\n--Cache object and initialization\nEXEC Proc1;\nGO\n\n--Truncate log \nCHECKPOINT;\nGO\n\nEXEC PROC1;\nGO\n\nSELECT\n    f.[Current LSN],\n    f.Operation,\n f.Context,\n    f.AllocUnitName,\n    f.[Transaction Name],\n    f.[Transaction ID]\nFROM sys.fn_dblog(NULL, NULL) AS f;\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-LrLrvSgO7v0/Uh16ZnCJVsI/AAAAAAAACWw/182JBmrqu_s/s1600/temptable.PNG\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" height\u003d\"250\" src\u003d\"http://1.bp.blogspot.com/-LrLrvSgO7v0/Uh16ZnCJVsI/AAAAAAAACWw/182JBmrqu_s/s400/temptable.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nThere are more transactions required when using temporary table. The result from this example shows that table variables does indeed use less logging resources.\u003cbr /\u003e\n\u003cbr /\u003e\nIf we change the script from inserting one row to three rows with a while loop, the table variable transaction log looks like this,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDECLARE @tbl1 TABLE (num int);\nDECLARE @num int \u003d 0;\n\nWHILE (@num \u0026lt; 3)\nBEGIN\n INSERT INTO @tbl1 (num)\n VALUES (@num);\n \n SET @num +\u003d 1;\nEND\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-qeipLN7rF7Y/Uh19PGWtpZI/AAAAAAAACW8/Nt3qMG0YGgc/s1600/tablevariable3.PNG\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" height\u003d\"92\" src\u003d\"http://4.bp.blogspot.com/-qeipLN7rF7Y/Uh19PGWtpZI/AAAAAAAACW8/Nt3qMG0YGgc/s400/tablevariable3.PNG\" width\u003d\"400\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nAnd for temporary table, it looks like this,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE TABLE #tbl1 (num int);\nDECLARE @num int \u003d 0;\n\nWHILE (@num \u0026lt; 3)\nBEGIN\n INSERT INTO #tbl1 (num)\n VALUES (@num);\n \n SET @num +\u003d 1;\nEND\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-YEMTx_KKdlE/Uh1-pMTzjVI/AAAAAAAACXM/k3KJM0TGGdo/s1600/temptable3.PNG\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-YEMTx_KKdlE/Uh1-pMTzjVI/AAAAAAAACXM/k3KJM0TGGdo/s400/temptable3.PNG\" /\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nThe transaction for insert statement for both table variable and temporary table appear to be the same. If you notice, every insert entry is wrap within a transaction. This is because by default, SQL Server operates in autocommit transaction mode, and every insert statement is treated as a transaction.\u003cbr /\u003e\n\u003cbr /\u003e\nWhat happen if we change it to explicit transaction? This time let's examine the transaction log for temporary table first.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE tempdb;\nGO\n\nIF (OBJECT_ID('tempdb.dbo.Proc1') IS NOT NULL)\nBEGIN\n DROP PROCEDURE dbo.Proc1;\n --Allow time for cached object to be removed\n WAITFOR DELAY '00:00:05';\nEND\nGO\n\nCREATE PROCEDURE dbo.Proc1\nAS\nBEGIN\n CREATE TABLE #tbl1 (num int);\n DECLARE @num int \u003d 0;\n\n BEGIN TRAN;\n\n WHILE (@num \u0026lt; 3)\n BEGIN\n  INSERT INTO #tbl1 (num)\n  VALUES (@num);\n \n  SET @num +\u003d 1;\n END\n \n COMMIT;\n DROP TABLE #tbl1;\nEND\nGO\n\n--Cache object and initialization\nEXEC Proc1;\nGO\n\n--Truncate log \nCHECKPOINT;\nGO\n\nEXEC PROC1;\nGO\n\nSELECT\n    f.[Current LSN],\n    f.Operation,\n f.Context,\n    f.AllocUnitName,\n    f.[Transaction Name],\n    f.[Transaction ID]\nFROM sys.fn_dblog(NULL, NULL) AS f;\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-KxFCoZTntGo/Uh2AfgsAZSI/AAAAAAAACXY/9LYedX0D-IM/s1600/temptablextran.PNG\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-KxFCoZTntGo/Uh2AfgsAZSI/AAAAAAAACXY/9LYedX0D-IM/s400/temptablextran.PNG\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nWith explicit transaction mode (Begin Tran), all three insert statements are wrapped into one transaction. This is expected.\u003cbr /\u003e\n\u003cbr /\u003e\nWhat about table variable?\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE tempdb;\nGO\n\nIF (OBJECT_ID('tempdb.dbo.Proc1') IS NOT NULL)\nBEGIN\n DROP PROCEDURE dbo.Proc1;\n --Allow time for cached object to be removed\n WAITFOR DELAY '00:00:05';\nEND\nGO\n\nCREATE PROCEDURE dbo.Proc1\nAS\nBEGIN\n DECLARE @tbl1 TABLE (num int);\n DECLARE @num int \u003d 0;\n\n BEGIN TRAN;\n\n WHILE (@num \u0026lt; 3)\n BEGIN\n  INSERT INTO @tbl1 (num)\n  VALUES (@num);\n \n  SET @num +\u003d 1;\n END\n \n COMMIT;\nEND\nGO\n\n--Cache object and initialization\nEXEC Proc1;\nGO\n\n--Truncate log \nCHECKPOINT;\nGO\n\nEXEC PROC1;\nGO\n\nSELECT\n    f.[Current LSN],\n    f.Operation,\n f.Context,\n    f.AllocUnitName,\n    f.[Transaction Name],\n    f.[Transaction ID]\nFROM sys.fn_dblog(NULL, NULL) AS f;\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-CBzBQhJX7xo/Uh2BcZCmEjI/AAAAAAAACXg/kQsgQU4szfE/s1600/tablevariablextran.PNG\" imageanchor\u003d\"1\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-CBzBQhJX7xo/Uh2BcZCmEjI/AAAAAAAACXg/kQsgQU4szfE/s400/tablevariablextran.PNG\" /\u003e\u003c/a\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nEven with explicit transaction mode (Begin Tran), each insert statement is treated as its own transaction as if it is in autocommit transaction mode.\u003cbr /\u003e\n\u003cbr /\u003e\nReferring back to Microsoft article, that transaction involve table variable last only for the duration of an update on the table variable and is not affected by transaction rollback. This appears to be in line with the the above observation that the each insert statement is treated as its own transaction, and explicit transaction rollback will have no effect on it.\u003cbr /\u003e\n\u003cbr /\u003e\nI run a few tests by inserting 1 million rows. Without explicit transaction mode, table variable method generates slightly less transaction log and run slightly faster than temporary table method. However in explicit transaction mode, temporary table method ends up with about 3 times less the transaction logs and averagely run half the time it takes for table variable method to complete the process.\u003cbr /\u003e\n\u003cbr /\u003e\nFrom the tests above, we verify that the table variable require less transaction logging but at the same time each insert/update statement is treated as its own transaction which increase transaction logging. As the golden rule, test it to determine which temporary storage is the best for your environment."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7709590414701472191/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/08/transaction-logging-table-variable-and.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7709590414701472191"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7709590414701472191"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/08/transaction-logging-table-variable-and.html","title":"Transaction Logging - Table Variable and Temporary Table"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-BP7L2HXYig8/Uh15a3iIu6I/AAAAAAAACWo/j6emadFTyEs/s72-c/tablevariable.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7125570503349561171"},"published":{"$t":"2013-08-06T23:14:00.004-05:00"},"updated":{"$t":"2013-08-07T22:52:43.974-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Script"}],"title":{"type":"text","$t":"Create Date and Time SQL Table"},"content":{"type":"html","$t":"\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\n\u003ca href\u003d\"http://4.bp.blogspot.com/-TX5oZvu5t2I/UgHI4uQO_WI/AAAAAAAACV8/ZzL51ZXqqmA/s1600/datetimetable.png\" imageanchor\u003d\"1\" style\u003d\"clear: left; float: left; margin-bottom: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" height\u003d\"80\" src\u003d\"http://4.bp.blogspot.com/-TX5oZvu5t2I/UgHI4uQO_WI/AAAAAAAACV8/ZzL51ZXqqmA/s200/datetimetable.png\" width\u003d\"80\" /\u003e\u003c/a\u003ePreviously I have designed date and time SQL table for one of my database project. This morning, one of my colleague approached me to discuss the options of populating a date table. I tested a few different methods and make some comparison of their performance. Here are a few options,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eIn order to track the time consumed for the script, the script of each option listed below is wrapped within \u003ccode\u003eSYSDATETIME\u003c/code\u003e to record the time difference. Each option is executed 10 times and its average is calculated.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDECLARE @time_begin datetime2(7) \u003d SYSDATETIME();\n\n-- insert the script here --\n\nSELECT DATEDIFF(MILLISECOND, @time_begin, SYSDATETIME());\n\u003c/pre\u003e\n\u003cbr /\u003e\nIn order to be assure the results are not affected by cache and log and data file growth, the statements below along with table creation statements  are executed before each script is run. In addition, database is placed in simple recovery mode for auto log truncation or with manual \u003ccode\u003eCHECKPOINT\u003c/code\u003e. \u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE TEST;\nGO\n\nIF (OBJECT_ID('dbo.tbl1') IS NOT NULL)\nBEGIN\n DROP TABLE dbo.tbl1;\nEND\n\nCREATE TABLE dbo.tbl1 (date_entry date NOT NULL);\nGO\n\nDBCC FREEPROCCACHE;\nDBCC DROPCLEANBUFFERS;\nCHECKPOINT;\n\u003c/pre\u003e\n\u003cbr /\u003e\nA lot of people usually think of using a while loop to populate a table with list of dates. Starting with the begin date and loop until the last date is populated. Here is an example of using while loop,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eSET XACT_ABORT ON;\nSET NOCOUNT ON;\nDECLARE @start_date date \u003d '1930-12-01',\n @last_date date \u003d '2010-12-31',\n @num  int \u003d 0,\n @rows int;\n\nSET @rows \u003d DATEDIFF(dd, @start_date, @last_date) + 1\n\nBEGIN TRAN;\n\nWHILE (@num \u0026lt; @rows)\nBEGIN\n INSERT INTO dbo.tbl1 (date_entry)\n VALUES (DATEADD(dd, @num, @start_date));\n\n SET @num +\u003d 1;\n\n IF (@num % 10000 \u003d 0)\n BEGIN\n  COMMIT;\n  BEGIN TRAN;\n END\nEND\n\nCOMMIT;\n\u003c/pre\u003e\n\u003cbr /\u003e\nThere are a few important things to point out here. First, it is very important to wrap the insert in transaction (in this example, it uses \u003ca href\u003d\"http://www.travisgan.com/2013/05/sql-transaction-modes.html\"\u003eexplicit transaction\u003c/a\u003e with BEGIN TRAN and then COMMIT). This allow all inserted rows to be committed in one single transaction instead of committing each inserted row on its \u003ca href\u003d\"http://www.travisgan.com/2013/05/sql-transaction-modes.html\"\u003eimplicit transaction\u003c/a\u003e\u0026nbsp;which could severely degrade the insert performance. Secondly, notice that the example above uses temporary table. You could use a regular table instead. However, you want to avoid using table variable in this case. When a \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms175010.aspx\" target\u003d\"_blank\"\u003etable variable\u003c/a\u003e is used, it doesn't recognize the explicit (e.g. implicit) transaction, and will commit each insert row on its own transaction. There is one optional batch commit here for the @num % 10000. It allows us to decide how many rows we want to commit as one transaction instead of commit the entire rows. In this example, it commits every 10,000 rows. This example without this optional batch commit (line 26-30) works just fine. This while loop option is relatively fast when it is used correctly.\u003cbr /\u003e\n\u003cbr /\u003e\nSecond option is to use \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms186243(v\u003dsql.105).aspx\" target\u003d\"_blank\"\u003eCommon Table Expressions\u003c/a\u003e (CTE). A recursive CTE could be used to repeatedly execute the insert statement. Here is an example,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eWITH sample AS\n(\n  SELECT CAST('1930-01-01' AS date) AS date_entry\n  UNION ALL\n  SELECT DATEADD(dd, 1, date_entry)\n  FROM sample s\n  WHERE DATEADD(dd, 1, date_entry) \u0026lt;\u003d CAST('2010-12-31' AS date)\n)\nINSERT INTO dbo.tbl1 (date_entry)\nSELECT date_entry\nFROM sample\nOPTION (MAXRECURSION 32767);\n\u003c/pre\u003e\n\u003cbr /\u003e\nThe recursive CTE example is pretty straight. Anchor member defined with the start date and repeat until it reach the last date. If you notice, the example uses a \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/ms181714.aspx\" target\u003d\"_blank\"\u003equery hint\u003c/a\u003e for max recursion. This query hint is not necessary if the recursion is below the default limit at 100. However, if the recursion (number of dates) a more than 100, the query hint is required. It is important to understand the maximum recursion is 32767. If your date range is not over 32767 / 365 \u003d 89 years, then this is one option for you. Compare with the while loop option, this option appears to be negligibly slower.\u003cbr /\u003e\n\u003cbr /\u003e\nAnother way of populating a list of dates without using loop is populate some tables with rows through multiplexing or cross join. Here is the example,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eSET NOCOUNT ON;\nDECLARE @start_date date \u003d '1930-01-01',\n @last_date date \u003d '2010-12-31',\n @low_date date \u003d '1753-01-01',\n @start_no int,\n @last_no int,\n @rows  int,\n @rows_root int;\n\nSET @start_no \u003d DATEDIFF(dd, @low_date, @start_date);\nSET @last_no \u003d DATEDIFF(dd, @low_date, @last_date);\nSET @rows \u003d @last_no - @start_no + 1;\nSET @rows_root \u003d CONVERT(int, CEILING(SQRT(@rows)));\n\nDECLARE @tbl1 TABLE (number int NOT NULL PRIMARY KEY CLUSTERED);\nDECLARE @tbl2 TABLE (number int NOT NULL PRIMARY KEY CLUSTERED);\nDECLARE @tbl3 TABLE (number int NOT NULL PRIMARY KEY CLUSTERED);\n\nINSERT INTO @tbl1 (number)\nSELECT 0 UNION ALL SELECT 1 UNION ALL SELECT 2 UNION ALL \nSELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5 UNION ALL \nSELECT 6 UNION ALL SELECT 7 UNION ALL SELECT 8 UNION ALL \nSELECT 9 UNION ALL SELECT 10 UNION ALL SELECT 14 UNION ALL \nSELECT 15\nORDER BY 1;\n\nINSERT INTO @tbl2 (number)\nSELECT a.number + (16*b.number) + (256*c.number)\nFROM \n @tbl1 a CROSS JOIN \n @tbl1 b CROSS JOIN \n @tbl1 c\nWHERE a.number + (16*b.number) + (256*c.number) \u0026lt; @rows_root\nORDER BY 1;\n\nINSERT INTO @tbl3 (number)\nSELECT a.number + (@rows_root*b.number)\nFROM \n @tbl2 a CROSS JOIN \n @tbl2 b\nWHERE a.number + (@rows_root*b.number) \u0026lt; @rows\nORDER BY 1;\n\nINSERT INTO dbo.tbl1 (date_entry)\nSELECT DATEADD(dd, @start_no + t.number, @low_date)\nFROM @tbl3 t;\n\u003c/pre\u003e\n\u003cbr /\u003e\nThe example above shows a base table is initially populated with some rows and then cross join itself multiple times to create a larger table that consists enough rows to populate the dates. This is my modified part of someone script I found online a while ago. Unfortunately I couldn't find the original designer for the original script (if you know, please comment below so I could give proper credit and reference). If you notice, the designer skillfully breaks down the table population into several parts to optimize the performance. This option shows better performance compare with the other two options.\u003cbr /\u003e\n\u003cbr /\u003e\nYou could use some of the methods shown above for time table. For example using while loop to create a time table,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE TEST;\nGO\nIF (OBJECT_ID('dbo.tbl1') IS NOT NULL)\nBEGIN\n DROP TABLE dbo.tbl1;\nEND\n\nCREATE TABLE dbo.tbl1 (time_entry time(0) NOT NULL);\nGO\n\nSET XACT_ABORT ON;\nSET NOCOUNT ON;\nDECLARE @start_time time(0) \u003d '00:00:00',\n @last_time time(0) \u003d '23:59:59',\n @num  int \u003d 0,\n @rows int;\n\nSET @rows \u003d DATEDIFF(ss, @start_time, @last_time) + 1\n\nBEGIN TRAN;\n\nWHILE (@num \u0026lt; @rows)\nBEGIN\n INSERT INTO dbo.tbl1 (time_entry)\n VALUES (DATEADD(ss, @num, @start_time));\n\n SET @num +\u003d 1;\n\n IF (@num % 10000 \u003d 0)\n BEGIN\n  COMMIT;\n  BEGIN TRAN;\n END\nEND\n\nCOMMIT;\n\u003c/pre\u003e\n\u003cbr /\u003e\nSince there are 24 * 60 * 60 \u003d 86400 records to populate the time table, we can't use the recursive CTE as it has a limitation of 32767 recursion.\u003cbr /\u003e\n\u003cbr /\u003e\nFor cross join method, replace the \u003ccode\u003edate\u003c/code\u003e with \u003ccode\u003etime(0)\u003c/code\u003e for accuracy to second, and replace with second for any \u003ccode\u003eDATEADD\u003c/code\u003e and \u003ccode\u003eDATEDIFF\u003c/code\u003e like \u003ccode\u003eDATEADD(ss, 1, start_time)\u003c/code\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nAll options completed less than a second in my testing environment. If you come across different methods, please feel free to comment below."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7125570503349561171/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/08/create-date-and-time-sql-table.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7125570503349561171"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7125570503349561171"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/08/create-date-and-time-sql-table.html","title":"Create Date and Time SQL Table"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://4.bp.blogspot.com/-TX5oZvu5t2I/UgHI4uQO_WI/AAAAAAAACV8/ZzL51ZXqqmA/s72-c/datetimetable.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-5544188426640595002"},"published":{"$t":"2013-06-24T00:30:00.000-05:00"},"updated":{"$t":"2014-02-17T23:00:40.165-06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Security"}],"title":{"type":"text","$t":"SQL Server Locked Out - Sysadmin Access"},"content":{"type":"html","$t":"You are newly hired and you found out the previous DBA who manage the database left without informing anyone the \u003cb\u003esa\u003c/b\u003e account password, and there is no way to reach him. SQL login or Windows user accounts with sysadmin privilege were disabled or removed intentionally or accidentally. What to do now?\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-kYojFEB-RPk/UcfWFNWnXaI/AAAAAAAACS0/qaQQ8YvrW9E/s1600/loginfailed.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-kYojFEB-RPk/UcfWFNWnXaI/AAAAAAAACS0/qaQQ8YvrW9E/s320/loginfailed.PNG\" height\u003d\"84\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIn order to add a member to sysadmin fixed server role, the login has to be a member of sysadmin. Before we start, here are some basic statements to change password and to grant sysadmin fixed role;\u003cbr /\u003e\n\u003cbr /\u003e\nTo change \u003cb\u003esa\u003c/b\u003e password.\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eALTER LOGIN sa WITH PASSWORD \u003d 'YourNewPassword';\n\u003c/pre\u003e\n\u003cbr /\u003e\nTo add a new SQL login and grant it with sysadmin role,\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE LOGIN YourLogin WITH PASSWORD \u003d 'YourNewPassword';\nALTER SERVER ROLE sysadmin ADD MEMBER YourLogin;\n\u003c/pre\u003e\n\u003cbr /\u003e\nTo add \u0026nbsp;a Windows login and grant it with sysadmin role,\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE LOGIN [YourWindowsLogin] FROM WINDOWS;\nALTER SERVER ROLE sysadmin ADD MEMBER [YourWindowsLogin];\n\u003c/pre\u003e\n\u003cbr /\u003e\nBefore you proceed, please refer to \u003ca href\u003d\"http://www.travisgan.com/2013/06/sql-server-default-sysadmin.html\"\u003eSQL Server Default Sysadmin\u003c/a\u003e\u0026nbsp;to get yourself familiar with the default login created by SQL Server with sysadmin fixed role. The steps below utilize these login to connect to SQL Server as sysadmin fixed role, either by changing the password for current sysadmin logins, or created a new login with sysadmin fixed role.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eUsing BUILTIN\\Administrators Group\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePrerequisite:\u0026nbsp;\u003ccode\u003eBUILTIN\\Administrators\u003c/code\u003e login exists and is enabled in SQL Server. Member of local administrator group\u003c/u\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nWith SQL Server 2005 installed in Windows prior to Windows Vista and Windows Server 2008, member of local administrator do not need their own SQL Server login, and they connect to SQL Server as sysadmin through SQL Server \u003ccode\u003eBUILTIN\\Administrator\u003c/code\u003e login group. Please note that since SQL Server 2008, this \u003ccode\u003eBUILTIN\\Administrator\u003c/code\u003e login group is \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/cc280562(v\u003dsql.100)\" target\u003d\"_blank\"\u003eno longer automatically granted access\u003c/a\u003e to SQL Server. In order for the steps below to work, this group login needs to be manually added in SQL Server.\u003cbr /\u003e\n\u003cbr /\u003e\nTo add user as local administrator\u003cbr /\u003e\n\u003cbr /\u003e\n- Open Computer Management (run compmgmt.msc)\u003cbr /\u003e\n- On the left pane, expand \u003cb\u003eSystem Tools\u003c/b\u003e, expand \u003cb\u003eLocal Users and Groups\u003c/b\u003e, Select\u003cb\u003e Groups\u003c/b\u003e\u003cbr /\u003e\n- Right click \u003cb\u003eAdministrators\u003c/b\u003e and select\u003cb\u003e Add to Group\u003c/b\u003e, and add a Windows user in the pop up windows. Click OK.\u003cbr /\u003e\n\u003cbr /\u003e\nIf SQL Server 2005 is installed on Windows Vista or Windows Server 2008, or more recent version, member of local administrator group connect to SQL Server with its own login credential (require their own login). \u0026nbsp;In order to login as \u003ccode\u003eBUILTIN\\Administrators\u003c/code\u003e, local administrator run the client application (e.g. SSMS or SQLCMD) with elevated privilege through '\u003cb\u003eRun as administrator\u003c/b\u003e'.\u003cbr /\u003e\n\u003cbr /\u003e\nConnect SQL Server through SSMS and login as \u003ccode\u003eBUILTIN\\Administrator\u003c/code\u003e\u003cbr /\u003e\n- Right click SQL Server Management Studio (SSMS),\u003cbr /\u003e\n- Select \u003cb\u003eRun as administrator\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nWhy it needs to explicitly run as administrator when the account is already member of local administrator, please read further as it is explained below.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eUsing SQL Server -m or -f startup option\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePrerequisite: \u0026nbsp;Member of local administrator group.\u0026nbsp;\u003c/u\u003e\u003cu\u003eIf windows user login already exist in SQL Server, the login requires to be enabled.\u003c/u\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nThis may be the most common method. However, this method required to start SQL Server in single user mode, it usually means down time as admin restart the server in single-user mode to address the issue.\u003cbr /\u003e\n\u003cbr /\u003e\nWhen SQL Server service is started with these\u0026nbsp;\u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/d373298b-f6cf-458a-849d-7083ecb54ef5\" target\u003d\"_blank\"\u003estartup option\u003c/a\u003e, any member of server local administrator connects to SQL Server instance is granted with sysadmin fixed role.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003e-m\u003c/b\u003e : start SQL Server instance in single-user mode.\u003cbr /\u003e\n\u003cb\u003e-f\u003c/b\u003e : start SQL Server instance with minimal configuration, and in single-user mode.\u003cbr /\u003e\n\u003cbr /\u003e\nMore information regarding startup option could be found in this\u0026nbsp;\u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/d373298b-f6cf-458a-849d-7083ecb54ef5\" target\u003d\"_blank\"\u003emsdn article\u003c/a\u003e.\u003cbr /\u003e\n\u003cbr /\u003e\nTo add this option,\u003cbr /\u003e\n- Open SQL Server Configuration Manager\u003cbr /\u003e\n- Select \u003cb\u003eSQL Server services\u003c/b\u003e on the left pane.\u003cbr /\u003e\n- Right click the SQL Server instance service, and click \u003cb\u003eproperties\u003c/b\u003e\u003cbr /\u003e\n- Select \u003cb\u003eStartup Parameters\u003c/b\u003e tab on the top. (For SQL Server older than SQL Server 2012, refer note below)\u003cbr /\u003e\n- Type \u003cb\u003e-m\u003c/b\u003e or \u003cb\u003e-f\u003c/b\u003e in the \u003cb\u003eSpecify a startup paramater\u003c/b\u003e box and click \u003cb\u003eAdd\u003c/b\u003e.\u003cbr /\u003e\n- Click \u003cb\u003eApply\u003c/b\u003e and \u003cb\u003eOK\u003c/b\u003e.\u003cbr /\u003e\n- \u003cb\u003eStart\u003c/b\u003e or \u003cb\u003erestart\u003c/b\u003e the service.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-Di_2YRu8f2A/UcfX1ESsVyI/AAAAAAAACTY/ntnpIZSlTAo/s1600/startupoption.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-Di_2YRu8f2A/UcfX1ESsVyI/AAAAAAAACTY/ntnpIZSlTAo/s320/startupoption.PNG\" height\u003d\"175\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nConnect SQL Server through SSMS and login with sysadmin fixed role,\u003cbr /\u003e\n- Right click SQL Server Management Studio (SSMS),\u003cbr /\u003e\n- Select \u003cb\u003eRun as administrator\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nNote: You may need to disable SQL Agent to ensure your connection is the first connection. More detail refer to this \u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/dd207004.aspx\" target\u003d\"_blank\"\u003emsdn article\u003c/a\u003e. For SQL Server version older than 2012, click on Advanced tab, double-click Startup Parameters. In the new window, at the very end, add ;-m or ;-f at the very end (you need the semi-colon ; in front of the startup option).\u003cbr /\u003e\n\u003cbr /\u003e\nYou may wonder why you need to explicitly to '\u003cb\u003eRun as administrator\u003c/b\u003e' when you are member of local administrator. The reason is starting from Windows Vista and Windows Server 2008, Microsoft introduces User Access Control (UAC) feature to improve security by limiting process to run with standard privilege until it is elevated by administrator. Under UAC, local administrator group have two access tokens. A standard user privilege token and administrator privilege token. By default, standard user privilege token is used to perform most action. Refer to this \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/cc512639.aspx\" target\u003d\"_blank\"\u003eTechNet article\u003c/a\u003e on UAC and SQL Server.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eUsing NT AUTHORITY\\SYSTEM\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePrerequisite: \u003ccode\u003eNT AUTHORITY\\SYSTEM\u003c/code\u003e login exist and is enabled in SQL Server. Member of local administrator group\u003c/u\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nIn SQL Server 2005 and SQL Server 2008/2008 R2, \u003ccode\u003eNT AUTHORITY\\SYSTEM\u003c/code\u003e are granted with sysadmin role.\u003cbr /\u003e\n\u003cbr /\u003e\nAn easy way to run an executable as system account is using\u0026nbsp;\u003ca href\u003d\"http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx\" target\u003d\"_blank\"\u003ePsExec\u003c/a\u003e. A brief description of PsExec. It is a very light weight program to execute program on remote system and redirect output to local system. It has an option to run as system account, and that is what we are using it for our purpose here.\n\u003cbr /\u003e\n\u003cbr /\u003e\n- Download\u0026nbsp;\u003ca href\u003d\"http://technet.microsoft.com/en-us/sysinternals/bb897553.aspx\" target\u003d\"_blank\"\u003ePsExec\u003c/a\u003e\u0026nbsp;into a folder (e.g. C:\\PsTool)\u003cbr /\u003e\n- Open a command prompt at that location\u003cbr /\u003e\n- Type \u003ccode\u003epsexec -s -i\u0026nbsp;\"C:\\Program Files (x86)\\Microsoft SQL Server\\110\\Tools\\Binn\\ManagementStudio\\Ssms.exe\"\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nYou will see the user name assigned as \u003ccode\u003eNT AUTHORITY\\SYSTEM\u003c/code\u003e in the SSMS connect to server window.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://1.bp.blogspot.com/-XwF6dXKCkik/UcfXBeMYQ6I/AAAAAAAACTI/XKM7-97AeDY/s1600/ntauthoritysystem.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-XwF6dXKCkik/UcfXBeMYQ6I/AAAAAAAACTI/XKM7-97AeDY/s320/ntauthoritysystem.PNG\" height\u003d\"108\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nYou can also execute \u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/ms162773.aspx\" target\u003d\"_blank\"\u003eSQLCMD\u003c/a\u003e command directly from PsExec.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003epsexec -s \"C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn\\SQLCMD.exe\" -S YourSQLInstance -E -Q \"CREATE LOGIN YourNewLogin WITH PASSWORD \u003d 'YourNewPassword'; ALTER SERVER ROLE sysadmin ADD MEMBER YourNewLogin;\"\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nNote: You may need to modify your SSMS and SQLCMD path accordingly based on your SQL Server version.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eUsing Per-Service SID\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePrerequisite: The per-service SID (e.g. \u003ccode\u003eNT Servie\\SQLWriter\u003c/code\u003e) login used in the step below exist and is enabled in SQL Server. Member of local administrator group\u003c/u\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nBy default, services are running with Per-Service SID account to access resources. As we discussed in previous post, starting from SQL Server 2012, \u0026nbsp;SQL Server by included these three per-service SID login as sysadmin,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Writer service\u003c/b\u003e - \u003ccode\u003eNT Service\\SQLWriter\u003c/code\u003e\u003cbr /\u003e\n\u003cb\u003eSQL Server database engine service\u003c/b\u003e - \u003ccode\u003eNT Service\\MSSQLSERVER\u003c/code\u003e or \u003ccode\u003eNT Service\\MSSQL$InstanceName\u003c/code\u003e\u003cbr /\u003e\n\u003cb\u003eSQL Agent service\u003c/b\u003e - \u003ccode\u003eNT Service\\SQLSERVERAGENT\u003c/code\u003e or \u003ccode\u003eNT Service\\MSSQL$SQLSERVERAGENT$InstanceName\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nSome of the service configurations including the executable file are stored in registry control set. CurrentControlSet subkey is pointing to control set currently use. For example for default SQL Server instance service,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eHKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\SQLWriter\u003c/code\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nYou can find ImagePath entry which specifies the location of executable files for the MSSQLSERVER service.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://2.bp.blogspot.com/-LZ9o9UIVylA/UcfXPIOPzMI/AAAAAAAACTQ/hWkekOUOKqE/s1600/sqlwriterservice.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://2.bp.blogspot.com/-LZ9o9UIVylA/UcfXPIOPzMI/AAAAAAAACTQ/hWkekOUOKqE/s400/sqlwriterservice.PNG\" height\u003d\"61\" width\u003d\"400\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIf we change this entry to point to SQLCMD utility executable located at \u003ccode\u003e\"C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn\\SQLCMD.exe\"\u003c/code\u003e (For SQL Server 2012), the starting the service will execute the modified ImagePath which is SQLCMD.exe instead. With that understanding, if we change the ImagePath to\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\"C:\\Program Files\\Microsoft SQL Server\\110\\Tools\\Binn\\SQLCMD.exe\" -S YourSQLInstance -E -Q \"CREATE LOGIN YourNewLogin WITH PASSWORD \u003d 'YourNewPassword';\nALTER SERVER ROLE sysadmin ADD MEMBER YourNewLogin;\"\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nJust like as if we are executing SQLCMD command.\u003cbr /\u003e\n\u003cbr /\u003e\nBy starting the SQLWriter service (e.g. \u003ccode\u003enet start SQLWriter\u003c/code\u003e), although receive an error it actually execute the command just as it is executing SQLCMD command, and create the login with sysadmin privilege.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003ca href\u003d\"http://3.bp.blogspot.com/-XXVFzmg2bJk/UcfW5voqINI/AAAAAAAACTA/13oGoCJSlMI/s1600/serviceerror.PNG\" imageanchor\u003d\"1\" style\u003d\"margin-left: 1em; margin-right: 1em;\"\u003e\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-XXVFzmg2bJk/UcfW5voqINI/AAAAAAAACTA/13oGoCJSlMI/s320/serviceerror.PNG\" height\u003d\"45\" width\u003d\"320\" /\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNote: You can actually use any of SQL Writer, SQL Server database engine or SQL Agent service for this purpose. As we need to start the service (e.g. net start sqlwriter), which mean we have to stop the service if it is already running. However, since the database engine needs to be running in order for the query to work, of course, I choose SQL Writer service. More details refer to this\u0026nbsp;\u003ca href\u003d\"http://sqlblog.com/blogs/argenis_fernandez/archive/2012/01/12/leveraging-service-sids-to-logon-to-sql-server-2012-instances-with-sysadmin-privileges.aspx\" target\u003d\"_blank\"\u003epost\u003c/a\u003e\u0026nbsp;from Argenis Fernandez.\u003cbr /\u003e\n\u003cbr /\u003e\nAs you can see, member of local administrator are used to pretty much change or login with sysadmin fixed role to SQL Server. It could be both desirable and undesirable from DBA perspective."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/5544188426640595002/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/06/sql-server-locked-out-sysadmin-access.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/5544188426640595002"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/5544188426640595002"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/06/sql-server-locked-out-sysadmin-access.html","title":"SQL Server Locked Out - Sysadmin Access"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-kYojFEB-RPk/UcfWFNWnXaI/AAAAAAAACS0/qaQQ8YvrW9E/s72-c/loginfailed.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7405633625418944835"},"published":{"$t":"2013-06-18T00:00:00.000-05:00"},"updated":{"$t":"2013-06-22T11:26:46.893-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Security"}],"title":{"type":"text","$t":"SQL Server Default Sysadmin "},"content":{"type":"html","$t":"\u003cbr /\u003e\n\u003cdiv imageanchor\u003d\"1\" style\u003d\"clear: left; float: left; margin-bottom: 1em; margin-right: 1em;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"35\" src\u003d\"http://3.bp.blogspot.com/-Pm8HlLrZRX8/Ub_QZV5V7fI/AAAAAAAACSA/d1y4K2D-WSI/s200/sysadmin.PNG\" /\u003e\u003c/div\u003e\nWe discussed about \u003ca href\u003d\"http://www.travisgan.com/2013/06/sql-server-service-account-and-per.html\"\u003eservice account and per-service SID\u003c/a\u003e used by SQL Server and other components in our last post. During SQL Server installation, the process also automatically created a few logins and some of them are assigned with sysadmin fixed server role.\n\n\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nMember of sysadmin fixed server role can perform any action in SQL Server. It is the most privileged role in SQL Server. Thorough consideration should be made before granting any login with this role.\u003cbr /\u003e\n\u003cbr /\u003e\nThis query returns a list of sysadmin fixed role,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eSELECT \n r.name AS [role], \n m.name AS [member]\nFROM sys.server_principals r\nINNER JOIN sys.server_role_members s\n ON s.role_principal_id \u003d r.principal_id\nINNER JOIN sys.server_principals m\n ON m.principal_id \u003d s.member_principal_id\nWHERE r.name \u003d 'sysadmin';\n\u003c/pre\u003e\n\u003cbr /\u003e\nHere are the accounts which are granted with sysadmin role by default in different SQL Server version,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server 2005\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003esa\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003eNT AUTHORITY\\SYSTEM\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003eBUILTIN\\Administrators\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003eSQLServerMSSQLUser$\u003c/b\u003eComputerName\u003cb\u003e$\u003c/b\u003eInstanceName Windows group\u003cbr /\u003e\n- \u003cb\u003eSQLServerSQLAgentUser$\u003c/b\u003eComputerName\u003cb\u003e$\u003c/b\u003eInstanceName Windows group\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server 2008/2008 R2\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003esa\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003eNT AUTHORITY\\SYSTEM\u003c/b\u003e\u003cbr /\u003e\n- Windows user account assigned as sysadmin during installation\u003cbr /\u003e\n- Service account running SQL Server service - or - SQL Server per-service SID (refer to SQL Server 2012 SID login below) if installed on Windows Server 2008 or Windows Vista, and later\u003cbr /\u003e\n- Service account running SQL Agent service - or - SQL Agent per-service SID (refer to SQL Server 2012 SID login below) if installed on Windows Server 2008 or Windows Vista, and later\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server 2012\u003c/b\u003e\u003cbr /\u003e\n- \u003cb\u003esa\u003c/b\u003e\u003cbr /\u003e\n- Windows user account assigned as sysadmin during installation\u003cbr /\u003e\n- SQL Server per-service SID login, \u003cb\u003eNT Service\\MSSQLSERVER\u003c/b\u003e or \u003cb\u003eNT Service\\MSSQL$\u003c/b\u003eInstanceName\u003cbr /\u003e\n- SQL Agent per-service SID login,\u0026nbsp;\u003cb\u003eNT Service\\SQLSERVERAGENT\u003c/b\u003e or \u003cb\u003eNT Service\\MSSQLAGENT$\u003c/b\u003eInstanceName\u003cbr /\u003e\n- SQL Writer per-service SID login,\u0026nbsp;\u003cb\u003eNT Service\\SQLWRITER\u003c/b\u003e\u003cbr /\u003e\n- SQL WMI account, \u003cb\u003eNT Service\\Winmgmt\u003c/b\u003e\u003cbr /\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\nNotes: \u003cb\u003esa\u003c/b\u003e login is disabled in Windows Authentication Mode.\u003cbr /\u003e\n\u003cbr /\u003e\nThe default accounts granted with sysadmin fixed server role tighten with lesser privilege account on more recent SQL Server version.\u003cb\u003e BUILTIN/Administrators\u003c/b\u003e\u0026nbsp;local Windows group is no longer included in sysadmin role as default since SQL Server 2008 to allow access privilege separation between Windows Administrator and SQL Server Administrator. As mentioned in the \u003ca href\u003d\"http://www.travisgan.com/2013/06/sql-server-service-account-and-per.html\"\u003eprevious post\u003c/a\u003e, additional security enhancements added in Windows Vista and Windows Server 2008 allow SQL Server 2008/2008 R2 to take advantage of per-service SID to further isolate the service resource accessibility and privilege isolation.\u003cbr /\u003e\n\u003cbr /\u003e\nIn SQL Server 2012, the powerful built in\u003cb\u003e NT AUTHORITY\\SYSTEM\u0026nbsp;\u003c/b\u003eaccount is no longer granted with sysadmin privilege as default. SQL Server 2012 added additional per-service SID for VSS writer and WMI services with sysadmin role.\u003cbr /\u003e\n\u003cbr /\u003e\nI hope this post give you a better picture on which accounts that have been granted or removed sysadmin fixed server role by default on different SQL Server version."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7405633625418944835/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/06/sql-server-default-sysadmin.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7405633625418944835"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7405633625418944835"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/06/sql-server-default-sysadmin.html","title":"SQL Server Default Sysadmin "}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://3.bp.blogspot.com/-Pm8HlLrZRX8/Ub_QZV5V7fI/AAAAAAAACSA/d1y4K2D-WSI/s72-c/sysadmin.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-9128754338256866169"},"published":{"$t":"2013-06-07T01:18:00.003-05:00"},"updated":{"$t":"2013-06-23T10:50:22.512-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Security"}],"title":{"type":"text","$t":"SQL Server Service Account and Per-Service SID"},"content":{"type":"html","$t":"Starting from Windows Vista and Windows Server 2008, some enhancements have been implemented to \u0026nbsp;tighten ('harden') system service resource accessibility and privilege isolation. Per-service SID are introduced to enable service to run without a high privilege service account, and isolate service resource access from other service.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nPreviously there are five different types of accounts could be used to run service; domain user account (DOMAIN\\USERACCOUNT), local user account (COMPUTER\\USERACCOUNT), local service account, network service account\u0026nbsp;\u0026nbsp;and local system account.\u003cbr /\u003e\n\u003cbr /\u003e\nLocal Service (\u003cb\u003eNT AUTHORITY\\LOCAL SERVICE\u003c/b\u003e) - built-in account. It has the same level access with to a user group of the authenticated user. It accesses network resource without credential.\u003cbr /\u003e\nNetwork Service (\u003cb\u003eNT AUTHORITY\\NETWORK SERVICE\u003c/b\u003e) - built-in account similar to local service. It accesses network resource with the computer credential.\u003cbr /\u003e\nLocal System\u0026nbsp;(\u003cb\u003eNT AUTHORITY\\SYSTEM\u003c/b\u003e) - powerful built-in account that has full access to the computer. It accesses network resource with the computer credential.\u003cbr /\u003e\n\u003cbr /\u003e\nAs local service, network service and high privileged local system are shared service account that could be used by many services, compromised of this service may result access to resources that is not related to the corresponding service. Per-Service SID is introduced to separate resource access by each separate service. Per-Service SID is derived from the service name and is unique to the service. Resource access could be directly modified at the object Access Control Lists (ACL) pertaining to the per-service SID instead of the service account. This allows service to run with a low privilege service account.\u003cbr /\u003e\n\u003cbr /\u003e\nBy default, SQL Server services enable per-service SID and are running under unrestricted per-service SID. That means that both service account and per-service SID are added to service process token. The service has the access to resources granted to \u003cb\u003eboth\u003c/b\u003e service account and the per-service SID.\u003cbr /\u003e\n\u003cbr /\u003e\n** When granting additional permission, do not grant to service account. Instead, permission should be granted through security group or directly to per-service SID.\u003cbr /\u003e\n\u003cbr /\u003e\nUsing command prompt to identify SID type,\u003cbr /\u003e\n\u003ccode\u003esc qsidtype MSSQLSERVER\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nOr identify through registry at, \u003ccode\u003eHKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\MSSQLSERVER\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nTo display the per-service SID of default SQL server instance,\u003cbr /\u003e\n\u003ccode\u003esc showsid MSSQLSERVER\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"129\" src\u003d\"http://3.bp.blogspot.com/--DnnU3T8Xmk/UccY5JoeNzI/AAAAAAAACSk/P1QQSyC_e3c/s320/per-servicesid.PNG\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIn Windows 7 and Windows Server 2008 R2, there are two new service accounts types were introduced to simplify SPN administration and credential (password) management,\u003cbr /\u003e\n\u003cbr /\u003e\nManaged Service Account (MSA) - domain created account to run service on a single computer. Password is managed automatically by domain controller. Can't use to login to computer, but could be use to start service. Named in format of DOMAIN\\ACCOUNTNAME\u003cb\u003e$\u003c/b\u003e. Automatically manage credential (password) and Service Principal Name (SPN) with Active Directory. This account is preferred for network resource access compare to virtual account.\u003cbr /\u003e\n\u003cbr /\u003e\nVirtual Account - managed local account with password auto-managed. Service running with virtual account can access network resource with its computer credential DOMAIN\\COMPUTERNAME\u003cb\u003e$\u003c/b\u003e. The virtual account is named in the format of\u0026nbsp;\u003cb\u003eNT SERVICE\\\u003c/b\u003eSERVICENAME (e.g.\u0026nbsp;\u003cb\u003eNT SERVICE\\MSSQLSERVER\u003c/b\u003e)\u003cbr /\u003e\n\u003cbr /\u003e\nFrom Windows 7, Windows Server 2008 R2 and later, per-service SID can be the virtual account used for service. (As per-service SID is derived from the service's name, the name format is similar with virtual account)\u003cbr /\u003e\n\u003cbr /\u003e\nBelow are list of\u003cb\u003e SQL Server 2012\u003c/b\u003e Services default service account and per-service SID name (on Windows Vista, Windows Server 2008 and above)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server Database Engine\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\nDefault Instance - \u003cb\u003eNT Service\\MSSQLSERVER\u003c/b\u003e\u003cbr /\u003e\nNamed Instance - \u003cb\u003eNT Service\\MSSQL$\u003c/b\u003eInstanceName\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eSID -\u0026nbsp;Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLogonRight\u003cbr /\u003e\nSeAssignPrimaryTokenPrivilege\u003cbr /\u003e\nSeChangeNotifyPrivilege\u003cbr /\u003e\nSeIncreaseQuotaPrivilege\u003cbr /\u003e\n\u003cbr /\u003e\n** For instant file initialization, include this permission to the SID\u003cbr /\u003e\nSeManageVolumePrivilege\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\nStandalone (Windows Vista and Windows Server 2008) Network Service\u003cbr /\u003e\nStandalone (Windows 7/8 and Windows Server 2008 R2/2012) Virtual Account / MSA\u003cbr /\u003e\nFailover Cluster Instance (FCI) (Windows Server 2008) Domain User\u003cbr /\u003e\nFailover Cluster Instance (FCI) (Windows Server 2008 R2/2012) Domain User\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server Agent\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\nDefault Instance - \u003cb\u003eNT Service\\SQLSERVERAGENT\u003c/b\u003e\u003cbr /\u003e\nName Instance - \u003cb\u003eNT Service\\SQLAGENT$\u003c/b\u003eInstanceName\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eSID -\u0026nbsp;Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLoginRight\u003cbr /\u003e\nSeAssignPrimaryTokenPrivilege\u003cbr /\u003e\nSeChangeNotifyPrivilege\u003cbr /\u003e\nSeIncreaseQuotaPrivilege\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\nStandalone (Windows Vista and Windows Server 2008) Network Service\u003cbr /\u003e\nStandalone (Windows 7/8 and Windows Server 2008 R2/2012) Virtual Account / MSA\u003cbr /\u003e\nFCI (Windows Server 2008) Domain User\u003cbr /\u003e\nFCI (Windows Server 2008 R2/2012) Domain User\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSSRS\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\nDefault Instance - \u003cb\u003eNT SERVICE\\ReportServer\u003c/b\u003e\u003cbr /\u003e\nName Instance - \u003cb\u003eNT SERVICE\\$\u003c/b\u003eInstanceName\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eSID -\u0026nbsp;Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLogonRight\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\nStandalone (Windows Vista and Windows Server 2008) Network Service\u003cbr /\u003e\nStandalone (Windows 7/8 and Windows Server 2008 R2/2012) Virtual Account / MSA\u003cbr /\u003e\nFCI (Windows Server 2008) Network Service\u003cbr /\u003e\nFCI (Windows Server 2008 R2/2012) Virtual Account\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSSIS\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\nDefault/Named Instance - \u003cb\u003eNT SERVICE\\MsDtsServer110\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eSID -\u0026nbsp;Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLoginRight\u003cbr /\u003e\nSeChangeNotifyPrivilege\u003cbr /\u003e\nSeImpersonatePrivilege\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\nStandalone (Windows Vista and Windows Server 2008) Network Service\u003cbr /\u003e\nStandalone (Windows 7 and Windows Server 2008 R2) Virtual Account / MSA\u003cbr /\u003e\nFailover Cluster Instance (FCI) (Windows Server 2008) Network Service\u003cbr /\u003e\nFailover Cluster Instance (FCI) (Windows Server 2008 R2) Virtual Account\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eFull-Text Search\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\nDefault Instance - \u003cb\u003eNT SERVICE\\MSSQLFDLauncher\u003c/b\u003e\u003cbr /\u003e\nNamed Instance - \u003cb\u003eNT SERVICE\\MSSQLFDLauncher$\u003c/b\u003eInstanceName\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eSID - Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLogonRight\u003cbr /\u003e\nSeIncreaseQuotaPrivilege\u003cbr /\u003e\nSeChangeNotifyPrivilege\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\nStandalone (Windows Vista and Windows Server 2008) Local Service\u003cbr /\u003e\nStandalone (Windows 7/8 and Windows Server 2008 R2/2012) Virtual Account\u003cbr /\u003e\nFCI (Windows Server 2008) Local Service\u003cbr /\u003e\nFCI (Windows Server 2008 R2/2012) Virtual Account\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server VSS Writer\u003c/b\u003e\u003cbr /\u003e\nDefault/Named Instance - \u003cb\u003eNT SERVICE\\SQLWriter\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service account\u003c/u\u003e\u003cbr /\u003e\n\u003cb\u003eNT AUTHORITY\\SYSTEM\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSSAS\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\n\u003cb\u003eNT SERVICE\\MSSQLServerOLAPService\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eWindows Security Group\u003c/u\u003e\u003cbr /\u003e\nDefault Instance - \u003cb\u003eSQLServerMSASUser$\u003c/b\u003eComputerName\u003cb\u003e$MSSQLSERVER\u003c/b\u003e\u003cbr /\u003e\nName Instance - \u003cb\u003eSQLServerMSASUser$\u003c/b\u003eComputerName\u003cb\u003e$\u003c/b\u003eInstanceName\u003cbr /\u003e\nPowerPivot Sharepoint Instance - \u003cb\u003eSQLServerMSASUser$\u003c/b\u003eComputerName\u003cb\u003e$PowerPivot\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eWindows Security Group - Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLogonRight\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\nStandalone (Windows Vista and Windows Server 2008) Network Service\u003cbr /\u003e\nStandalone (Windows 7/8, Windows Server 2008 R2/2012) Virtual Account / MSA\u003cbr /\u003e\nFCI (Windows Server 2008) Domain User\u003cbr /\u003e\nFCI (Windows Server 2008 R2/2012) Domain User\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eSQL Server Browser\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\n\u003cb\u003eNT SERVICE\\SQLBrowser\u003c/b\u003e\u003cbr /\u003e\n\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\u003cu\u003e\nWindows Security Group\u003c/u\u003e\u003cbr /\u003e\nDefault/Named Instance -\u003cb\u003e SQLServer2005SQLBrowserUser$\u003c/b\u003eComputerName\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eWindows Security Group - Windows Privilege and Right\u003c/u\u003e\u003cbr /\u003e\nSeServiceLogonrRight\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cu\u003eDefault Service Account\u003c/u\u003e\u003cbr /\u003e\n\u003cb\u003eNT AUTHORITY\\LOCAL SERVICE\u003c/b\u003e\u003cbr /\u003e\n\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\n\u003cb\u003eSQL Windows Management Instrument (WMI)\u003c/b\u003e\u003cbr /\u003e\n\u003cu\u003ePer-Service SID name\u003c/u\u003e\u003cbr /\u003e\n\u003cb\u003eNT SERVICE\\winmgmt\u003c/b\u003e\u003cbr /\u003e\n\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\nMore details can be found on this MSDN article on \u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/ms143504.aspx\" target\u003d\"_blank\"\u003eConfigure Windows Service Accounts and Permissions\u003c/a\u003e\u0026nbsp;and\u0026nbsp;\u003ca href\u003d\"http://technet.microsoft.com/en-us/library/dd349799.aspx\" target\u003d\"_blank\"\u003eSystem Service\u003c/a\u003e,"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/9128754338256866169/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/06/sql-server-service-account-and-per.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/9128754338256866169"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/9128754338256866169"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/06/sql-server-service-account-and-per.html","title":"SQL Server Service Account and Per-Service SID"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://3.bp.blogspot.com/--DnnU3T8Xmk/UccY5JoeNzI/AAAAAAAACSk/P1QQSyC_e3c/s72-c/per-servicesid.PNG","height":"72","width":"72"},"thr$total":{"$t":"1"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7533785954595943118"},"published":{"$t":"2013-05-31T01:31:00.000-05:00"},"updated":{"$t":"2013-08-09T00:02:16.742-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Performance Tuning"}],"title":{"type":"text","$t":"SQL Transaction Modes"},"content":{"type":"html","$t":"There are different ways of starting transactions in SQL Server. Each transaction modes differ from one another in their own behavior and it is crucial to understand how they work.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nSQL Transaction is a set of SQL commands that performed as single component of work unit. All SQL commands within the transaction are committed if executed successfully, or rolled back if any of the SQL command fail. It is used to provide reliable way to allow correct recovery of failure and keep database consistent.\u003cbr /\u003e\n\u003cbr /\u003e\nHere are the list of different transaction modes in SQL Server,\u003cbr /\u003e\n\u003cbr /\u003e\n- Autocommit transaction\u003cbr /\u003e\n- Implicit transaction\u003cbr /\u003e\n- Explicit transaction\u003cbr /\u003e\n- Batch-scoped transaction\u003cbr /\u003e\n- Distributed transaction\u003cbr /\u003e\n\u003cbr /\u003e\nBy default, SQL Server operates in \u003cb\u003eautocommit transaction \u003c/b\u003emode. All T-SQL statement is treated as a transaction and automatically committed or rolled back upon its completion. This behavior is changed when an implicit transaction is enabled or start of an explicit transaction.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eImplicit transaction\u003c/b\u003e is enabled with \u003ccode\u003eSET IMPLICIT_TRANSACTIONS ON\u003c/code\u003e statement. SQL Server automatically start an implicit transaction on the next T-SQL statement (e.g. update, insert, alter). While the transaction is started automatically, \u003ccode\u003eCOMMIT\u003c/code\u003e and \u003ccode\u003eROLLBACK\u003c/code\u003e statement is used explicitly to end the transaction. To disable implicit transaction, use \u003ccode\u003eSET IMPLICIT_TRANSACTIONS OFF\u003c/code\u003e statement.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eExplicit transaction\u003c/b\u003e is started with \u003ccode\u003eBEGIN TRANSACTION\u003c/code\u003e statement. The transaction is committed with \u003ccode\u003eCOMMIT TRANSACTION\u003c/code\u003e or rolled back with \u003ccode\u003eROLLBACK TRANSACTION\u003c/code\u003e statement.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eBatch-scoped transaction\u003c/b\u003e only apply to MARS (Multiple Active Result Sets). Implicit or explicit transaction started in MARS is managed as batch-scoped transaction. This type of transaction is rolled back if the batch or stored procedure which started the transaction does not complete (commit/rollback) its transaction before the batch or stored procedure exits.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eDistributed transaction\u003c/b\u003e is a type of transaction usually span over two or more servers. The transaction is managed by transaction manager such as Microsoft Distributed Transaction Coordinator (MS DTC). Transaction within single instance across multiple databases is considered as distributed transaction however managed locally and internally by the single instance. The distributed transaction is started with \u003ccode\u003eBEGIN DISTRIBUTED TRANSACTION\u003c/code\u003e statement. \u003ccode\u003eCOMMIT TRANSACTION\u003c/code\u003e and \u003ccode\u003eROLLBACK TRANSACTION\u003c/code\u003e are used to commit or rollback the distributed transaction. Local transaction is promoted to distributed transaction when \u003ccode\u003eSET REMOTE_PROC_TRANSACTIONS ON\u003c/code\u003e and a remote query are executed.\u003cbr /\u003e\n\u003cbr /\u003e\nDistributed transaction is also known as two-phase commit (2PC). In the first phase, \u003cb\u003eprepare phase\u003c/b\u003e, \u0026nbsp;transaction manager (MS DTC or local server instance for single instance-multiple databases transaction) receive the transaction commit request, and sends prepare command to all resource manager (the participating servers) to make the transaction durable and flush its respective data and log to disk. In the second phase, \u003cb\u003ecommit phase\u003c/b\u003e, once the transaction manager receives successful prepare from all resource manager, it issues commit command to all resource manager to complete the commit. After transaction manager receives complete commit, it sends notification back to the original requester and remove (forget) the transaction from its list.\u003cbr /\u003e\n\u003cbr /\u003e\nHere are some tests with transaction log to show how these different type of transaction modes start and commit. Test setup,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE DATABASE TEST;\nGO\n\nALTER DATABASE TEST\nSET RECOVERY SIMPLE;\nGO\n\nUSE TEST;\nGO\n\nCREATE TABLE dbo.Table1\n(\n ID int IDENTITY(1,1) PRIMARY KEY CLUSTERED,\n detail varchar(10)\n);\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cb\u003eAutocommit transaction\u003c/b\u003e,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Initial IAM, PFS Page Allocation and etc\nINSERT INTO dbo.Table1 VALUES ('test0');\n--Clear the transaction log\nCHECKPOINT;\n\nINSERT INTO dbo.Table1 VALUES ('test1');\nINSERT INTO dbo.Table1 VALUES ('test2');\n\nDBCC LOG (TEST, 0);\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"130\" src\u003d\"http://1.bp.blogspot.com/-OnIys5KQcZc/Uag2Vj1h_6I/AAAAAAAACPw/wHhs6YfaBz4/s400/AutocommitTransaction.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe transaction log shows each insert statement is treated as a transaction. The first insert statement begin its transaction at line 5 and commit the transaction at line 7. Same with second insert transaction.\u003cbr /\u003e\n\u003cbr /\u003e\n\u0026nbsp;\u003cb\u003eImplicit Transaction\u003c/b\u003e,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Clear the table\u003c/pre\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eTRUNCATE TABLE dbo.Table1;\nGO\n\n--Initial IAM, PFS Page Allocation and etc\nINSERT INTO dbo.Table1 VALUES ('test0');\n--Clear the transaction log\nCHECKPOINT;\n\nSET IMPLICIT_TRANSACTIONS ON;\nINSERT INTO dbo.Table1 VALUES ('test1');\nINSERT INTO dbo.Table1 VALUES ('test2');\nCOMMIT;\nSET IMPLICIT_TRANSACTIONS OFF;\n\nDBCC LOG (TEST, 0);\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"106\" src\u003d\"http://1.bp.blogspot.com/-qlF4gWHAXlU/Uag2WEhy40I/AAAAAAAACQE/e4sC326R0Lc/s400/ExplicitTransaction.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\nDue to implicit transaction mode is enabled, it begins a transaction on first insert transaction and only commit the transaction on the commit statement. Transaction log shows that both insert transactions are within the same transaction begin at line 5 and commit at line 8.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eExplicit Transaction\u003c/b\u003e,\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Clear the table\u003c/pre\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eTRUNCATE TABLE dbo.Table1;\nGO\n\n--Initial IAM, PFS Page Allocation and etc\nINSERT INTO dbo.Table1 VALUES ('test0');\n--Clear the transaction log\nCHECKPOINT;\n\nBEGIN TRAN\nINSERT INTO dbo.Table1 VALUES ('test1');\nINSERT INTO dbo.Table1 VALUES ('test2');\nCOMMIT TRAN;\n\nDBCC LOG (TEST, 0);\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"106\" src\u003d\"http://1.bp.blogspot.com/-N6kqWabVDdA/Uag2WOuUdiI/AAAAAAAACQA/2OlHXdUiMCc/s400/ImplicitTransaction.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe \u003ccode\u003eBEGIN TRAN\u003c/code\u003e starts an explicit transaction and commit on the \u003ccode\u003eCOMMIT TRAN\u003c/code\u003e statement. The transaction start at line 5 and commit at line 8.\u003cbr /\u003e\n\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\n\u003cb\u003eBatch-Scoped Transaction\u003c/b\u003e,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Clear the table\u003c/pre\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eTRUNCATE TABLE dbo.Table1;\nGO\n\n--Initial IAM, PFS Page Allocation and etc\nINSERT INTO dbo.Table1 VALUES ('test0');\n--Clear the transaction log\nCHECKPOINT;\n\u003c/pre\u003e\n\u003cbr /\u003e\nIn this example, PowerShell is used to open a MARS connection and executes insert statements with an explicit transaction without commit/rollback statement. After the query completed, the transaction is automatically rollback due to the fact that SQL Server is treating it as batch-scoped transaction.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:powershell\"\u003e$connection \u003d New-Object System.Data.SqlClient.SqlConnection\n$connection.ConnectionString \u003d 'server\u003dTESTSERVER;database\u003dTEST;Trusted_Connection\u003dTrue;MultipleActiveResultSets\u003dTrue;'\n\n$command \u003d New-Object System.Data.SqlClient.SqlCommand\n$command.Connection \u003d $connection\n$command.CommandText \u003d \n\"BEGIN TRAN \" +\n\"INSERT INTO TEST.dbo.Table1 VALUES ('test1'); \" +\n\"INSERT INTO TEST.dbo.Table1 VALUES ('test1'); \"\n\n$connection.Open()\n$command.ExecuteNonQuery()\n$connection.Close()\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"173\" src\u003d\"http://3.bp.blogspot.com/-g2Sui9ZmFVA/Uag2VrVmFxI/AAAAAAAACP0/wzwNrnV6pBY/s400/BatchScopedTransaction.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe transaction log shows that the transactions are rolled back.\u003cbr /\u003e\n\u003cb\u003e\u003cbr /\u003e\u003c/b\u003e\n\u003cb\u003eDistributed Transaction,\n\n\u003c/b\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e--Create another database\nCREATE DATABASE TEST1\nGO\n\nALTER DATABASE TEST1\nSET RECOVERY SIMPLE;\nGO\n\nUSE TEST1;\nGO\n\nCREATE TABLE dbo.RemoteTable1\n(\n ID int IDENTITY(1,1) PRIMARY KEY CLUSTERED,\n detail varchar(10)\n);\nGO\n\n--Initial IAM, PFS Page Allocation and etc\nINSERT INTO dbo.RemoteTable1 VALUES ('test0');\nCHECKPOINT;\nGO\n\n--Back to TEST database\nUSE TEST;\nGO\n\n--Clear the table\nTRUNCATE TABLE dbo.Table1;\nGO\n\n--Initial IAM, PFS Page Allocation and etc\nINSERT INTO dbo.Table1 VALUES ('test0');\n--Clear the transaction log\nCHECKPOINT;\n\n--Insert 2 transactions to table1 in TEST database, and 2 transactions to remotetable1 in TEST1 database\nBEGIN DISTRIBUTED TRAN\nINSERT INTO TEST.dbo.Table1 VALUES ('test1');\nINSERT INTO TEST.dbo.Table1 VALUES ('test2');\n\nINSERT INTO TEST1.dbo.RemoteTable1 VALUES ('test1');\nINSERT INTO TEST1.dbo.RemoteTable1 VALUES ('test2');\nCOMMIT;\n\nDBCC LOG (TEST, 0);\nDBCC LOG (TEST1, 0);\n\u003c/pre\u003e\n\u003cbr/\u003e\n\u003cbr/\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"261\" src\u003d\"http://2.bp.blogspot.com/-RNVS0m-Po3k/Uag6ZX66-MI/AAAAAAAACQg/_-xLi-aqtL4/s400/DistributedTransaction.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe above test simulates distributed transaction across multiple databases in a single instance. From the log, the resource manager (server instance) first inserts the rows, when transaction manager (in this case, the same server instance as well) receive the commit command, it issues a \u003cb\u003eprepare\u003c/b\u003e command (line 7) and then \u003cb\u003ecommit\u003c/b\u003e the transaction (line 9). Note that SQL Server will automatically promote this transaction as distributed transaction even with just a regular explicit transaction with \u003ccode\u003eBEGIN TRAN\u003c/code\u003e since the transaction involves multiple databases. As this is a local distributed transaction managed by the single instance, the transaction is removed (\u003cb\u003eforget\u003c/b\u003e at line 10) after the successful commit.\u003cbr /\u003e\n\u003cbr /\u003e\nNote that \u003ccode\u003eBEGIN TRANSACTION\u003c/code\u003e and \u003ccode\u003eBEGIN TRAN\u003c/code\u003e; \u003ccode\u003eCOMMIT\u003c/code\u003e, \u003ccode\u003eCOMMIT TRAN\u003c/code\u003e and \u003ccode\u003eCOMMIT TRANSACTION\u003c/code\u003e; \u003ccode\u003eROLLBACK\u003c/code\u003e, \u003ccode\u003eROLLBACK TRAN\u003c/code\u003e and \u003ccode\u003eROLLBACK TRANSACTION\u003c/code\u003e are interchangeable respectively in this post."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7533785954595943118/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/05/sql-transaction-modes.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7533785954595943118"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7533785954595943118"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/05/sql-transaction-modes.html","title":"SQL Transaction Modes"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-OnIys5KQcZc/Uag2Vj1h_6I/AAAAAAAACPw/wHhs6YfaBz4/s72-c/AutocommitTransaction.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-2372353869881151128"},"published":{"$t":"2013-05-26T11:34:00.001-05:00"},"updated":{"$t":"2013-10-31T08:52:09.422-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"PowerShell"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"SQL Server Agent Job and Powershell Version"},"content":{"type":"html","$t":"Since SQL Server 2008, we are able to create SQL Agent job step to run Windows PowerShell scripts. That is great! However, as the latest version 3.0 release of Windows PowerShell, be aware that SQL Server Agent may not be running the same PowerShell version. Before you deploy any PowerShell script to SQL Agent job, you\u0026nbsp;need to make sure you test the PowerShell scripts in the right version.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nThere are 2 ways of running PowerShell scripts in SQL Server Agent job. It can be run in,\u003cbr /\u003e\n\u003cbr /\u003e\n1) PowerShell job step\u003cbr /\u003e\n2) Command prompt (CmdExec) job step\u003cbr /\u003e\n\u003cbr /\u003e\nIf the Windows PowerShell scripts is being run as PowerShell job step, SQL Server Agent job step run \u003cb\u003e\u003ca href\u003d\"http://technet.microsoft.com/en-us/library/cc280450.aspx\" target\u003d\"_blank\"\u003esqlps utility\u003c/a\u003e\u003c/b\u003e to launches PowerShell and load SQL Server PowerShell module (also called \u003cb\u003esqlps\u003c/b\u003e). The gotcha is that it launches its own PowerShell version regardless of the latest version of PowerShell installed on the server.\u003cbr /\u003e\n\u003cbr /\u003e\nOn SQL Server 2012, sqlps utility launches PowerShell 2.0\u003cbr /\u003e\nOn SQL Server 2008/2008R2, sqlps utility launches PowerShell 1.0\u003cbr /\u003e\n\u003cbr /\u003e\nIf you have downloaded and installed the latest\u0026nbsp;\u003ca href\u003d\"http://www.microsoft.com/en-us/download/details.aspx?id\u003d34595\" target\u003d\"_blank\"\u003ePowerShell 3.0\u003c/a\u003e\u0026nbsp;or currently on Windows Server 2012 or Windows 8 (pre-installed with PowerShell 3.0), you are likely to have developed your scripts in PowerShell 3.0. There are difference between PowerShell 2.0 and PowerShell 3.0, and your script written and tested in PowerShell 3.0 may not work in PowerShell 2.0 environment. (well, that what happen to me)\u003cbr /\u003e\n\u003cbr /\u003e\nIf you have installed PowerShell 3.0, there is no easy way to switch Windows PowerShell Integrated Scripting Environment (PowerShell ISE) to previous version. However, you could easily change version in Windows PowerShell (powershell.exe) with -version command,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003epowershell -version 2\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nAt least you can still verify the newly developed script this way if it works on older version. Of course you can always uninstall the latest version and install the \u003ca href\u003d\"http://support.microsoft.com/kb/968929/en-us\" target\u003d\"_blank\"\u003ePowerShell ISE 2.0\u003c/a\u003e for your development and test.\u003cbr /\u003e\n\u003cbr /\u003e\nHowever, in certain circumstances that you really need to use PowerShell 3.0, you could choose the second way of running PowerShell script, through CmdExec job step. SQL Server Agent uses command prompt to run PowerShell (the installed version, e.g. PowerShell 3.0) and executes the PowerShell scripts.\u003cbr /\u003e\n\u003cbr /\u003e\nA quick verification on SQL Agent job step running PowerShell version,\u003cbr /\u003e\n\u003cbr /\u003e\n- Create a SQL Agent job\u003cbr /\u003e\n- Create first job step, with step type change to PowerShell\u003cbr /\u003e\n- Insert the command \u003ccode\u003e$psversiontable.psversion\u003c/code\u003e to retrieve the executing powershell version\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"254\" src\u003d\"http://4.bp.blogspot.com/-anwXHEgCuIo/UaI2KCqCjLI/AAAAAAAACOg/FXjUKOYjzH4/s320/SQLjobPowershell.PNG\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n- On advanced tab, check 'Include step output in history' to return version result in the job history for review.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"320\" src\u003d\"http://1.bp.blogspot.com/-mqJ-kHjqeSY/UaI2KvFShkI/AAAAAAAACOo/drEUwX58Br4/s320/jobstepsetup.PNG\" width\u003d\"300\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n- Create second job step, with step type change to Operating System (CmdExec)\u003cbr /\u003e\n- Insert the command \u003ccode\u003e\"C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\powershell.exe\" \"$psversiontable.psversion\"\u003c/code\u003e to retrieve the executing powershell version. On advanced tab, check 'Include step output in history' to return version result in the job history for review.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"208\" src\u003d\"http://4.bp.blogspot.com/-YEVjQixBO4Q/UaI2KIwKiDI/AAAAAAAACOc/yAYiQMTpSe4/s320/SQLjobCmd.PNG\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n- Save the job\u003c/div\u003e\n\u003cdiv\u003e\n- Run the job\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\nIn my environment with Windows Server 2012 and SQL Server 2012 installed, the job history result shows version 2 is returned on PowerShell step and version 3 is returned in CmdExec step.\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"52\" src\u003d\"http://1.bp.blogspot.com/-ZRbrjXDOSPU/UaI2vIwHBbI/AAAAAAAACO8/jdpaTw_OUZA/s400/jobresult.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\nRefer to this \u003ca href\u003d\"http://www.travisgan.com/2013/03/powershell-and-performance-monitor.html\"\u003eblog post, PowerShell and Performance Monitor (Perfmon) Counter\u003c/a\u003e for PowerShell script to extract performance counter and import into database for analysis.\u003c/div\u003e\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/2372353869881151128/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/05/sql-server-agent-job-and-powershell.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2372353869881151128"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2372353869881151128"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/05/sql-server-agent-job-and-powershell.html","title":"SQL Server Agent Job and Powershell Version"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://4.bp.blogspot.com/-anwXHEgCuIo/UaI2KCqCjLI/AAAAAAAACOg/FXjUKOYjzH4/s72-c/SQLjobPowershell.PNG","height":"72","width":"72"},"thr$total":{"$t":"1"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-2002506860832553251"},"published":{"$t":"2013-05-22T00:01:00.002-05:00"},"updated":{"$t":"2013-05-22T00:03:26.538-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"Flushing Dirty Page To Disk"},"content":{"type":"html","$t":"SQL Server utilizes a technique that write modified\u0026nbsp;data page to the disk asynchronously. There are multiple ways to initiate this process; lazy writing, eager writing and checkpoint.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nSQL server stores data in 8 KB pages. When user submits a query asking for data, SQL Server locates the data and retrieves the data pages that contain those information. The process involves retrieving the data pages from the disk into the buffer cache (memory), and returns the result to the user. If user submits a update query on these data, SQL server makes modification on the corresponding data pages in the buffer cache, without updated the data pages on the disk immediately. These modified pages on memory that have not written disk are called dirty pages. Just a quick note, transaction logs are generated during this data page modification but we will be focusing mainly on data page for this blog post.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"216\" src\u003d\"http://1.bp.blogspot.com/-KZ13oMR3jhc/UZxMxgTn1hI/AAAAAAAACN8/-6tMYIiQ4s8/s400/FlushPage.png\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe dirty pages are written to disk at a later time. There are mechanisms that initiate this process.\u003cbr /\u003e\n\u003cbr /\u003e\n- Lazy Writing\u003cbr /\u003e\n- Eager Writing\u003cbr /\u003e\n- Checkpoint\u003cbr /\u003e\n\u003cbr /\u003e\nFor quick description, lazy writer is a system process that inspects and removes infrequently used pages in memory with the goal of keeping free buffer (memory) available. After the dirty pages are written to the disk, they are then removed from the memory.\u003cbr /\u003e\n\u003cbr /\u003e\nThere is another system process called eager writer. This process writes dirty pages into disk during non-logged operations (e.g. minimally logged bulk insert) and allows update operation not having to wait for its completion before dirty pages could be written to disk.\u003cbr /\u003e\n\u003cbr /\u003e\nAs for Checkpoint, SQL server periodically issues a checkpoint to scan the buffer cache and write dirty pages into the disk (It also writes the log in the cache to the disk). There are four different types of checkpoints\u003cbr /\u003e\n\u003cbr /\u003e\n- Automatic\u003cbr /\u003e\n- Indirect\u003cbr /\u003e\n- Manual\u003cbr /\u003e\n- Internal\u003cbr /\u003e\n\u003cbr /\u003e\nAutomatic checkpoint is issued to write the dirty page to the disk as it tries to meet the upper limit of recovery interval set in server configuration option (sp_configure 'recovery interval'). In addition of trying to meet recovery interval, automatic checkpoint is also generated when the log becomes 70% full when the database is set as SIMPLE recovery model. The time interval of automatic checkpoint depends on the amount of log and its last checkpoint.\u003cbr /\u003e\n\u003cbr /\u003e\nSQL Server 2012 introduces a new TARGET_RECOVERY_TIME\u0026nbsp;setting on database level. When TARGET_RECOVERY_TIME is set more than the default 0, SQL Server issues indirect checkpoint trying to meet this user specified recovery time for the corresponding database. The idea is, the fewer the dirty pages, the less transaction logs have to be processed (roll forward) during recovery.\u003cbr /\u003e\n\u003cbr /\u003e\nT-SQL CHECKPOINT command can be executed to manually issue a checkpoint.\u003cbr /\u003e\n\u003cbr /\u003e\nThe last type of checkpoint is issued internally by various server operations e.g. shutting down SQL server, some ALTER DATABASE command, database backup, database-snapshot creation and etc. For example, change database to READ_ONLY mode initiates internal checkpoint as shown in the \u003ccode\u003eDBCC LOG\u003c/code\u003e\u0026nbsp;result below,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eALTER DATABASE TEST\nSET READ_ONLY;\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: left;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"56\" src\u003d\"http://4.bp.blogspot.com/-uvqnvQ1SGgA/UZxQuy9h8UI/AAAAAAAACOM/kRmC3KLXjMY/s400/readonlycheckpoint.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/2002506860832553251/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/05/flushing-dirty-page-to-disk.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2002506860832553251"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2002506860832553251"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/05/flushing-dirty-page-to-disk.html","title":"Flushing Dirty Page To Disk"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-KZ13oMR3jhc/UZxMxgTn1hI/AAAAAAAACN8/-6tMYIiQ4s8/s72-c/FlushPage.png","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-9024633587822496205"},"published":{"$t":"2013-05-21T00:16:00.000-05:00"},"updated":{"$t":"2013-05-21T22:48:39.800-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"Missing SQL Performance Counters"},"content":{"type":"html","$t":"\u003cdiv class\u003d\"separator\" style\u003d\"clear: left; float: left; margin-bottom: 1em; margin-right: 1em; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"70\" src\u003d\"http://1.bp.blogspot.com/-ObW8f5kAewI/UZsCGawBpdI/AAAAAAAACNs/lTVx-bK-c44/s200/sqlmissingcounter.jpg\" width\u003d\"70\" /\u003e\u003c/div\u003e\nIf you have been using performance monitor (perfmon) counter or trying to setup up one to monitor your SQL Server performance, and come to find out that there are no SQL Server Perfmon counters on the list, hopefully this blog post can help in your troubleshooting.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eBefore running commands below or applying any registry change, do a quick check on this registry key to verify if the performance counters have been explicitly disabled (set to 1) for entire system,\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003c/div\u003e\n\u003cbr /\u003e\n\u003ccode\u003eHKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\Disable Performance Counters\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nOr on the particular SQL instance,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003eHKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\MSSQLSERVER\\Performance\\Disable Performance Counters\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nSimply changing this registry key to zero enable the performance counter back. If this counter does not exist, performance counter is enabled by default. \u003cbr /\u003e\n\u003cbr /\u003e\nIf this is not the cause, verify if the SQL counters appear on the local Perfmon. If they appear on the local Perfmon, verify the remote registry service is started.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"73\" src\u003d\"http://4.bp.blogspot.com/-z-Gp_xQu5vU/UZr5pWLlrXI/AAAAAAAACMc/1bmdQjwukOk/s400/remoteregistry.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nRun \u003ccode\u003eservices.msc\u003c/code\u003e and in the services window, scroll down until you see remote registry. Verify it is started.\u003cbr /\u003e\n\u003cbr /\u003e\nI have incidents that issuing Get-Counter PowerShell command cause the remote registry to terminate. See below for more descriptions.\u003cbr /\u003e\n\u003cbr /\u003e\n\u0026nbsp;If it doesn't. you could try using\u0026nbsp;\u003ccode\u003eunlodctr\u003c/code\u003e and \u003ccode\u003elodctr\u003c/code\u003e to re-register the SQL counters.\u003cbr /\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\n1) Open an elevated command prompt (run as administrator).\u003c/div\u003e\n\u003cdiv\u003e\n2) Navigate to the SQL instance binn folder (the SQL instance that is missing the perfmon counter)\u003c/div\u003e\n\u003cdiv\u003e\ne.g.\u0026nbsp;\u003ccode\u003eC:\\Program Files\\Microsoft SQL Server\\MSSQL11.MSSQLSERVER\\MSSQL\\Binn\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"45\" src\u003d\"http://1.bp.blogspot.com/-XutB59ppMdQ/UZr5pCmxDyI/AAAAAAAACMU/xdWxnVig5Xc/s400/navigatetofolder.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n3) Use \u003ccode\u003eunlodctr\u003c/code\u003e to unload SQL counters\u003cbr /\u003e\ne.g. \u003ccode\u003eunlodctr MSSQLSERVER\u003c/code\u003e (for default instance)\u003cbr /\u003e\ne.g. \u003ccode\u003eunlodctr SQLSERVERAGENT\u003c/code\u003e (for default SQL Agent)\u003cbr /\u003e\ne.g. \u003ccode\u003eunlodctr MSSQL$TEST\u003c/code\u003e (for named instance)\u003cbr /\u003e\ne.g. \u003ccode\u003eunlodctr SQLAGENT$TEST\u003c/code\u003e (for SQL agent)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"57\" src\u003d\"http://1.bp.blogspot.com/-HKW3XGvcq_U/UZr5pcji7EI/AAAAAAAACMg/MmuvX5DFQts/s400/unlodctr.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n4) Load and register SQL counters with \u003ccode\u003elodctr\u003c/code\u003e\u003cbr /\u003e\ne.g. \u003ccode\u003elodctr perf-MSSQLSERVERsqlctr.ini\u003c/code\u003e (for default instance)\u003cbr /\u003e\ne.g. \u003ccode\u003elodctr perf-SQLSERVERAGENTsqlagtctr.ini\u003c/code\u003e (for default SQL Agent)\u003cbr /\u003e\ne.g. \u003ccode\u003elodctr perf-MSSQL$TESTsqlctr.ini\u003c/code\u003e (for named instance)\u003cbr /\u003e\ne.g. \u003ccode\u003elodctr perf-SQLAGENT$TESTsqlagtctr.ini\u003c/code\u003e (for SQL Agent)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"56\" src\u003d\"http://2.bp.blogspot.com/-H_izfMADmok/UZr5oggh8ZI/AAAAAAAACMM/6OU191t9rEY/s400/lodctr.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\n5) Restart remote registry services.\u003cbr /\u003e\n\u003ccode\u003enet stop \"Remote Registry\"\u0026nbsp;\u003c/code\u003e\u003cbr /\u003e\n\u003ccode\u003enet start \"Remote Registry\"\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"90\" src\u003d\"http://1.bp.blogspot.com/-Lrk_lPTWkh8/UZr-8qbRkHI/AAAAAAAACNc/d49GpFJx55M/s400/stopstartremoteregistry.PNG\" width\u003d\"400\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n6) If necessary,\u0026nbsp;re-synchronize\u0026nbsp;WMI with associate WinPrivSE.exe process ID (PID). The PID can be found from task manager.\u003cbr /\u003e\n\u003cbr /\u003e\ne.g. \u003ccode\u003ewinmgmt /resyncperfctr \"5660\"\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/--Gp3p4Y1m3o/UZr97NzDALI/AAAAAAAACNI/PJ0yBq9b2-0/s1600/winprvse.PNG\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nNote: Replace 5660 with your own PID.\u003c/div\u003e\n\u003cbr /\u003e\nA lot of times we run Perfmon on different server to extract and store the perfmon data of the remote SQL server. I have a few incidents that if I ran the \u003ca href\u003d\"http://technet.microsoft.com/en-us/library/hh849685.aspx\" target\u003d\"_blank\"\u003eGet-Counter\u003c/a\u003e PowerShell command as the first connection to the remote server (after server restart or applying the above steps), I received this error 'Unable to connect to machine' later when trying to connect to remote server with Perfmon. (In this case, it is not access permissions issue)\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" src\u003d\"http://3.bp.blogspot.com/-jGE7aPV06tg/UZr97DBLp0I/AAAAAAAACNM/EGPcDEsQLDI/s1600/unabletoconnectmachine.PNG\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe remote registry service at the remote server appears to have terminated by itself with a system error. Here is the error from event viewer,\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" src\u003d\"http://1.bp.blogspot.com/-pqLmLqzF6uc/UZr3T_NVWPI/AAAAAAAACL4/BXtESmOVMTg/s1600/remoteregistrystop.PNG\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nHowever, if I use Windows Performance Monitor tool (Perfmon/Logman) as first connection, it does not has the problem. In my case, both monitoring server and remote server are Windows Server 2008 R2 and the PowerShell is Version 3. This doesn't appear to be the same problem as described in this \u003ca href\u003d\"http://support.microsoft.com/kb/2159286\" target\u003d\"_blank\"\u003eMicrosoft Support KB\u003c/a\u003e, but somehow has similar behavior. I haven't thoroughly investigate and reproduce the error, so you environment may have different behavior.\u003cbr /\u003e\n\u003cbr /\u003e\nIf all steps above fail to register the SQL counters, you could consider rebuilding the entire performance counter registry.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003elodctr /R\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nWarning: Please be aware that this command overwrite all performance counter registry setting and replace with configuration defined in the file specified.\n\u003cbr /\u003e\n\u003cbr /\u003e\nFor more thorough investigation and troubleshooting, refer to \u003ca href\u003d\"http://blogs.msdn.com/b/psssql/archive/2009/03/03/troubleshooting-sql-server-2005-2008-performance-counter-collection-problems.aspx\" target\u003d\"_blank\"\u003eBob Dorr's blog post\u003c/a\u003e on troubleshooting performance counter collection problem."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/9024633587822496205/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/05/missing-sql-performance-counters.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/9024633587822496205"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/9024633587822496205"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/05/missing-sql-performance-counters.html","title":"Missing SQL Performance Counters"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://1.bp.blogspot.com/-ObW8f5kAewI/UZsCGawBpdI/AAAAAAAACNs/lTVx-bK-c44/s72-c/sqlmissingcounter.jpg","height":"72","width":"72"},"thr$total":{"$t":"0"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-2678734092615018269"},"published":{"$t":"2013-05-14T07:00:00.000-05:00"},"updated":{"$t":"2013-06-05T08:55:29.379-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Troubleshooting"}],"title":{"type":"text","$t":"SQL Server 2012 Simple Recovery Database Log File Explosion"},"content":{"type":"html","$t":"\u003cdiv class\u003d\"separator\" style\u003d\"clear: left; float: left; margin-bottom: 1em; margin-right: 1em; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"70\" src\u003d\"http://2.bp.blogspot.com/-6fAhmvob_tw/UZHCSbCSJoI/AAAAAAAACLo/5gdW46A7euY/s200/explosion.jpg\" width\u003d\"70\" /\u003e\u003c/div\u003e\nIf you have been\u0026nbsp;enthusiastically\u0026nbsp;upgrading your databases to SQL Server 2012 and have setup Simple Recovery Model on some of the databases, you may want to check your log file (LDF) size.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003eWe recently upgraded some SQL instance to SQL Server 2012, and we were very excited about it. Most of the stuff looks pretty good except a few hiccup like missing maintenance plan on SQL 2012 SP1 CU3, which Microsoft has released a \u003ca href\u003d\"http://support.microsoft.com/kb/2832017\" target\u003d\"_blank\"\u003ehotfix\u003c/a\u003e\u0026nbsp;for it.\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\nThis Monday morning (yes, it is always Monday morning) we noticed a few database log files have grown so large that the disk drive almost ran out disk space. We were able to shrink a large log file that were at that time consuming small percentage of the log file and free up some disk space. With the urgent issue resolved, I dive into SQL Server and trying to investigate further and find the root cause.\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\nFirst thing came to my mind was to examine if there is anything that holding back the log file truncation. The sys.databases DMV shows that the database as SIMPLE recovery model on the\u0026nbsp;recovery_model_desc, but strangely with LOG_BACKUP on the log_reuse_wait_desc. Under simple recovery model, checkpoint is automatically issued when log file becomes 70% full, unless there are other process delaying the log truncation, in this case strangely log backup. Missing log backup should be delaying log truncation only when the database is set to FULL or BULK-LOGGED recovery model. The LOG_BACKUP log reuse wait for simple recovery model is just not right.\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\n\u003cdiv\u003e\nAt least the reason of the log file explosion was found due to the older logs aren't marked as reused (to be truncated) as it is waiting for a 'LOG_BACKUP'. After further investigation and tests, I was able to reproduce the behavior.\u0026nbsp;\u003c/div\u003e\n\u003cdiv\u003e\n\u003cbr /\u003e\u003c/div\u003e\nChange model database to simple recovery model.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eALTER DATABASE model\nSET RECOVERY SIMPLE;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nCreate a database..\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE DATABASE test\nON PRIMARY\n(\n NAME \u003d test_data,\n SIZE \u003d 5MB,\n FILENAME \u003d N'C:\\Program Files\\Microsoft SQL Server\\MSSQL11.TEST\\MSSQL\\DATA\\test_data.mdf'\n)\nLOG ON\n(\n NAME \u003d test_log,\n SIZE \u003d 1MB,\n FILEGROWTH \u003d 1MB,\n FILENAME \u003d N'C:\\Program Files\\Microsoft SQL Server\\MSSQL11.TEST\\MSSQL\\DATA\\test_log.ldf'\n);\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nVerify the database is created in simple recover model (from model database)\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eSELECT \n name, \n recovery_model_desc, \n log_reuse_wait_desc\nFROM sys.databases\nWHERE name \u003d 'Test';\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"41\" src\u003d\"http://1.bp.blogspot.com/-xqhU7G8U4Fk/UZHAq3_wSoI/AAAAAAAACKk/Wu3QAxpU3Fw/s320/changerecoverymodel.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThere are 4 virtual log files (vlf), with the first vlf marked as active (status 2).\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDBCC LOGINFO (Test);\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"64\" src\u003d\"http://3.bp.blogspot.com/-vZ9d9ZmSJ8g/UZHAq0d_oiI/AAAAAAAACKs/xqX08YRU1d8/s320/beforetruncation.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nCreate a table a insert some rows. Run the insert 40 times should have enough transaction to use more than 1 virtual log file.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE TABLE table1\n(\n ID bigint IDENTITY(1,1),\n text1 varchar(4000),\n);\nGO\n\nINSERT INTO table1\nSELECT REPLICATE('H', 4000)\nGO 40\n\nCHECKPOINT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nAs the database is in simple recovery model, checkpoint command is issued to mark older log as reusable (log truncation).\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"64\" src\u003d\"http://1.bp.blogspot.com/-ZivCSAwuZZs/UZHArugg5jI/AAAAAAAACK8/2rc1hhLdiNk/s320/successfultruncation.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe DBCC LOGINFO result shows that the first vlf has been marked as reusable (status 0) and the 2nd vlf as active. The sys.databases dmv we have earlier shows the log_reuse_wait_desc as NOTHING. This is the expected behavior for simple recovery model. Actually, since we have not taken any full backup, this would be the same behavior for full recovery model as well. Let's take a full backup.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eBACKUP DATABASE test\nTO DISK \u003d 'test_backup.bak';\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nNow, execute the insert 60 times.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE Test;\nGO\n\nINSERT INTO table1\nSELECT REPLICATE('H', 4000)\nGO 60\n\nCHECKPOINT;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nNow run the DBCC LOGINFO again. We notice that the 2nd vlf is still marked as active, as well as the 3rd vlf.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"63\" src\u003d\"http://1.bp.blogspot.com/-Qub2CnAbzBE/UZHArmuWRhI/AAAAAAAACK4/KpgHab-qTPk/s320/unsuccessfultruncation.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nThe sys.databases shows that the log_reuse_wait_desc is now LOG_BACKUP. \n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"42\" src\u003d\"http://3.bp.blogspot.com/-ZXTQO5nHZiw/UZHArWfy6VI/AAAAAAAACK0/1theF6_TBlc/s320/simplelogbackup.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nIf we continue to run the insert (e.g. GO 100), the log file grows to 2MB without any log truncation. That's the exact problem we had. The log file just grows and grows.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"102\" src\u003d\"http://1.bp.blogspot.com/-kKV3P6oH2UA/UZHAqzdF6qI/AAAAAAAACKo/1kSeijhzAts/s320/ContinueGrow.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nSince it is waiting for LOG_BACKUP for log to be truncated, why not we just tease it by 'trying' to back up the log. Log backup on simple recovery model should throw an error stating log backup is not allowed while the recovery model is SIMPLE.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eBACKUP LOG test\nTO DISK \u003d 'test_log_backup.trn'\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nGuess what, it ran successfully! What!? The DBCC LOGINFO shows the log has been truncated. Is this a good news? I am not so sure anymore.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"102\" src\u003d\"http://1.bp.blogspot.com/-320AyGQRPGY/UZHArKwi6LI/AAAAAAAACKw/HGYaiCUsGWM/s320/logbackuptruncation.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\nAll these behavior are starting to make me feel like SQL Server has been treating this database as full recovery model the whole time, even we have previously verified the recovery model as simple.\n\u003cbr /\u003e\n\u003cbr /\u003e\nLet's change the recovery model to FULL and back to SIMPLE recovery to see if it does anything. The log_reuse_wait_desc is showing NOTHING. Good. Run a bunch of insert (e.g. GO 100, make sure issue a checkpoint after). The DBCC shows that the truncation is in place. Great!\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cdiv class\u003d\"separator\" style\u003d\"clear: both; text-align: center;\"\u003e\n\u003cimg border\u003d\"0\" height\u003d\"101\" src\u003d\"http://4.bp.blogspot.com/-yfPKec-SdkM/UZHAf_DhhPI/AAAAAAAACKc/cItCxmPGAAY/s320/successfultrucnationafterchange.png\" width\u003d\"320\" /\u003e\u003c/div\u003e\n\u003cbr /\u003e\n\u003cb\u003eObservation\u003c/b\u003e\u003cbr /\u003e\nIf the model database is set to SIMPLE recovery model and user database is created with the simple recovery model from model database template, SQL Server does not truncate its log automatically like it suppose to (after a full backup). It appears that somehow SQL Server is treating it as if it is in full recovery model.\u003cbr /\u003e\n\u003cbr /\u003e\nIt works correctly if database is created with FULL recovery and later changed to SIMPLE recovery model.\u003cbr /\u003e\n\u003cbr /\u003e\nDatabase restored from a SQL 2008 R2 backup to SQL Server 2012 instance in SIMPLE recovery model does not have this problem.\u003cbr /\u003e\n\u003cbr /\u003e\nThe behavior is tested and reproduced on SQL Server 2012 RTM, SP1, and SP1 CU3. I have only tested on these environment.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eMitigation\u003c/b\u003e\u003cbr /\u003e\nChange the recovery model of the affected database to FULL and back to SIMPLE (after at least one backup) appears to solve the problem. If the log has grown too large, you may need to execute a one time DBCC SHRINKFILE command to shrink the log file to an appropriate size. Also for a more permanent solution before Microsoft fix it, set the model database as FULL recovery model and user database only alter to SIMPLE recovery explicitly when required.\u003cbr /\u003e\n\u003cbr /\u003e\nIt appears that the root cause is when a user database is created (not alter after) with simple recovery model, then it has this problem. I blame it on model database as that is the only way to create a user database with the defined recovery model.\u003cbr /\u003e\n\u003cbr /\u003e\nAs the model database by default is set as FULL recovery model, this issue may not be as widespread as I initially thought. However, if you have been creating database or have database created by application (e.g. Sharepoint) on SQL Server 2012 instance with the model database set as Simple recovery model, you may want to inspect the log file size and its log_reuse_wait_desc on sys.databases DMV.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eUpdate\u003c/b\u003e\u003cbr /\u003e\nRight before I was about to submit a Microsoft Connect ticket, I found a \u003ca href\u003d\"https://connect.microsoft.com/SQLServer/feedback/details/765315/when-model-db-is-set-to-simple-recovery-newly-created-databases-are-not-truely-in-simple-recovery\" target\u003d\"_blank\"\u003eticket\u003c/a\u003e\u0026nbsp;has already been created stating the same exact issue. I wish I came across this ticket earlier.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eMore update\u003c/b\u003e\u003cbr /\u003e\nSQL Server 2012 RTM\u0026nbsp;\u003ca href\u003d\"http://support.microsoft.com/kb/2823247\" target\u003d\"_blank\"\u003eCumulative Update 7 (CU7\u003c/a\u003e) released on April 15, 2013 has addressed this issue. Now I really wish I came across this update sooner.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eLatest Update\u003c/b\u003e\u003cbr /\u003e\nSQL Server 2012 SP1 \u003ca href\u003d\"http://support.microsoft.com/kb/2833645\" target\u003d\"_blank\"\u003eCumulative Update 4 (CU4)\u003c/a\u003e\u0026nbsp;released on May 31, 2013 has address this issue. Now, we all are happy."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/2678734092615018269/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/05/sql-server-2012-simple-recovery-model.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2678734092615018269"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/2678734092615018269"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/05/sql-server-2012-simple-recovery-model.html","title":"SQL Server 2012 Simple Recovery Database Log File Explosion"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://2.bp.blogspot.com/-6fAhmvob_tw/UZHCSbCSJoI/AAAAAAAACLo/5gdW46A7euY/s72-c/explosion.jpg","height":"72","width":"72"},"thr$total":{"$t":"1"}},{"id":{"$t":"tag:blogger.com,1999:blog-3846425018755283358.post-7608167342802643470"},"published":{"$t":"2013-04-29T01:03:00.000-05:00"},"updated":{"$t":"2013-04-29T14:23:02.535-05:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"Backup/Recovery"}],"title":{"type":"text","$t":"Got CHECKSUM on Backup? Check Again"},"content":{"type":"html","$t":"If your SQL Server is using backup task created via SQL maintenance plans or some customized backup scripts, and you are expecting it to performs backup with CHECKSUM operation, you may want to review the backup task.\u003cbr /\u003e\n\u003ca name\u003d'more'\u003e\u003c/a\u003e\u003cbr /\u003e\nBackup database task from maintenance plans does not have the CHECKSUM option. Someone may argue that if the COMPRESSION is enabled, CHECKSUM is the default behavior for a compress backup.\u003cbr /\u003e\n\u003cbr /\u003e\nHere is the excerpt from \u003ca href\u003d\"http://msdn.microsoft.com/en-us/library/ms186865.aspx\" target\u003d\"_blank\"\u003eBook Online (BOL)\u003c/a\u003e\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ci\u003eCHECKSUM\n\u003cbr /\u003e\u003cbr /\u003e\nSpecifies that the backup operation will verify each page for checksum and torn page, if enabled and available, and generate a checksum for the entire backup. This is the default behavior for a compressed backup.\u003c/i\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nIs CHECKSUM option really enabled by default if COMPRESSION option is enabled? Before we conduct the test, let us cover some background of CHECKSUM.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nThe CHECKSUM option on the backup operation enables a checksum to be generated for the entire backup, and verify each database page for checksum and torn page. This option is highly recommended to allow early detection of page corruption during the backup as well as verifying backup for any corruption when performing database restore (or RESTORE VERIFYONLY).\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nPlease keep in mind that the CHECKSUM option only verify the database page if the particular database page contains checksum or the torn bits. In order for a page to contain this information,\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nFirst - The database needs to have its PAGE_VERIFY setting configured with either CHECKSUM or TORN_PAGE_DETECTION enabled.\u003cbr /\u003e\nSecond - SQL Server Database Engine calculates checksum or torn bits on a page and stores it on page header only when the page is written to disk.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nWith these understanding, let's do some test.\u003cbr /\u003e\n\u003cbr /\u003e\nFirst, create the database with its PGE_VERIFY setting configured as CHECKSUM. Create a table and insert an record. Issues CHECKPOINT command to ensure the page is written to the disk.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eCREATE DATABASE TEST;\nGO\n\nALTER DATABASE TEST\nSET PAGE_VERIFY CHECKSUM;\nGO\n\nUSE TEST;\nGO\n\nCREATE TABLE Table1\n(\n  ID tinyint IDENTITY(1,1),\n  Name varchar(10)\n);\nGO\n\nINSERT Table1\nSELECT 'TEST123';\nGO\n\nSELECT ID, Name\nFROM Table1;\nGO\n\n-- To ensure the data page is written to the disk\nCHECKPOINT;\nGO\n\n-- Drop the data page in buffer pool so that data will be pulled from the disk on next inquiry.\nDBCC DROPCLEANBUFFERS\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nSecond, examine the data page with \u003ca href\u003d\"http://www.sqlskills.com/blogs/paul/inside-the-storage-engine-using-dbcc-page-and-dbcc-ind-to-find-out-if-page-splits-ever-roll-back/\" target\u003d\"_blank\"\u003eDBCC IND and DBCC PAGE\u003c/a\u003e for the table and the record inserted, and make sure checksum has been generated for the page.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eDBCC IND ('TEST', 'Table1');\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cimg border\u003d\"0\" height\u003d\"30\" src\u003d\"http://3.bp.blogspot.com/-TYGgfZg8tYY/UX4CrkP1XDI/AAAAAAAACG4/a-pkfmXA5q8/s400/dbccind.PNG\" width\u003d\"480\" /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003e-- To enable output for DBCC command.\nDBCC TRACEON (3604);\nGO\nDBCC PAGE ('TEST', 1, 230, 3);\nGO\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cimg border\u003d\"0\" height\u003d\"132\" src\u003d\"http://4.bp.blogspot.com/-40jVAo5_8e8/UX4Da_nZBBI/AAAAAAAACHE/3gp9TgmAK1k/s400/dbccpage.PNG\" width\u003d\"400\" /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nm_flagBits \u003d 0x8200 shows that the page has a checksum stored on it.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nNext step, turn database off. Use \u003ca href\u003d\"http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm\" target\u003d\"_blank\"\u003eHex Editor xvi32\u003c/a\u003e\u0026nbsp;to edit 'TEST123' record to 'TEST124' and save the new data to emulate corruption.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE master;\nGO\n\nALTER DATABASE TEST\nSET OFFLINE\nWITH ROLLBACK IMMEDIATE;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cimg border\u003d\"0\" height\u003d\"100\" src\u003d\"http://3.bp.blogspot.com/-CedCOYoixvE/UX4ERSYxKxI/AAAAAAAACHQ/yHXF2JjJ1F0/s320/xvi32edit.PNG\" width\u003d\"480\" /\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nNow it is time to check if the database engine detect corruption error when the page is read. Turn database on. Select from table encounter corruption error.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eALTER DATABASE TEST\nSET ONLINE;\nGO\n\u003c/pre\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eUSE TEST;\nGO\n\nSELECT ID, Name\nFROM Table1;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nError below encountered.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\u003cspan style\u003d\"color: red;\"\u003eMsg 824, Level 24, State 2, Line 2\nSQL Server detected a logical consistency-based I/O error: incorrect checksum (expected: 0xf4caaa80; actual: 0x74caaa83). It occurred during a read of page (1:230) in database ID 5 at offset 0x000000001cc000 in file 'C:\\Program Files\\Microsoft SQL Server\\MSSQL11.MSSQLSERVER\\MSSQL\\DATA\\TEST.mdf'.  Additional messages in the SQL Server error log or system event log may provide more detail. This is a severe error condition that threatens database integrity and must be corrected immediately. Complete a full database consistency check (DBCC CHECKDB). This error can be caused by many factors; for more information, see SQL Server Books Online.\n\u003c/span\u003e\u003c/code\u003e\n\u003cbr /\u003e\n\u003cbr /\u003e\nTake a backup with compression without explicitly specify CHECKSUM option to see if any error is encountered.\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eBACKUP DATABASE TEST\nTO DISK \u003d 'TEST_backup_compress_nochecksum.bak'\nWITH COMPRESSION;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\nBACKUP DATABASE successfully processed 291 pages in 0.581 seconds (3.901 MB/sec).\n\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nNO! Backup operation complete without any error! Inspect the backup header to verify if checksum is generated for the backup.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eRESTORE HEADERONLY\nFROM DISK \u003d 'TEST_backup_compress_nochecksum.bak';\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003cimg border\u003d\"0\" height\u003d\"30\" src\u003d\"http://3.bp.blogspot.com/-UYK-FbvCuLw/UX4G-J5bDYI/AAAAAAAACHs/_WSKY9IVKbs/s320/restoreheaderonly.PNG\" width\u003d\"400\" /\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nNO!\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nNow, backup the database and specify CHECKSUM explicitly with, and also without compression.\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eBACKUP DATABASE TEST\nTO DISK \u003d 'TEST_backup_compress_checksum.bak'\nWITH COMPRESSION, CHECKSUM;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\nAnd then also,\n\n\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cpre class\u003d\"brush:sql\"\u003eBACKUP DATABASE TEST\nTO DISK \u003d 'TEST_backup_nocompress_checksum.bak'\nWITH CHECKSUM;\nGO\n\u003c/pre\u003e\n\u003cbr /\u003e\n\u003ccode\u003e\u003cspan style\u003d\"color: red;\"\u003e\nMsg 3043, Level 16, State 1, Line 1\nBACKUP 'TEST' detected an error on page (1:230) in file 'C:\\Program Files\\Microsoft SQL Server\\MSSQL11.MSSQLSERVER\\MSSQL\\DATA\\TEST.mdf'.\nMsg 3013, Level 16, State 1, Line 1\nBACKUP DATABASE is terminating abnormally.\u003c/span\u003e\u0026nbsp;\u003c/code\u003e\u003cbr /\u003e\n\u003cbr /\u003e\nCorruption error encountered during backup operation! Perhaps this is the only time I am excited about corruption error.\u003cbr /\u003e\n\u003cbr /\u003e\n\u003cb\u003eObservation\u003c/b\u003e\u003cbr /\u003e\nWithout explicitly specifying CHECKSUM option, backup with or without compression does not generate checksum for the backup, and does not verify page checksum.\u0026nbsp;\n\n\u003cbr /\u003e\n\u003cbr /\u003e\nSo, bad news for backup task in SQL maintenance plans. If you are expecting checksum to be generated for backup as well as page checksum verification during backup, you may need to use customized backup script that explicitly specify the CHECKSUM option in the backup command."},"link":[{"rel":"replies","type":"application/atom+xml","href":"https://www.travisgan.com/feeds/7608167342802643470/comments/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https://www.travisgan.com/2013/04/got-checksum-on-backup-check-again.html#comment-form","title":"0 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7608167342802643470"},{"rel":"self","type":"application/atom+xml","href":"https://www.blogger.com/feeds/3846425018755283358/posts/default/7608167342802643470"},{"rel":"alternate","type":"text/html","href":"https://www.travisgan.com/2013/04/got-checksum-on-backup-check-again.html","title":"Got CHECKSUM on Backup? Check Again"}],"author":[{"name":{"$t":"Travis"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"35","height":"35","src":"//www.blogger.com/img/blogger_logo_round_35.png"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"http://3.bp.blogspot.com/-TYGgfZg8tYY/UX4CrkP1XDI/AAAAAAAACG4/a-pkfmXA5q8/s72-c/dbccind.PNG","height":"72","width":"72"},"thr$total":{"$t":"0"}}]}});