Refreshing the Select Databases window, the database status will be changed to Meet Prerequisites, as shown below: #Sql studio take offline fullTo fix that issue, change the database recovery model from Simple to Full, from the Options tab of the database properties window, then take a Full backup from that database, as shown below: #Sql studio take offline freeWhere the database should be configured with a Full recovery model and a Full or Differential backup should be performed on that database.Īlso, the wizard warns you to schedule a transaction log backup for that database after changing the recovery model to Full, to truncate the transaction log file automatically and prevent running that transaction log file out of free space. You will then need to schedule log backups on the database. Set the Recovery Model database property to Full and perform a full or differential database backup on the database. To be added to an availability group, this database must be set to the full recovery model. Otherwise, the database cannot be selected from the databases lists, as shown in the error message below: Before adding the database, the database should pass the pre-requisites validation check. In the earlier steps of the New Availability Group wizard, you will be asked to specify the database(s) that will participate in the Always on Availability Group. You can easily enable the Always on Availability Group feature, by opening the SQL Server Configuration Manager console, browse the SQL Server Services tab then right-click on the SQL Server Database Engine service and choose the Properties option.įrom the opened SQL Server Properties window, move to the Always on High Availability tab and check the checkbox beside the Enable Always on Availability Group, taking into consideration that this change requires restarting the SQL Server service to take effect, as shown below: It is clear from the error message that, the AlwaysOn Availability Groups feature should be enabled on each SQL Server instances that participate in the Always on Availability Group site, before creating that site. #Sql studio take offline windowsEnabling Always On Availability Groups may require that the server instance is hosted by a Windows Server Failover Cluster (WSFC) node. To enable this feature, open the SQL Server Configuration Manager, select SQL Server Services, right-click on the SQL Server service name, select Properties, and use the Always On Availability Groups tab of the Server Properties dialog. The Always On Availability Groups feature must be enabled for server instance 'SQL1' before you can create an availability group on this instance. Always on Availability Group Feature Not EnabledĪssume that, while trying to create a new Always on Availability Group, from the Always On High Availability node, under the Object Explorer of the SQL Server Management Studio, you faced the error message below: This will terminate connections, rollback their transactions, and allow only privileged users to connect.In this article, we will discuss several issues that you may face while creating, configuring or maintaining an Always on Availability Group site.īefore going through this article, it is recommended to read the previous article, Setting up and Configuring Always on Availability Group in SQL Server, to be familiar with the Always on Availability Group concept and the New Availability Group wizards shown in this article. If you need to “kill” the connections in order to do your work, try this: alter database set restricted_user with rollback immediate So one way is TO CHECK the drop all active connections in the UI. It means that some connection is still active, due to some user or client application still accessing the DB. So went back to the previous machine and cancelled the operation. Opened another session from another machine and ran to check for active connections: With the SQL management studio UI, kept the defaults, started with the first one and it hanged. Today for the clean-up purpose we decided to take couple of databases offline.
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