![]() ![]() ![]() Details on various database status in Microsoft Docs. Blog reader Joyesh Mitra recently left a comment to one of my very old posts about SQL SERVER 2005 Take Off Line or Detach Database, which I have written focusing on taking the database offline.Difference between detaching, taking offline and moving to emergency mode of a database.If you want to view the active connections on a database, read my post View active connections for each Database in SQL Server. You usually drop connections when you are planning to take the database offline or need to immediately deal with a maintenance issue. follow the below statement to bring back the database online from emergency state.ĪLTER DATABASE SET ONLINE Here’s a simple script to drop all active connections to the SQL Server Database. ![]() Also, the object explorer shows database as offline as shown below. If we query sys.databases view the database information can be seen as shown in above snapshot. To take a database out of emergency mode to normal online mode use the ALTER DATABASE statement along with SET ONLINE options. ALTER DATABASE AdventureWorks2014 SET OFFLINE WITH ROLLBACK IMMEDIATE The above query takes database AdventureWorks2014 offline. Take Database Out Of Emergency Mode To Online Once the database is set to emergency, the database icon before the database name in SSMS object explorer turns into red.ĪLTER DATABASE SET EMERGENCYĪLTER DATABASE SET EMERGENCY WITH ROLLBACK IMMEDIATEĪLTER DATABASE SET EMERGENCY WITH ROLLBACK AFTER 15 SECONDS Only when the new file data location is taken into use, is the vault offline for the duration of taking the new location into use. This will terminate connections, rollback their transactions, and take the database offline.To move a database to emergency mode use the ALTER DATABASE statement along with SET EMERGENCY option.Use one of the below statements to move the database to emergency state. This is another solution: alter database set offline with rollback immediate Once the database is set to emergency, the database icon before the database name in SSMS object explorer turns into red. Once you have finished, you return to multi-user mode with this: alter database set multi_user To move a database to emergency mode use the ALTER DATABASE statement along with SET EMERGENCY option.Use one of the below statements to move the database to emergency state. It results in queries taking longer time to execute. This will terminate connections, rollback their transactions, and allow only privileged users to connect. When a database is closed, SQL Server will flush the data cache and execution plans from the Server Memory. Within the 'All Tasks' or 'Tasks' submenu is the 'Take Offline. This causes a context-sensitive menu to appear. If you are using either SQL Server Management Studio or Enterprise Manager, you can simply right-click the name of a database. If you need to “kill” the connections in order to do your work, try this: alter database set restricted_user with rollback immediate The easiest way to take a SQL Server database off-line is using the graphical user interface tools provided. You will see who is accessing your databases. To check for active connections, open a new query and paste this (no need to change anything): SELECT db_name(dbid) as DB, It can happen though, that the Taking offline window appears and seems to hang forever, until you have to dismiss it and cancel the operation. It means that some connection is still active, due to some user or client application still accessing the DB. This is fairly simple: open Server Management Studio, go to the list of databases, right-click on the right DB, and select Tasks / Take offline from the menu. It can happen though, that the “Taking offline” window appears and seems to hang forever, until you have to dismiss it and cancel the operation. This is fairly simple: open Server Management Studio, go to the list of databases, right-click on the right DB, and select “Tasks / Take offline” from the menu. Sometimes it is necessary to take offline a database for some reason (backup, restore, server maintenance, whatever). ![]()
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