To do that, we must use the ROLLBACK IMMEDIATE termination clause. Before changing the access mode of the database, we must close To change the access mode of the AdventureWorks2017.

We can use ALTER DATABASE SET SINGLE_USER statement to change the access mode of the user database to SINGLE_USER. (Single-User) is specified with the database name in SQL Server Management studio. The access mode of the AdventureWorks2017 database is changed to SINGLE_USER. Click on OK to close all active user connections and change the access mode. You will receive a message stating that we must close all open connections before changing the access mode. Click on Restrict Access drop-down box and In the database properties dialog box, click on Options. To change the database mode using SSMS, open SQL Server Management Studio Connect to the database engine Expand Databases Right-click on AdventureWorks2017. We change the access mode of the database to a single user by using any of the following methods:Ĭhanging the database property in SQL Server Management Studio (SSMS)Ĭhange Database Property in SQL Server Management Studio (SSMS) To execute the ALTER DATABASE SET SINGLE_USER statement requires ALTER DATABASE permission.ĭifferent methods to access the mode of the database to a SINGLE_USER This approach is considered the cleanest method to change the access mode because it does not roll back any transaction By default, sample databases and sample code are not installed as part of SQL Server. It waits for a specified time, and if the transaction does not complete, the ALTER DATABASE statement fails. Installing the AdventureWorks Samples in Microsoft SQL Server 2012. WITH NO_WAIT: This option does not rollback any transaction but, it waits till all transaction completes.When you are rolling back a long-running transaction, the command takes more time to complete, so make sure you check all long-running transactions before executing the command This option does not wait for the transaction to complete. WITH ROLLBACK IMMEDIATE: This option will rollback all the open transactions.To override this behavior, we can use any of the following termination options. When you run the ALTERĭATABASE SET SINGLE_USER statement, it does not complete because the users are still connected to it. When you are overwriting a database using a backup or trying to detach any database, you might want to change the user access mode to SINGLE_USER to make sure that new users can not connect to the database. However, the users that are already connected to the database do not get disconnected. The new user cannot connect to the database. When any database is in single-user mode, The ALTERĭATABASE SET SINGLE_USER is used to put the database in single-user mode. In the new window, in the File Name text box, provide a filename for your copy of the Northwind database. A new window opens with a description of the Northwind database. In this article, we are going to explore the purpose of the ALTER DATABASE SET SINGLE_USER statement. Enter Northwind in the Search for Online Templates box, and then select Enter.

Sample adventureworks database 2012