MSSQL Killing database connection

There can be times that you need to kill all connections to a database so that you can perform emergency maintenance. Or for some other reason you need to disconnect the current people who are logged in.

So here is a little stored procedure that will do just that.

CREATE PROCEDURE [dbo].[KillConnectionsdb] @dbname varchar(MAX)
AS
        DECLARE @spid int
        DECLARE @sql varchar(MAX)

        DECLARE cur CURSOR FOR
                SELECT spid FROM sys.sysprocesses P
                        JOIN sys.sysdatabases D ON (D.dbid = P.dbid)
                        WHERE LTRIM(RTRIM(D.Name)) = @dbname
                        AND P.spid != @@SPID

        OPEN cur

        FETCH NEXT FROM cur
                INTO @spid

        WHILE @@FETCH_STATUS = 0
        BEGIN
                PRINT CONVERT(varchar, @spid)

                SET @sql = 'KILL ' + RTRIM(@spid)
                PRINT @sql
                EXEC(@sql)

                FETCH NEXT FROM cur
                        INTO @spid
        END

        CLOSE cur
        DEALLOCATE cur

GO

It is really simply to use.

Just call the stored procedure with in the following way where 'Testing' happens to be the name of the database you want to kill off all the connections.

EXEC KillConnectionsdb @dbname = 'Testing'

Note: this stored procedure will avoid attempting to kill its own connection in the process.



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Last Modified: 08 March 2017

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