Kill connections for a user

This can be really useful if you need to kill all the connections by a user. An example might be a out of control web application which is running under a certain user. Or because you just want to abort a single users queries because they have left an open transaction and a pile of tables locked for example.

CREATE PROCEDURE [dbo].[KillConnectionsUser] @username 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)
                        JOIN sys.sysusers U ON (P.uid = U.uid)
                        WHERE loginame = @username
                        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 'Test' happens to be the name of the user you want to kill off.

Here is a q quick example.

EXEC KillConnectionsUser @username = 'Test'

Note: If you use this on your own username it will not attempt to kill its self
in the process as I put a protection into it to prevent that issue from occurring.



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Last Modified: 08 March 2017

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