Question

I seem to have an app on my Dev server that has lots of open connections (they should be there, but some bad data layer was used to open them, that forgot to close them). I just want them closed so I can keep other apps running on the server. How can I force all the connections to close?

Answer 1

Use the following script to kill inactive sessions from a specific host / login. You could use it from a scheduled job, of course your priority should be to fix your app tier.

SET NOCOUNT ON;  DECLARE @host VARCHAR(50), @login NVARCHAR(128);  SET @host = 'fooHost'; --NULL to kill sessions from all hosts. SET @login = 'fooLogin';  DECLARE @cmd NVARCHAR(255); DECLARE @possition INT, @total INT, @selSpid SMALLINT; DECLARE @spidInfo TABLE (     [id] INT IDENTITY(1,1),     spid SMALLINT,     loginame NVARCHAR(128) );  INSERT @spidInfo(spid, loginame) SELECT session_id, login_name  FROM sys.dm_exec_sessions WHERE is_user_process = 1 AND [status] = 'sleeping' AND      login_name = @login AND [host_name] = COALESCE(@host, [host_name]);  SELECT @total = @@IDENTITY, @selSpid = 0, @possition = 0;  WHILE @possition < @total     BEGIN         SELECT TOP 1 @selSpid = spid, @possition = [id]         FROM @spidInfo         WHERE [ID] > @possition          SET @cmd = N'KILL ' + CAST(@selSpid AS NVARCHAR(10));         EXEC sp_executesql @cmd;         PRINT 'SessionId = ' + CAST(@selSpid AS NVARCHAR(10)) + '[' + @login +              '] killed by ' + system_user + ' at ' + CAST(GETDATE() AS VARCHAR(50));     END;  IF (@total = 0)     PRINT 'No sessions owned by user ' + '[' + @login + ']';