SQL Server 2005 - closing sleeping connections

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 + ']';