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POSQL hangs when executed as SP but is fine as SQL
 

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    <p>Greetings, I have been analyzing a problem with a delete stored procedure. The procedure simply performs a cascading delete of a certain entity.</p> <p>When I break the SP out into SQL in the query editor it runs in approx. 7 seconds, however, when the SP is executed via EXEC SP it takes over 1 minute to execute.</p> <p>I have tried the following with no luck:</p> <ul> <li>Dropped the SP and then recreated it using WITH RECOMPILE </li> <li><p>Added SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED</p></li> <li><p>The SQL runs in the editor with many concurrent connections without issue.</p></li> <li>The EXEC Procedure hangs with or without concurrent connections</li> </ul> <p>The procedure is similar to:</p> <pre><code> ALTER PROCEDURE [dbo].[DELETE_Something] ( @SomethingID INT, @Result INT OUT, @ResultMessage NVARCHAR(1000) OUT )--WITH RECOMPILE--!!!DEBUGGING AS --SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED--!!!DEBUGGING SET @Result=1 BEGIN TRANSACTION BEGIN TRY DELETE FROM XXXXX --APPROX. 34 Records DELETE FROM XXXX --APPROX. 227 Records DELETE FROM XXX --APPROX. 58 Records DELETE FROM XX --APPROX. 24 Records DELETE FROM X --APPROX. 14 Records DELETE FROM A -- 1 Record DELETE FROM B -- 1 Record DELETE FROM C -- 1 Record DELETE FROM D --APROX. 3400 Records !!!HANGS FOR OVER ONE MINUTE TRACING THROUGH SP BUT NOT SQL GOTO COMMIT_TRANS END TRY BEGIN CATCH GOTO ROLLBACK_TRANS END CATCH COMMIT_TRANS: SET @Result=1 COMMIT TRANSACTION RETURN ROLLBACK_TRANS: SET @Result=0 SET @ResultMessage=CAST(ERROR_MESSAGE() AS NVARCHAR(1000)) ROLLBACK TRANSACTION RETURN </code></pre>
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