Comments on: The sp_getapplock secret http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/ A blog on .Net and SQL Server Tue, 31 Jan 2012 14:44:35 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Greg Martin http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/comment-page-1/#comment-15586 Greg Martin Thu, 09 Dec 2010 06:20:03 +0000 http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/#comment-15586 Clay, I think Yair meant you didn't call sp_releaseapplock() after the COMMIT which might appear necessary at first glance at sp_getapplock(). The reason it's not is that an applock has by default transaction scope and is released automatically when the transaction is committed or rolled back. Had your code included the parameter @LockOwner='Session' then you would have had to explicitly call sp_releaseapplock(). Greg Clay,

I think Yair meant you didn’t call sp_releaseapplock() after the COMMIT which might appear necessary at first glance at sp_getapplock().

The reason it’s not is that an applock has by default transaction scope and is released automatically when the transaction is committed or rolled back.

Had your code included the parameter @LockOwner=’Session’ then you would have had to explicitly call sp_releaseapplock().

Greg

]]> By: rob towne http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/comment-page-1/#comment-15454 rob towne Mon, 28 Jun 2010 21:10:37 +0000 http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/#comment-15454 Clay, huge props, man. I was needing something just like this and have been going crazy trying some different workarounds. Thanks so much for sharing this.. Robert Clay, huge props, man.
I was needing something just like this and have been going crazy trying some different workarounds. Thanks so much for sharing this..

Robert

]]> By: Clay Lenhart http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/comment-page-1/#comment-15407 Clay Lenhart Mon, 08 Mar 2010 22:03:45 +0000 http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/#comment-15407 Yair, I'm not sure how to answer your question. You could say that "releasing" the transaction is the same thing as "committing" the transaction. The way transactions work, "BEGIN TRAN" is committed with "COMMIT TRAN". Let me know if this doesn't answer your question. Yair, I’m not sure how to answer your question. You could say that “releasing” the transaction is the same thing as “committing” the transaction.

The way transactions work, “BEGIN TRAN” is committed with “COMMIT TRAN”.

Let me know if this doesn’t answer your question.

]]> By: Yair http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/comment-page-1/#comment-15404 Yair Fri, 05 Mar 2010 14:47:04 +0000 http://clay.lenharts.net/blog/2008/01/28/the-sp_getapplock-secret/#comment-15404 Hi, Why don't you release the transaction after the commit? Yair Hi,

Why don’t you release the transaction after the commit?

Yair

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