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how to lock and unlock a table exclusively?

Posted on 2012-04-05
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Last Modified: 2012-04-05
hello group,

I have gone over few articles and samples on the web and learned something about locking a table and it types. However, not sure why I cannot find a solid answer on how to unlock a table.

my assumption was that unlock must be the answer but it doesn't work in sql server (I'm using 2008 R2). so far I have locked a table (exclusively since need to avoid any read/write on table):

USE DB1
GO
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
GO
BEGIN TRANSACTION
SELECT 1 FROM test WITH (tablockx)
GO

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eventually I had to kill the server process id after finding process id with kill command. now, question is what is the best and graceful to exit from lock state?

Thanks.
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Question by:akohan
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Expert Comment

by:wdosanjos
ID: 37813019
You should COMMIT or ROLLBACK the transaction.
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Author Comment

by:akohan
ID: 37813022
I tried and noticed COMMIT will work properly but is this a good and optimized approach (considering code above and commit)?

Regards.
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LVL 23

Accepted Solution

by:
wdosanjos earned 400 total points
ID: 37813030
Yes, that's the only approach to release the locks (i.e. issue a COMMIT or a ROLLBACK).
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Author Closing Comment

by:akohan
ID: 37813062
Thank you!
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