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SQL Server 2008 Deadlock

Posted on 2014-01-15
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How to identify dead lock in SQL 2008 ? How do I know whether a dead lock occur in production environment ? Will the SQL server slow down the performance ?
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Question by:AXISHK
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Assisted Solution

by:Koen Van Wielink
Koen Van Wielink earned 800 total points
ID: 39784639
Try running the SP_WHO and SP_WHO2 stored procedures. They will show you blocked and blocked by columns that correspond with a session ID. Look up the session ID to see who is locking the database.
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by:mike706
ID: 39784704
You can also use the activity monitor to see this information.

You can find more information about deadlocks here http://technet.microsoft.com/en-us/library/ms177433%28v=sql.105%29.aspx

Deadlocks are a performance problem because they can prevent 2 or more processes from being able to process data.  A deadlock chain can occur and impact hundreds of spids based on the data access patterns, number of users, object dependencies, etc.
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Author Comment

by:AXISHK
ID: 39791879
Run 'sp_who" and 'sp_who2' but I can't find the 'blocked" or 'blocked  by" column.  Do I make something wrong ?

Tks
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by:
mike706 earned 1200 total points
ID: 39792001
It should look something like this.
sp_who2
sp-who2.jpg
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Author Closing Comment

by:AXISHK
ID: 39793194
Tks
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