Tuesday, June 14, 2011

Object Or Row Lock Contention Wait

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Much of the objects (table and indexes) I/O time is spent waiting for a lock on the object specified in the Object column.
Object Or Row Lock Contention findings

Description
What to do next
Examine the statement in the Activity workspace.
Advice
To reduce the lock wait for the object, perform one of the following:
n   Check to see if the lock appears in the Current workspace. If so, examine the lock chain to identify which statement is holding the lock.
n   Try to identify the locking statement in the Activity workspace using smaller time frames that match the lock periods. Focus on the locked table and associated statements. The DML statements (and update queries) that are NOT waiting for locks should be the immediate suspects.


  
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