Expert Advice

KDP_LOCK_ESCAL_EXCL_Warning

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Situation Description

Lock escalation is the act of releasing a large number of page, row, LOB, or XML locks held by an application process on a single table or table space, to acquire a table or table space lock, or a set of partition locks of mode X.

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Suggested Actions

Determine how often lock escalation has occurred and whether it has caused timeouts or deadlocks. As an estimate, if 25% of your lock escalations cause timeouts or deadlocks, then escalation is not effective for you. In that case, alter the table to increase LOCKMAX, and thus decrease the number of escalations. Alternatively, if lock escalation is a problem, use LOCKMAX 0 to disable lock escalation.

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