What is lock escalation?
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What is lock escalation?
by Micheal Tue Jan 12, 2010 8:41 pm
Lock escalation is the process of converting a lot of low level locks (like row locks, page locks) into higher level
locks (like table locks). Every lock is a memory structure too many locks would mean, more memory being
occupied by locks. To prevent this from happening, SQL Server escalates the many fine-grain locks to fewer
coarse-grain locks. Lock escalation threshold was definable in SQL Server 6.5, but from SQL Server 7.0 onwards
it's dynamically managed by SQL Server.
locks (like table locks). Every lock is a memory structure too many locks would mean, more memory being
occupied by locks. To prevent this from happening, SQL Server escalates the many fine-grain locks to fewer
coarse-grain locks. Lock escalation threshold was definable in SQL Server 6.5, but from SQL Server 7.0 onwards
it's dynamically managed by SQL Server.
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