High 'Latch Free' Events / Contention with Enqueues Latch associated with DX requests (Doc ID 369586.1)

Last updated on MAY 15, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.3 [Release 10.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 10-Dec-2012***


Symptoms

X/A used

Top wait event is 'latch free'

Latch Sleep Breakdown shows high number of gets associated with 'enqueues' latch

Enqueue activity is associated with DX enqueue as observed via : v$enqueue_statistics

Cause

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