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Massive Row Cache Locks (Doc ID 2359588.1)

Last updated on JANUARY 18, 2023

Applies to:

Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Customer running 4 node RAC DB with release 11.2.0.4.

1) In the alert log of one of the instances there was flood of below messages :
">>> WAITED TOO LONG FOR A ROW CACHE ENQUEUE LOCK"

2) Too many "ora_jxxx" processes were invoked on that Instance.

 

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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