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 laterOracle 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 |