Excessive CF enqueue when performing many parallel NOLOGGING DML
(Doc ID 1380939.1)
Last updated on AUGUST 24, 2021
Applies to:
Oracle Database - Enterprise Edition - Version 10.2.0.3 to 11.2.0.2 [Release 10.2 to 11.2]Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
Symptoms
You are seeing sessions waiting for 'enq: CF - contention' or
this wait event is appearing in the top 5 wait events in an AWR or statspack report.
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |