enq: RO - Fast Object Reuse Events Since Upgrading To 19c
(Doc ID 2783009.1)
Last updated on AUGUST 19, 2021
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206.0 and later
Information in this document applies to any platform.
After the upgrade to 19c, there are lots of "enq: RO - fast object reuse" wait events:
- Version 220.127.116.11.0
- AWR reports show up to 20% of DB time for "enq: RO - fast object reuse"
- No drop/truncate table statements are executed
- Active session history always shows the Checkpoint Process as blocker
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