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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 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
- 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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