Slow Performance Featuring Contention on "latch free" with "Real-time plan statistics latch" Having the Most Sleeps and Causing High Operating System Activity
(Doc ID 2030320.1)
Last updated on OCTOBER 31, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
- Slow performance
- High contention on "latch free" seen in AWR report
- High Operating System (OS) activity seen associated with this instance:
- "Latch Sleep Breakdown" section of AWR shows that "Real-time plan statistics latch"
- Real-Time SQL Monitoring is being used on the instance
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