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High SYS CPU Usage ON LMS Thread (SCMN/CR00/RS01) During High Workload (Doc ID 2707048.1)

Last updated on MAY 25, 2021

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


ON 6-node 19.5 RAC On Red Hat Enterprise 7, it's observed that high SYS CPU is utilized by lms/scmn process/thread during high workload. for example, the issue can be reproduces by below test:

The issue not only happens on standby, it can also happen on primary or any other RAC environments during high workload.

High sys CPU can be observed on LMS/SCMN from top command.


 No changes, new created environment.


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