High CPU Usage of cman's listener process

(Doc ID 2329048.1)

Last updated on NOVEMBER 26, 2017

Applies to:

Oracle Net Services - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

When running TNS Listener in cman's home, the usage of cpu is increased higher than 80% for a period of time.

After this is caused, pstack for TNS Listener shows the hang at ons_cond_timedwait_sec():

 

Cause

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