My Oracle Support Banner

High CPU Usage of cman's listener process (Doc ID 2329048.1)

Last updated on NOVEMBER 26, 2017

Applies to:

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


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():



To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.