My Oracle Support Banner

Garbage Collection on Java Process Shows Error "concurrent mode failure" (Doc ID 551515.1)

Last updated on OCTOBER 09, 2020

Applies to:

Oracle Containers for J2EE - Version to [Release AS10gR3]
Information in this document applies to any platform.


Find that an application gets very slow when garbage collection cannot finish in time. It starts retrying and this causes the instance to slow down. Java garbage collection parameters have already been tweaked, and for garbage collection reporting, also "-verbose:gc -XX:+PrintGCDetails -XX:+PrintGCTimeStamps" are set. The logfile / output file of OC4J shows following entry:


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

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

In this Document

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