R12 Configurator Performance issues and 100% CPU (Java: Out Of Memory)

(Doc ID 1578239.1)

Last updated on DECEMBER 14, 2017

Applies to:

Oracle Configurator - Version 12.1.3 and later
Information in this document applies to any platform.


Oracle Configurator performs poorly (Java: Out of memory)

When using the Oracle Configurator observing strange behaviour of the oacore java process.
Customer has defined 5 oacore java processes in the OC4J container with a max heap space of 2GB (the jdk is 32-bit).
The load increases when the Java process consumes 100% CPU and is finally killed by opmn.

In the oacorestd.err is seen: java.lang.OutOfMemoryError: GC overhead limit exceeded
 Tried adding the paramter -XX:-UseGCOverheadLimit to startup, and paramter
-XX:-UseGCOverheadLimit , Both didnt help

The CPU still shows at100%

(Five oacore JVMs, 1 forms JVM and one oafm JVM (was earlier onlyl 2 oacore
JVM's). 24 cores.
and EBS users Average 45.84 Max 108
Concurrent Requests Average 47.31 Max 140

MaxPermSize is set to 512MB


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