Out of Memory Error in R12

OUT OF MEMORY ERROR IN R12

Issue :

While developers working, the applcation page showing error message like “ 500 Internal Server Error 12/08/04 17:43:38.489 html: JspServlet: unable to dispatch to requested page: Exception:java.lang.OutOfMemoryError: PermGen space “

Solution :

cd $INST_TOP/ora/10.1.3/opmn/conf

vi opmn.xml

Edit the word after coming below line

<process-type id="oacore" module-id="OC4J" status="enabled" working-dir="$ORACLE_HOME/j2ee/home">

change the value -XX:MaxPermSize=160 to 512 in both <category id=start-parameters and stop-parameters>

Must follow the following URL

Ref : http://oracamp.com/how-change-java-heap-size-r12-avoid-javalangoutofmemoryerror-java-heap-space-error