Increase java heap space for SOA Gateway

One problem you can face when you are working with a webservice that returns thousands of rows is that you will get memory problems. In the webservice SOAP response you will see something like SERVICE ERROR.

When you go into eBusiness Suite and look in the SOA Monitor you will see a java exception:

Error description SYSTEM_ERROR
Error details java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOfRange(Arrays.java:3209)
at java.lang.String.<init>(String.java:216)
at java.lang.StringBuilder.toString(StringBuilder.java:430)....

To fix this problem we need to increase the java heap space for the JVM oafm (the default value is 256MB). The below instructions will set it to 1GB.

1. Open $ORA_CONFIG_HOME/10.1.3/opmn/conf/opmn.xml
2. Find the row  that starts with <process-type id="oafm" module-id="OC4J" status="enabl...
3. Under start-parameters change:
   - <data id="java-options" value="-server -verbose:gc -Xmx256M... to <data id="java-options" value="-server -verbose:gc -Xmx1024M...
4. Under stop-parameters change:
   - <data id="java-options" value="-server -verbose:gc -Xmx256M... to <data id="java-options" value="-server -verbose:gc -Xmx1024M...
5. Restart the opmn
   $ADMIN_SCRIPTS_HOME/adopmnctl.sh stopall
   $ADMIN_SCRIPTS_HOME/adopmnctl.sh startall

Sources

• Note 1073270.1: Timeout Errors when Deploying Web Services
• Note 362851.1: Guidelines to setup the JVM in Apps Ebusiness Suite 11i and R12
• Note 567551.1: Configuring various JVM tuning parameters for Oracle E-Business suite 11i and R12
• How To Identify/Determine The Maximum JVM Heap Size For OC4j Components In R12 / 10gAS
• How To Change Java Heap Size In R12 To Avoid Java.Lang.OutOfMemoryError: Java Heap Space Error?