Troubleshooting
Problem
If you migrate to IBM® WebSphere® Application Server Version 7.0 on a Sun Solaris or an HP-UX operating system, the migration tools might hang and generate out-of-memory exceptions when you terminate the process.
Symptom
The system is hung and extraneous out-of-memory exceptions are generated when you terminate the process.
Cause
The Solaris and HP-UX platform implementations of the Java™ 2 SE (JRE) have a timing issue. This issue might result in a deadlock when you run the migration tools. Because this is a timing issue, the problem does not occur every time you run the tools.
Resolving The Problem
To resolve this issue, Sun Microsystems added tuning options to their class loader policy. To activate these options, edit the Java performance options in the script that you are attempting to run. Make these edits to the version of the migration script that is located in the ${WAS_INSTALL_ROOT}/bin directory.
Update the performance options to append -XX:+UnlockDiagnosticVMOptions -XX:+UnsyncloadClass as shown in this example:
case $PLATFORM in
AIX)
PERF_JVM_OPTIONS="-Xms512m -Xmx768m -Xquickstart" ;;
Linux)
PERF_JVM_OPTIONS="-Xms512m -Xmx768m -Xj9 -Xquickstart" ;;
SunOS)
PERF_JVM_OPTIONS="-Xms512m -Xmx768m -XX:PermSize=40m
-XX:+UnlockDiagnosticVMOptions -XX:+UnsyncloadClass" ;;
HP-UX)
PERF_JVM_OPTIONS="-Xms512m -Xmx768m -XX:PermSize=40m
-XX:+UnlockDiagnosticVMOptions -XX:+UnsyncloadClass" ;;
OS/390)
PERF_JVM_OPTIONS="-Xms512m -Xmx768m" ;;
esac
Related Information
[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Migration","Platform":[{"code":"PF010","label":"HP-UX"},{"code":"PF027","label":"Solaris"}],"Version":"7.0","Edition":"Base;Express;Network Deployment","Line of Business":{"code":"LOB45","label":"Automation"}}]
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Document Information
Modified date:
03 September 2019
UID
swg21319783