Java virtual machine (JVM) tuning tips for z/OS

Before you begin:

  1. Ensure that you have the most recent version of JVM that is supported by WebSphere for z/OS. As of this writing, the JVM level for WebSphere Application Server for z/OS V5 is 1.3.1 and PTF 20.
  2. Have the most recent PTFs, since almost every PTF level has improved performance of the JVM.
  3. Have sufficient JVM Heap Size. Refer to Java virtual machine storage tuning tips for z/OS for a discussion of this setting.

How to view or set: Use the WebSphere Administrative console :

  1. Click Servers > Application Servers > server_name > Process Definition > Java Virtual Machine
  2. Select the options listed in the section belong on the Configuration Tab.


Related reference
Java virtual machine storage tuning tips for z/OS
Application client troubleshooting tips



Searchable topic ID:   rprf_tunezjvm
Last updated: Jun 21, 2007 9:56:50 PM CDT    WebSphere Application Server for z/OS, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.zseries.doc/info/zseries/ae/rprf_tunezjvm.html

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