Tuning the JVM server startup environment
If you are running multiple JVM servers, you can improve performance by tuning the JVM startup environment.
About this task
Procedure
- Create a shared class cache for the JVM servers to load
the libraries a single time. To use a shared class cache, add the -Xshareclasses option to the JVM profile of each JVM server. For more information see Class data sharing between JVMs.
- Increase the timeout value for the OSGi framework.
The DFHOSGI.jvmprofile contains the OSGI_FRAMEWORK_TIMEOUT option that specifies how long CICS® waits for the JVM server to start and shut down. If the value is exceeded, the JVM server fails to initialize or shut down correctly. The default value is 60 seconds, so you should increase this value for your own environment.