IBM BPM, V8.0.1, All platforms > Tuning > Tuning parameters
Java tuning parameters
You can use the administrative console to change the settings for some frequently used Java™ Virtual Machine (JVM) tuning parameters relating to garbage collection and heap sizes.
To access the JVM administration page, open the administrative console and navigate to Servers > Server Types > WebSphere application servers > server_name > Server Infrastructure > Java and Process Management > Process Definition > (Control or Adjunct or Servant) > Additional Properties > Java Virtual Machine.
For more information about JVM tuning, go to the 
WebSphere Application Server Information Center and search for Tuning the JVM in the Network Deployment (z/OS ), Version 8.0 documentation.
For more information about JVM tuning, go to the WebSphere Application Server Information Center and search for Tuning the JVM in the Distributed
operating systems, Version 8.0 documentation.
Garbage collection is the process of freeing unused objects so that portions of the JVM heap can be reused.
Use the appropriate Java heap
size for production environments. To change the default Java heap sizes, set the Initial Heap Size and Maximum Heap Size values explicitly on the Java Virtual Machine administrative panel.