When to add more?
Check the memory used by java.exe processes. If the memory used is the maximum defined and there is more memory available on the server, you can add more.
How do I increase the size of JVM memory?
JBOSS: If using JBOSS application server, search for file config.yml in the /app/depconfig/properties/external folder and change/add the following section (set heap-min and heap-max to desired values):
jboss:
jvm:
heap-min:
heap-max: