Appropriate place in catalina.bat to set JAVA_OPTS

Question

I got the below error

\"java.lang.OutOfMemoryError: PermGen space\"

In my catalina.bat file, where is the appropriate place f

Answer 1

Like others have already suggested you need to use JAVA_OPTS set to something like: JAVA_OPTS="-XX:MaxPermSize=98m". This, alone, will probably solve the issues, but if you are redeploying a lot of times and your war/jar is huge you will hit this memory limit too.

For this last scenario, something normal on a test/devel machines, I recommend using:

-XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC

This options will enable the unloading of the unused classes.

Look here more details, especially the comments.