Recurring “PermGen” in Tomcat 6

Question

I keep getting a \"PermGen\" error on my Tomcat 6 server.

I know what application is causing the problem, but I am not sure why it is doing so. The application is

Answer 1

Try the following JVM switches:

-XX:+UseConcMarkSweepGC
-XX:+CMSPermGenSweepingEnabled
-XX:+CMSClassUnloadingEnabled

Upping the permgen space with -XX:MaxPermSize just delays the problem.

Please see this comment: How to deal with “java.lang.OutOfMemoryError: PermGen space” error

That indirectly pointed me to these two posts: problem, solution