Solution only usable for java6 for (-XX:+) flags.ref: http://stackoverflow.com/questions/3717937/cmspermgensweepingenabled-vs-cmsclassunloadingenabled/3720052#3720052
http://en.wikipedia.org/wiki/Java_version_history Basile = Ilya Obshadko-2 Apr 26, 2014; 6:37am Re: permgen error I've managed to get rid of PermGen space errors using this JVM startup configuration: -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=128m Hope that might help others affected by this problem.
