As I already mentioned, the permgen is automatically garbage collected with unused classes being removed. The issue is that there are many situations where you believe that classes should not be in use but in fact they really are. Once you determine why the permgen is increasing in size, then you can put together a plan of action, with restarting being one of the possible options. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4179442#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...