[jboss-user] [Beginners Corner] - Re: java.lang.OutOfMemoryError: PermGen space

[PeterJ]

You can use JConsole or VisualVM to track the permgen usage. I prefer JConsole because it causes less strain on the app server (VisualVM generates a lot of garbage on the app server which then has to be collected)

You should set a larger permgen on the command line. Edit the run script, the line that sets the heap sizes in JAVA_OPTS and add -XX:MaxPermSize=256m (or larger).

Also, are you doing development work with a lot of redeploys? A redeploy will generally eat up permgen space. If so, you should periodically restart the app server.

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