What does PermGen actually stand for?

Question

I know what PermGen is, what it\'s used for, why it fails, how to increase it etc.

What I don\'t know is what PermGen actually stands for. Permanent... Gen... someth

Answer 1

PermGen is used by the JVM to hold loaded classes. You can increase it using:

-XX:MaxPermSize=384m

if you're using the Sun JVM or OpenJDK.

So if you get an OutOfMemoryException: PermGen you need to either make PermGen bigger or you might be having class loader problems.