Tomcat on production server, PermGen and redeploys

Question

It looks like

 MemoryError: PermGen space
 java.lang.OutOfMemoryError: PermGen space

is a common problem. You can Increase the size of your pe

Answer 1

You should enable PermGen garbage collection. By default Hotspot VM does NOT collect PermGen garbage, which means all loaded class files remain in memory forever. Every new deployment loads a new set of class files which means you eventually run out of PermGen space.