In the Java Virtual Machine, the permanent generation (or permgen) is used for class definitions and associated metadata.
It looks like MemoryError: PermGen space java.lang.OutOfMemoryError: PermGen space is a common problem. You can Increase the size …
java tomcat out-of-memory permgen redeployWe have had our glassfish instance go down every two weeks for a while with a java.lang.OutOfMemoryError: PermGen …
java memory-leaks profiling permgen jmap