AOPClassProxy exhausts PermGen

Solution Verified - Updated

Environment

  • JBoss Enterprise Application Platform (EAP)
    • 5.0.0
  • JBoss AOP
    • 2.1.6 CP01

Issue

  • org.jboss.aop.generatedproxies.AOPClassProxy is loaded continuously and never unloaded, exhausting the PermGen
  • OutOfMemoryError: PermGen space

Resolution

Root Cause

This is caused by a bug in JBoss AOP. It is supposed to cache the proxy classes it is creating and only create one per unique class. However, due to this bug, it creates a new proxy class every time something is put in the cache.

Diagnostic Steps

  • Check the heap dump for an unusually large amount of generated proxies.
Tags

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