> From: Tomi N/A [mailto:[EMAIL PROTECTED] 
> Subject: Re: Urgent: PermGen memory leak in a NetBeans 
> developed tomcat application
> 
> How do allow class unloading? How do I inhibit it, for that matter?

It's enabled by default (except for one of the esoteric garbage
collectors).  The -Xnoclassgc command line parameter inhibits class
unloading.

The papers linked to from the following page contain useful descriptions
of GC behavior and options (although not much discussion of PermGen GC
in any detail):
http://java.sun.com/javase/technologies/hotspot/gc/index.jsp

 - Chuck


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