> From: xu cheng [mailto:xcheng....@gmail.com] 
> Subject: OutOfMemoryError some time on some tomcat!!!!1

> the app works pretty well on my pc, and the tomcat 
> is apache-tomcat-6.0.29
> however , when I put this app on to another computer
> with the same tomcat it throws this exception
> Java HotSpot(TM) 64-Bit Server VM warning: Exception
> java.lang.OutOfMemoryError

> Exception in thread "http-8080-24" 
> java.lang.OutOfMemoryError: PermGen space

64-bit JVMs often require larger heap sizes than 32-bit ones.  If the error 
occurs on the first deployment of the app, you may just need to configure a 
larger PermGen.  However, if this error occurs only after redeploying your app 
some number of times, you likely have a memory leak.  Use any of the widely 
available profilers or heap analysis tools to see just what is consuming 
memory.  You can get some pointers here:

http://wiki.apache.org/tomcat/FAQ/Memory

 - Chuck


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