See my other posts, I did re-read the tuning guide and it specifically states PermGen is part of Heap.
-----Original Message----- From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] Sent: Wednesday, September 16, 2009 9:34 AM To: Tomcat Users List Subject: RE: java.lang.OutOfMemoryError: PermGen space Charles - Of course, a quick review of the doc I provided, proved me wrong on the Heap/PermGen issue. I admit not having re-read the memory tuning guide in a while (maybe since 1.4 days). Jeff -----Original Message----- From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] Sent: Wednesday, September 16, 2009 9:31 AM To: Tomcat Users List Subject: RE: java.lang.OutOfMemoryError: PermGen space Chuck - I couldn't tell from the post if the Architecture line meant hardware, OS, or JVM. And I'm under the impression from multiple re-reads of the Java tuning docs that ALL generations are drawn from the heap, including PermGen. Yes, using Jconsole or better is what he needs to do. Bruce- Here is another good read. Direct from Sun: http://java.sun.com/javase/6/webnotes/trouble/TSG-VM/html/tools.html Jeff -----Original Message----- From: Caldarale, Charles R [mailto:chuck.caldar...@unisys.com] Sent: Wednesday, September 16, 2009 9:04 AM To: Tomcat Users List Subject: RE: java.lang.OutOfMemoryError: PermGen space > From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] > Subject: RE: java.lang.OutOfMemoryError: PermGen space > > You don't say if the JVM is 32-bit or 64-bit Actually, he did: > Architecture: amd64 > JVM Version: 1.6.0_16-b01 > JVM Vendor: Sun Microsystems Inc. The architecture would be x86 for a 32-bit JVM on Intel/AMD. > 1) By splitting the Heap in half between NewGen and PermGen This is not correct. The -Xmx size does not include the PermGen size. Again, use JConsole or equivalent to verify that the requested heap sizes are being used. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. 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