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Heap Dump from Solaris gcore jdk 1.4.2.11 [message #490804]

Sat, 10 October 2009 20:14

Bill Clark
Messages: 1
Registered: October 2009

Junior Member

Is it possible to convert a solaris core dump of a Weblogic 8.1 managed server process running with JDK 1.4.2-11 into a heap map that can be read by MAT? This jdk does not support the -XX:+HeapDumpOnOutOfMemory option and attaching jmap to the running pid takes too long. Quicker to use gcore to create a core dump file and then run some tool against that to convert to a heap dump.

Grateful for any suggestions on how to proceed.

Thanks in advance.
Bill

[Updated on: Sat, 10 October 2009 20:22]

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Re: Heap Dump from Solaris gcore jdk 1.4.2.11 [message #494935 is a reply to message #490804]

Tue, 03 November 2009 05:25

Krum Tsvetkov
Messages: 146
Registered: July 2009

Senior Member

I just googled a little bit. There seems to be some way to use jmap on a core file. May be this would be the answer for you. However, I never tried it myself...

Should be something like
jmap -heap:format=b java corefile

here a description (but for java 6)
http://java.sun.com/javase/6/webnotes/trouble/other/matrix6- Unix.html

Looking at some bugs, this should be also available in 1.4.something
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6494472

Hope this helps.
Krum

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