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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Generating heapdump in WMB - AIX out of memory

Generating heapdump in WMB - AIX out of memory

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wyatt

Posted: Wed Jun 06, 2012 6:52 am Post subject: Generating heapdump in WMB - AIX out of memory

Voyager

Joined: 28 Nov 2004
Posts: 76

Does anyone know the variable that needs to be set to have WMB generate java heap dump when an out of memory error occurs?

This doesnt do the trick

export JAVA_DUMP_OPTS="ONANYSIGNAL(NONE),ONINTERRUPT(NONE),ONOUTOFMEMORY(HEAPDUMP[3])"

Thanks

mqjeff

Posted: Wed Jun 06, 2012 6:57 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

http://publib.boulder.ibm.com/infocenter/wmbhelp/v7r0m0/topic/com.ibm.etools.mft.doc/an09143_.htm

It's not clear how much use you'll derive from this, but presumably if you're trying it you've got a reason for doing so.

In general, troubleshooting Broker events should be handled by troubleshooting Broker, rather than the JVM that runs as part of an EG.

lancelotlinc

Posted: Wed Jun 06, 2012 8:11 am Post subject:

Jedi Knight

Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA

jconsole can connect to a properly configured JVM in a DataFlowEngine to display all the normal stats of that JVM. jconsole is a standard part of every JRE since 1.4.

http://docs.oracle.com/javase/1.5.0/docs/guide/management/jconsole.html
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wyatt

Posted: Wed Jun 06, 2012 10:39 am Post subject:

Voyager

Joined: 28 Nov 2004
Posts: 76

Thx
using kill -3 does the trick, couldn't get the JVM to trigger a heap dump when using mqsichangeproperties Qmgr -e EG -o ComIbmJVMManager - n jvmSystemProperty -v "-DONOUTOFMEMORY=HEAPDUMP" (tried a few variations on this)

Cheers

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