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From mickhayes <>
Subject Re: Re: JVM Heap full & ATMQ crashed
Date Tue, 12 Jun 2012 09:20:07 GMT
It's most likely that you need to have -d64 on the command line to get a
64-bit hotspot VM.

I still think you are using a 32-bit JVM. Maybe the version of the JRE is

About the options... from java -help:

     -d32          use a 32-bit data model if available

    -d64          use a 64-bit data model if available

3G Heapspace is more than you need for your messaging load.
I would change the -Xmx to 500M maximum.

Finally, I say, use the defaults unless you have reason to do otherwise.
For sure, you don't need to change from the default GC behaviour in 1.6.0
for this messaging case.

Michael Hayes B.Sc. (NUI), M.Sc. (DCU), SCSA SCNA 

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