I found this post on the net. Perhaps this is useful ?
http://www.archivum.info/taroon-list@redhat.com/2007-08/msg00008.html
Shreedhar Ganapathy wrote:
> Very useful to know about this possibility and glad you have a better
> idea about the root cause. Thank you very much for sharing this
> information.
>
> May I suggest, you contribute this as a FAQ entry in a suitable spot
> here ?
> http://wiki.glassfish.java.net/Wiki.jsp?page=GlassFishUserFAQ
>
> Good luck with the investigation.
>
> Thanks so much
> Shreedhar
>
> glassfish_at_javadesktop.org wrote:
>> I think we found out... and Glassfish hasn't been guilty.
>>
>> Indeed your suggestion to look at the OS made me dig in system logs.
>> It turns out that the DAS and instance processes were killed by
>> RedHat's [i]oom-killer[/i].
>>
>> It's surprising because the monitoring and logs show there is swap
>> room left, but it becomes an OS issue. The OOM-killer chooses the
>> most memory-hungry processes for selective elimination, and,
>> unsurprisingly, they turn out to be our server-side nodes and
>> instances which are configured with a rather large heap.
>>
>> We're going to try giving less heap to the DAS, though I am clueless
>> as to how much memory it needs. That probably won't save our
>> instances' JVMs: we still have to investigate, at the OS level, who's
>> consuming memory, or tune how the oom-killer triggers...
>>
>> Thanks for your answering; I leave this note in case someone ever
>> searches for Glassfish DAs or instance process vanishing on RedHat
>> (notice the dense usage of keywords together to get that indexed :o)
>> [Message sent by forum member 'jduprez' (jduprez)]
>>
>> http://forums.java.net/jive/thread.jspa?messageID=347688
>>
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