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From Rainer Jung <rainer.j...@kippdata.de>
Subject Re: Tomcat suddenly dies
Date Tue, 28 Feb 2012 19:00:28 GMT
On 28.02.2012 19:47, Carl Kabbe wrote:
> Chuck and Chris,
>
> Thanks for your replies.  Below is some information to your questions/suggestions:
>
>>> Check the kernel logs (e.g., /var/log/messages, /var/log/warn), not
>>> just the Tomcat ones.  Also, look for a JVM dump file
>>> (hs_err_pid*.log)
>
>
> I have and there is nothing in the messages file except accesses granted to specific
workstations coming in on ssh and sync'ing to a time server.  Neither of these have times
that correspond to the crashes.
>
> There are no hs_err_* files anywhere on the servers.
>
>> Smells a lot like OOM killer.
>>
>> Carl, you say you have a 2GiB heap. Are you using 32-bit or 64-bit
>> JVM? What about other large-memory processes on the same boxes? Do you
>> have other JVMs running or a database, etc.? Does the JVM die on any
>> kind of schedule?
>
>
> We are running 64 bit OS's (Slackware 13.x, the latest version.)
>
> There are two other applications running on each of the boxes: 1) the Apache James email
server (localhost SMTP only) and 2) a small application that serves reports.  They are both
very small (the current server shows 11GB+ free memory) and always survive theTomcat crashes.
>
> These servers are only used for Tomcat (and the related James and report serving app.)
>
> Not on a timed schedule but usually during high traffic periods (usually, but not always,
as with last Friday.)

Are there normal shutdown messages in the Tomcat logs?

Regards,

Rainer


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