Ranier,

Thanks for your response and thoughts.

> Are there normal shutdown messages in the Tomcat logs?


No, the catalina.out log has our messages but none of the normal shutdown stuff 
(we see the shutdown messaging every day when we push changes and restart 
Tomcat at 4:00AM.)

Thanks,

Carl

On Feb 28, 2012, at 2:00 PM, Rainer Jung wrote:

> 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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