Hi,

Recently, we've started to see frequent out of memory errors in Tomcat -- 
see below.  Usually after about 4 days running (~100 users, with about 20 
to 60 sessions open simultaneously.)

This is on a OX 5 + SLES 9 system; current work around obviously is to 
reboot daily, but this is not really acceptable.

Where can I look next?  What parts of the configuration should I look at / 
tweak?

++
Jul 10, 2008 12:36:07 PM 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable run
SEVERE: Caught exception (java.lang.OutOfMemoryError) executing 
org.apache.jk.common.SocketConnection at 1479225, terminating thread
Jul 10, 2008 12:34:59 PM org.apache.coyote.tomcat5.CoyoteAdapter service
SEVERE: An exception or error occurred in the container during the request 
processing
java.lang.OutOfMemoryError
Jul 10, 2008 12:35:18 PM 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable run
SEVERE: Caught exception (java.lang.OutOfMemoryError) executing 
org.apache.jk.common.SocketConnection at 86d5e2, terminating thread
++

Versions:
open-xchange-0.8.8-14
open-xchange-adminweb-1.4.0-4
open-xchange-daemons-1.4.0-8
apache2-jakarta-tomcat-connectors-5.0.19-29.8
jakarta-tomcat-5.0.19-29.8

Any more data required?

cheers & thanks in advance
-- vbi

-- 
Anyone can invent a security system that he himself cannot break.
        -- Schneier's Law