I have at home rather troublesome problem. From time to time there is a
problem with the display side WebAccess what the cause is tomcat6, which
simply does not knead.

I put a virtual machine on SLES11SP4 on which I installed only WebAccess:

Build number: 120531
Software Version: 12.0.4 06/05/2015

And the problem persists. Number of users log on once at a time to
WebAccess to 170 users.

The whole Groupwise is version 2014 R2, unfortunately WebAccess must be
version 2012

What can you do with tomcat6, I set him already 8 GB of memory.