Good evening!

I have tried to install ZCS7 on a virtual machine (virtuozzo), but I have some problems with java runtime. Guest-system is a Ubuntu 10.04LTS.
Zimbra is not starting because there are the following problems:
Because java detect the whole ram of the physical server, there is a problem to start java.
At console I type: export _JAVA_OPTIONS='-Xms256M -Xmx256m'
After this command I can start the services (su zimbra --> zmcontrol start).
My question:
In which configuration file I have to set the JAVA-options?