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From "Mark Pease" <>
Subject Re: Heap_Size Help
Date Fri, 11 Apr 2003 18:47:39 GMT
If you are using the Windows service, this link gives you all the
information you need to know:

Specifically, you add your JAVA_OPTS to the 'JVM Option Number n' registry
settings, then make sure that you change 'JVM Option Count ' to reflect the
number of options you will then have.

The '-Xmx' setting defines the maximum amount of memory the JVM can use,
whereas the '-Xms' is like an initial memory allocation setting.

Good luck!

----- Original Message -----
From: "Scott Purcell" <>
To: <>
Sent: Friday, April 11, 2003 2:43 PM
Subject: Heap_Size Help


I am running Tomcat V4.0.6 on Windows 2000. I am having a memory problem
with the heap that tomcat is configured for. I have searched the web for
info, but I am not finding anything useful. Does anyone know how this is

I did find this
bash>export TOMCAT_OPTS=${TOMCAT_OPTS}" -Xmx512m -Xss64k"

But I truely do not understand what that is doing, I am thinking it may be a
Unix thing and not a PC thing.


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