I use Java version Java™ 2 Runtime Environment, Standard Edition 5.0 32 Bit
My compay have user online in wildfire 1800 account use java memory Xmx =1536 (90%) . Future ,User add in Wildfire 6000 account . So,I need upgrade Xmx about 5 G for Support Requiment user add in. Are Wildfire support Xmx=about 5 G ?
on Windows you need to use the vmoptions file, there’'s no start script.
I wonder how your 32 bit JVM should be able to allocate 5 GB. You may want to use a smaller heap or run a 64 bit JRE. But 64 bit JRE’‘s consume nearly two times the memory of 32 bit JRE’'s.
see http://www.tagtraum.com/ for a description of the JVM parameters if you want to take a more detailed look at the parameters and how to tune them.
Xms = initial java heap size
Xmx = max java heap size
So you can set the lower and upper java heap size, the JVM itself will use the native heap to control the VM and thus the whole process will use some more memory than you did specify with Xmx.