How to increase the Heap space of Jdeveloper for about more than 512 MB?

When starting JDeveloper, the application within JDeveloper is throwing the error message:
"could not reserve enough space for object heap"
and a windows popup with the following error message:
"Unable to create an instance of the Java Virtual Machine Located at path: ..\..\jdk\jre\bin\client\jvm.dll "
To resolve these issues, i know that adding the following in ide.conf , jdev.conf will help.
AddVMOption -XX:MaxPermSize=512M
AddVMOption -Xmx512M
AddVMOption -Xms512M
I have got 10 GB of RAM in my desktop machine and virtual memory of 15 GB (page size). I am not able to increse the heap space of Jdeveloper for about more than 512MB. This is really frustrating..I had to restart my jdevloper after 3 or 4 deployments.....Has anyone tried success in increasing the heap space in jdeveloper for about 2 GB?
Regards
Prasath.C

Yes, i know that -XX:MaxPermSize has nothing to do with Heap Memory. I Just pasted all my configuration settings to know if some thing or the other has caused the issue.... After hearing few people who increased the heap space to more than 512m , i played with those settings again and figured out few things...Mine is Jdeveloper 11.1.1.4, 64 bit Windows 7 environment, 64 bit Java/ JDK.
First, i was deceived by one suggestion in forum that, keeping max and min heap memory to same size always will yield in good performance...From that time on wards, i was always increasing both and was never able to move more than 512m..But this time, i kept the min memory as constand and kept on changing the max memory ..
Jdev.conf
AddVMOption -XX:MaxPermSize=512M
AddVMOption -Xmx972M (I was never able to increase more than this size, though i have around 10GB RAM, if not Jdev doesnt startup)
AddVMOption -Xms512M
Ide.conf
AddVMOption -Xmx2048M (here i was able to increase)
AddVMOption -Xms512M
But even then, i was not seeing my changed settings at the time of deployment...
starting weblogic with Java version:
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b51)
Java HotSpot(TM) Client VM (build 17.0-b17, mixed mode)
Starting WLS with line:
C:\Oracle\MIDDLE~1\JDK160~1\bin\java -client -Xms512m -Xmx512m -XX:MaxPermSize=512m -Dweblogic.Name=DefaultServer ..........
Then i changed again into
setDomainEnv.cmd of my default domain
set USER_MEM_ARGS=-Xms512m -Xmx2048m -XX:MaxPermSize=512m
Then i stared my deployment...this time i could see a real boost in deployment...and my page was launched in a fraction of minute..
tarting weblogic with Java version:
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b51)
Java HotSpot(TM) Client VM (build 17.0-b17, mixed mode)
Starting WLS with line:
C:\Oracle\MIDDLE~1\JDK160~1\bin\java -client -Xms512m -Xmx2048m -XX:MaxPermSize=512m -Dweblogic.Name=DefaultServer ..........
This is my working configuration....Thanks guys for your replies.....
Regards
Prasath.C
Edited by: Prasath C on 05-Aug-2011 04:41

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