Hi Utkarsh,

that should be really easy if you have 64bit operating system already. First download 64 bit Java from http://www.oracle.com/technetwork/java/index.html (JDK) for Windows 7 and install it. Make sure you are running the 64 bit java, in your command line type java -version and you should see something like:

Java HotSpot(TM) 64-Bit Server VM (build 20.2-b06, mixed mode)

Then you can either edit run.conf and change this line

#

# Specify options to pass to the Java VM.

#

if [ "x$JAVA_OPTS" = "x" ]; then

   JAVA_OPTS="-Xms128m -Xmx1g -XX:MaxPermSize=512m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000"

fi

-Xmx1g to 2g.

You can also set JAVA_OPTS

For instance on linux (on Windows use set and run.bat instead)

[rhusar@rhusar bin]$ export JAVA_OPTS="-Xmx4g"

[rhusar@rhusar bin]$ ./run.sh

=========================================================================

 

  JBoss Bootstrap Environment

 

  JBOSS_HOME: /home/rhusar/Download/jboss-5.1.0.GA

 

  JAVA: /home/rhusar/tools/jdk1.6.0/bin/java

 

  JAVA_OPTS: -Dprogram.name=run.sh -server -Xmx4g -Djava.net.preferIPv4Stack=true

 

  CLASSPATH: /home/rhusar/Download/jboss-5.1.0.GA/bin/run.jar:/home/rhusar/tools/jdk1.6.0/lib/tools.jar

 

=========================================================================

 

15:00:44,140 INFO  [ServerImpl] Starting JBoss (Microcontainer)...

15:00:44,141 INFO  [ServerImpl] Release ID: JBoss [The Oracle] 5.1.0.GA (build: SVNTag=JBoss_5_1_0_GA date=200905221634)

15:00:44,141 INFO  [ServerImpl] Bootstrap URL: null

HTH

Rado