Thanks but that's been done, the problem is that by setting those values (in subject) my web application still only sees 353MB total memory as opposed to 1G+ that should be available. I'm getting out of memory errors during high load (complex page/backup etc) but I cant figure out where / if there are any internal jboss settings for memory allocation to web application etc.... my jboss startup screen looks like: anonymous wrote : | =============================================================================== | | JBoss Bootstrap Environment | | JBOSS_HOME: D:\apps\jboss-4.2.0.GA | | JAVA: d:\apps\jdk1.6.0_03\bin\java | | JAVA_OPTS: -Dprogram.name=run.bat -server -Xmx1300m -XX:MaxPermSize=378m -XX:PermSize=378M -Dsun.rmi.dgc.client.gcInterval=360000 -Dsun.rmi.dgc.server.gcInterval=360000 -Djava.awt.headless=true -Dcom.sun.management.jmxremote | | CLASSPATH: d:\apps\jdk1.6.0_03\lib\tools.jar;D:\apps\jboss-4.2.0.GA\bin\run.jar | | =============================================================================== | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4118780#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...