Few notes after completing more test cycles. - OOME can be easily reproduced when continuously increasing server load. OOME is the first error the server fails with. (it is not the case with 4.0.5) - OOME error can be reproduced using high constant load but not if using low load. If the server is loaded with ~ 1/2 of failing configuration, it can run for hours without throwing OOME. It lead to question if it should be treated as an error? Or is it just reaching of server limits? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4031906#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...