It is ISM of Solaris. Timesten runs in ISM and my JVM didnot close ISM by default !! What a lesson :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4166679#4166679 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4166679