hi guys, Could you please give me some clue, what I need to read or learn to understand it ? What does the JobExecutor make? I mean what is its using, why do we need it? I have taken a look in the code, but I don't understand and didn't find some document about it. I am beginner in this area and sincere thanks you for sharing your experience. regards, Fengzhi View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4136553#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...