OK, thank's for you reply. So HA-JNDI is probably not a solution for my problem. I am on atypic application. My application is running all the time. I want to use the cluster architecture to dispatch memory and cpu use. But I need sometimes to communicate between node. I thought it was possible by Ejb clustered to call the ejb deployed on the node we want. I think I will use directly RMI to make this kind of call. What do you think about that ? The subsidiary question is, with jmx, is it possible to call a specific node ? The application is the same on all nodes except that I want to parametrize the initialization on each node. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4126536#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...