Clebert wrote : Also.. that will be an issue when a customer is upgrading his version.. A customer would need to define the ClientID or the ConnectionFactory won't work, but we will have an exception clearing that. We could take the action of using a sequence case clientID is null (something we will have to think about later). | Please, scratch that.. I was so tired that I didn't realized that the clientID defined on ConnectionFactory was being used to automatically define clientIDs (connection.setClientID). I'm now using a different String for that. I'm using the ConnectionFactory's MBean name. If we don't want to use that string we will have to ellect another string for that. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989161#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...