"ppt" wrote : | 1 JMS msg was put on the master node queue on Q1. Both M1 and M2 consumed the same message and did their business logic. How is that possible that 2 MDBs consume the same JMS message? I thought either one of M1 or M2 would consume JMS, but not both. | It's not possible, so either they aren't the same message or the first delivery failed and it got redelivered, but to the other mdb. anonymous wrote : | In our setup, only one MDB has to do work. Is it possible to put the MDBs (ear file) on M1 and M2 in jboss-4.0.5.GA/server/all/deploy-hasingleton/jms or are there other solutions? | Thanks. Yes. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4123512#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...