I am using MQ 5.3 on WAS 5.0. I do all my database processes offline by dropping messages on a queue and update database from MDB. I have 3 production servers - my MQ queue manager on one server and on other two servers the JNDI entries are pointing to the Queue Manager on 1st server. The problem I am facing is that after some time all JMS connection requests on one server times out whereas the other two works fime. On restarting that particular server the problem gets resolved temporarily but reappears after a couple of days or so. The connection and session pool size as well as the listener settings are same on all the 3 servers. Please let me know what other issues can cause this.