Very occasionally calls to QueueSender.send will hang and appear to go into an infinite loop. I've got 20-30 systems scattered around, all processing/generating several thousands of messages a day 24*7 and this will occur maybe once every 3 or four months. Has anybody else seen this? I've not got around to enabling TRACE level debugging on JBossMQ yet, that's my next step but I need to get permission to do the config change and obviously I may need to run with this for some months before the issue recurs. I'm running jboss 4.0.1, JBossMQ is configured with jdbc persistence to oracle. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4032690#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...