QueueSender.send occasionally hangs

[ashields]

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.

[genman]

Easiest to find runtime issues is to generate a stack trace during a pause.

What is your persistence strategy and DB? Could be that this is hanging.