Hi,
I am running into the same issue. In my case, the 15 'threads' is a bottleneck that can easily be remedied if I could double or triple the pool sizes. I am able to reduce the size to 10 (or any number below 15) but I cannot increase it.
Am I missing something obvious?
This is the closest to an exaplantion I can find: http://community.jboss.org/wiki/ConfigJBossMDB?decorator=print, See 'General Pooling Notes'.
Cheers,
-H