Hi all,

i am looking at an MDB problem for a couple of days now,
and could really need some thoughts on the following problem:


we have a common mdb setup (AUTO_ACK, persistet, transacted receiver MDB) and a client submitting messages to the queue.
since the client is much faster then the MDB process (around 1sec)
the queue fills up. with the default mdb config (no-singleton) there should a concurrent number of mdb instances that work on that queue.

for some reason, the container uses just a single instance sequentially,
which results in very poor performance.

even when i set the container min-size to 50, i see 50 mdb's are being created, but only one is used to process the queue contents.

this happens on 3.2.6 with jdk 1.4.2.


any hints or thoughts are greatly appreciated.
i alerady fostered the web, the faq and all the forums + mailinglists.

thanks in advance,
heiko