Hi Adrian,

With reference to the previous posts.

We moved to JBoss3.2.3 a month back. All was going fine till today morning when we 
received alerts stating messages building up inspite of the MDB being active.

On investigating the logs I found 

2004-03-26 07:50:04,217 INFO  Thread Pool Worker-496 MDB received JMS object message 
with JMS ID ID:31-1080287404179103
2004-03-26 07:50:04,429 INFO  Thread Pool Worker-496  Processing of message 
[JMSMessageId=ID:31-1080287404179103] succeeded
2004-03-26 07:56:00,542 INFO  Thread Pool Worker-498 MDB received JMS object message 
with JMS ID ID:29-1080287760462649

The single instance of MDB that we have was using different threads from Thread Pool 
Worker pool. Most of the time the switch was quick however in this case the MDB took 6 
minutes to move to a new thread. 

During these 6 minutes there were around 800 messages piled up on the queue.

To make things worst there were similar pauses immediately afterwards too (ranging 
from 40 sec to 3 mins).

Is this a case of an instance of MDB being destroyed by the container to start a new 
instance?

Or is it the server starving of execute threads?


Any help would be highly appreciated.

Rgds,

Amresh








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