Where I save Executor instance in MDB environment

Hi,
I've been doing some experiences with JMS and Message Driven Beans.
I put in a queue messages and see how many MDB beans catch and treat the message. I've concluded that Glassfish creates many MDB beans and some are removed.
My goal is control the flux of messages treatment. In other words i dont want instances of beans treat the message in a uncontrolled manner. For example if i have 10 messages in a queue and the Application Server is running on a machine with two cpu cores i want only two messages be treated each time.
I thought in instantiating an Executor. The motif is MDB beans get Executor reference and send the message to the Executor. The Executor see what threads are available in Thread Pool and treat the message.
But the difficulty is how I save the Executor instance. In a static variable? In a MBean? In a shared memory (if yes how?).
Thanks in advance.

most app servers let you control the size of the "pool" used for various bean types. a google query for "glassfish mdb pool size" looks like it's returning relevant results.

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I am not sure about this piece of information in installation docs
please refer
http://download.oracle.com/docs/cd/E17236_01/epm.1112/epm_install_11121/frameset.htm?launch.html
When you configure in a distributed environment, provide a new, unique instance name as you configure each server. For example, if you are using the default instance name epmsystem1 on the first server, and you keep the same naming convention on subsequent servers, you would create new, unique instance names on each subsequent server, such as epmsystem2, epmsystem3, and >so on. What if i use same path "d:\.......\epmsystem1" on all servers in distributed environment?
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Kumar
Edited by: Kumar 1 on Oct 4, 2011 6:18 AM

Thanks John,
Mostly i configured different instance name ("D:\oracle\middleware\epmsystem1" and "D:\oracle\middleware\epmsystem2" etc.
but i have one client where i see similar instance on all servers in distributed environment "D:\oracle\middleware\epmsystem1" and "D:\oracle\middleware\epmsystem1" etc.
Please advice? and let me know what could be impact of these two scenario.
Regards
Kumar

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Where I save Executor instance in MDB environment

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