WLI Process only execute one at a time

Hi Guys,
I am new to WLI, and have what could be a simple question:
I have a seperate java program that puts messages one by one in sequence onto a JMS queue.
I have built a channel and a JPD that subscribes to this channel. The purpose of the JPD is to take the message from the incoming JMS queue, perform some adhoc functionality, and then return the message to a different outgoing JMS queue.
This works fine, however how do I ensure that only one JPD process is executed in full, before another is started.
e.g of problem: if a really big message is put onto the incoming JMS queue, it might take 10seconds to process, but in that time another message (small) is put onto the incoming queue. This means that another process instance kicks off, and that the second message is put onto the outgoing queue FIRST because it takes less time to process.
How do I ensure that the JPD process only executes once in full, at a time?
At the moment, the JPD has "stateless" set to false.
Any help would be greatly appreciated.
Regards.

I think if you follow a similar technique as outlined in http://edocs.bea.com/workshop/docs81/doc/en/integration/samples/sampleSuppressible.html?skipReload=true then it should work. The key points are to have a synchronous subscription to a MB channel, performing all your processing within this block, and to set the JMS event generator pool size to 1.

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Message was edited by:
Dale Earnest

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WLI Process only execute one at a time

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