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MQSeries.net Forum Index » General IBM MQ Support » Locking and Unlocking Queue- from Datapower

Locking and Unlocking Queue- from Datapower

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yshakraj

Posted: Thu May 16, 2013 10:25 pm Post subject: Locking and Unlocking Queue- from Datapower

Voyager

Joined: 14 Sep 2011
Posts: 91

Hi all,

we have a requirement to break a big message and place it to the queue .Before completion of placing all the messages -no other application should be able to pull the messages from the queue.

We had a thought like we will lock the queue until the process is completed .Once full message is placed it should release the queue.

We have done locking messages - but not the queue .Please help us - how we can go forward .

Thanks,
yshak

zpat

Posted: Thu May 16, 2013 11:01 pm Post subject:

Jedi Council

Joined: 19 May 2001
Posts: 5866
Location: UK

You need to put these messages under syncpoint (at a minimum) and commit when all of them have been put.

MQPMO_SYNCPOINT (or a transacted session in JMS)

However you should also look at grouped and segmented messages to see if these features would be useful.

You need to code correctly at the message level and not design a system involving "locked" queues (even if that were possible).

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