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| Getting Message in Order |
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| rammer |
 Posted: Mon Oct 04, 2004 6:08 am Post subject: Getting Message in Order |
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Partisan
Joined: 02 May 2002
Posts: 359
Location: England
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Hi,
I am asking this question from an administrator's point of view so please bare with me.
I have an application on QMGR1 that sends messages to QMGR2 via clustering. The messages route via two MQ Hubs QMGRA and QMGRB so it is quite possible that the messages could show up on QMGR2 in a different order to which they were sent.
If the messages have to be got from QMGR2 in the order that they were put on via QMGR1 ie, message1,2,3,4 and not how they ended up on the queue (message2, 1, 4,3) Is this possible.
I have read through some of the responses on here searching for message priority and FIFO and also through the programming guide but am still a little confused on what would require doing. (Remember I am an administrator, and defiantley not a developer!!) 
Thanks in advance. |
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| bower5932 |
| Posted: Mon Oct 04, 2004 6:54 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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If the messages have to be delivered in order, I'd consider having your developer put them all as part of a group. On the receiving side, you could then not do your gets until all messages of the group were available.
It is possible to 'force' the messages to be received in order. There is a discussion on it in the Intercommunication manual. Look for 'Sequential delivery of messages'. However, it has a bunch of steps that has to be followed. |
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| rammer |
| Posted: Mon Oct 04, 2004 7:56 am Post subject: |
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Partisan
Joined: 02 May 2002
Posts: 359
Location: England
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Thanks for that, but I am not sure if putting them in a group would suffice as they are coming throughout a 24 hour period, where there could be 1000 in 2 minutes followed by a lapse of no messages over the next one hour, and they do need processing in a very short window.
Reading the section on Sequential delivery it appears that this only applies to Z/oS and we are on HP. The section "Sequential retrieval of messages" applies to everything that I am doing untill I get to the bullet point indicating that there can only be one route from sender to receiver and as I am using clustering and going via 2 hub queue managers to get to the destination then that is a no no
Would you there for say that I should just set up a sender/receiver channel from Qmgr 1 to Qmgr 2 or could I get the developer to code in on the put MQ Bind Open option?
Regards
Rammer |
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| kirani |
| Posted: Mon Oct 04, 2004 10:18 pm Post subject: |
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Jedi Knight
Joined: 05 Sep 2001
Posts: 3779
Location: Torrance, CA, USA
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I think MQ bind open option would help.
_________________
Kiran
IBM Cert. Solution Designer & System Administrator - WBIMB V5
IBM Cert. Solutions Expert - WMQI
IBM Cert. Specialist - WMQI, MQSeries
IBM Cert. Developer - MQSeries
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