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| Reeti |
 Posted: Tue Sep 17, 2002 3:38 am Post subject: Replication |
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Apprentice
Joined: 11 Jul 2002
Posts: 40
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Hi All:
On a MQ Series server I've multiple queue managers, I would like to Synchronize two queue mangers. Means any message coming to a queue on one queue manager will get replicated to the another queue manger.
This needs to be done on a same MQSeries server or on diff. MQ servers.
This is a very urgent requirement. Pls. help.
Regards
Reeti |
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| PeterPotkay |
| Posted: Tue Sep 17, 2002 5:44 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Queue1 on QM1 is where the first put goes to. When the app puts to Queue1 / QM1, it specifies the MQMD_Report option of COA_With_Full_Data, Reply2Queue of Queue2, and Reply2QueueManager of QM2.
As soon as the message lands on Queue1 / QM1, a copy is automatically sent by QM1 to Queue2 / QM2.
Of course, since there is only 1 reply2queue / reply2queuemanager field, this idea only works if you aren't using those fields for something else (maybe the message going to Queue1 is a Request message expecting a legitimate Reply). In this case, your original app has to be recoded to do 2 seperate Puts, or recoded to use Distribution Lists. See this post:
http://www.mqseries.net/phpBB2/viewtopic.php?t=4791&highlight=distribution
_________________
Peter Potkay
Keep Calm and MQ On |
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| Reeti |
| Posted: Tue Sep 17, 2002 8:35 pm Post subject: Replication |
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Apprentice
Joined: 11 Jul 2002
Posts: 40
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Thanks for the reply.
But we don't want to proceed programmatically, our purpose is to acheive MQ series server replication for fail over and also for simultaneous replication of all queues so that applications can access it from any of the servers.
Cld u pls. help. We are in dire need of implementing the same at the earliest.
Regards
Reeti |
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| nimconsult |
| Posted: Tue Sep 17, 2002 9:59 pm Post subject: |
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Master
Joined: 22 May 2002
Posts: 268
Location: NIMCONSULT - Belgium
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MQ Series clustering provides the workload balancing you want to achieve.
MQ Series clustering also offers a "weak failover" solution, meaning that you can continue processing with the surviving queue managers of the MQ cluster, but you have lost the messages of the "dead" machine.
If you cannot afford to lose messages then you also need system clustering (such as HACMP for AIX, or MSCS for Windows for instance).
_________________
Nicolas Maréchal
Senior Architect - Partner
NIMCONSULT Software Architecture Services (Belgium)
http://www.nimconsult.be |
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| PeterPotkay |
| Posted: Wed Sep 18, 2002 6:07 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Clustering will still not solve the issue of getting copies of your messages to all instances of your queues. Clustering will round robin between all the instances of the queues, unless there is a local copy, in which case they will all go to the local copy.
MQ does not give you this capability out of the box. You have to change your program. Or add MQSi in the middle to intercept and replicate the messages.
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Peter Potkay
Keep Calm and MQ On |
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| nimconsult |
| Posted: Wed Oct 09, 2002 11:03 pm Post subject: |
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Master
Joined: 22 May 2002
Posts: 268
Location: NIMCONSULT - Belgium
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If you are looking for a solution of on-line (persistent and not persistent) message replication on MQ, you will find a sample application (code included) with the JASMQ framework.
Read related post http://www.mqseries.net/phpBB2/viewtopic.php?t=5735
_________________
Nicolas Maréchal
Senior Architect - Partner
NIMCONSULT Software Architecture Services (Belgium)
http://www.nimconsult.be |
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| mrlinux |
| Posted: Thu Oct 10, 2002 3:51 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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You set up your application to write to multiple queues with one MQPUT call.
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Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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