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| Single Queue accessed by Multiple Queue Managers? Possible? |
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| jadranab |
 Posted: Wed Oct 08, 2003 12:42 am Post subject: Single Queue accessed by Multiple Queue Managers? Possible? |
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Newbie
Joined: 08 Oct 2003
Posts: 1
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| I have two machines on both of which I have installed MQseries, both have out-queues but only one has an in-queue. Is there a way for two queue managers on two machines to share an in-queue (not using OS390). That is, I would like messages that come from the application to the in-queue to be serviced by either queue manager on the two machines depending on the availability and load on the each machine. Is there a way to do this with MQ Series for Windows NT and 2000 V5.2 product?[b][/b] |
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| mqonnet |
| Posted: Wed Oct 08, 2003 5:20 am Post subject: |
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Grand Master
Joined: 18 Feb 2002
Posts: 1114
Location: Boston, Ma, Usa.
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Not sure if i understood your question right. But you could use MQ Clustering to achieve something like this. Moreover a queue just holds a message, irrespective of which queue manager this queue is hosted on, its the responsibility of the application to connect to the appropriate queue manager and open the appropriate queue to get/put messages.
So, again, your question is not very clear. If you wish to have queue managers load balance stuff for you, you could use MQ clustering.
Cheers
Kumar |
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| dgolding |
| Posted: Wed Oct 08, 2003 5:33 am Post subject: |
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Yatiri
Joined: 16 May 2001
Posts: 668
Location: Switzerland
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I think the question is whether a queue can be shared like on OS/390 - as part of a QSG thingie. Not at all. Not possible on W2K/Unix.
The trouble, IMHO, with clustered queues is that once the message arrives on the queue for that node, ONLY that node can access the message - if the queue manager or system goes down, the message is orphaned.On a share queue, if one node goes down, the others can still access and process the message[s].
HTH
P.S. Possibly posted in the wrong place?  |
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| mrlinux |
| Posted: Wed Oct 08, 2003 7:53 am Post subject: |
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Grand Master
Joined: 14 Feb 2002
Posts: 1261
Location: Detroit,MI USA
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If you were to client connect to the in-queue from one of the servers to read the inqueue then you could share the queue, but if the queue manager hosting it went down then both would be down.
_________________
Jeff
IBM Certified Developer MQSeries
IBM Certified Specialist MQSeries
IBM Certified Solutions Expert MQSeries |
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| leongor |
| Posted: Fri Oct 10, 2003 4:47 am Post subject: |
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Master
Joined: 13 May 2002
Posts: 264
Location: Israel
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The additional aspect is high availability cluster like HACMP on AIX.
You have then 1 queue manager on a shared disk, but 2 AIX machines.
If one fails then other takes control.
I hope this helps.
_________________
Regards.
Leonid.
IBM Certified MQSeries Specialist. |
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