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| rizzo |
 Posted: Sun Oct 17, 2010 5:56 am Post subject: z/OS MQ client and non-z/OS QMGR |
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Novice
Joined: 02 Aug 2005
Posts: 14
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Hello,
Is it possible for an MQ client on z/OS to access a QMGR on one of the distributed platforms? If so, can a COBOL client do this or would it have to be a Java client running in the Unix System Services? Would we still need a z/OS WMQ license for this?
I haven't found much documentation covering this scenario - most documentation covers client/server communication in the opposite direction - so I am wondering, if it's at all possible, whether it's discouraged or plain not allowed.
The background to my question is that we make updates in our IMS databases from non-mainframe Java programs via IMS Connect. We have a nightly stop of all IMS data stores for maintanence reasons, during which time we can't post updates. We are basically polling IMS Connect until we detect the IMS data stores are up again. We would like to change this so that z/OS retrieves updates itself to eliminate the polling.
For this we are considering use of queues. We already have a WMQ license for the distributed platforms and don't wish to buy WMQ for z/OS if we can help it. The WMQ Info Center states, for example, that a Java WMQ client can be executed on the z/OS, but doesn't explicitly state that that's also possible even when the QMGR isn't on the host.
I'm grateful for any help you can offer.
Regards
Steve |
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| bruce2359 |
| Posted: Sun Oct 17, 2010 8:05 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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Hi, Steve.
With the exception of Java/JMS, WMQ for z/OS is server-only.
So, no. WMQ z/OS cannot be a WMQ Client.
On z/OS the Client Attachment Facility (CAF), a separately licensed product, enables WMQ on z/OS to be the server for midrange WMQ client applications.
Hope this helps.
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| rizzo |
| Posted: Mon Oct 18, 2010 2:27 am Post subject: |
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Novice
Joined: 02 Aug 2005
Posts: 14
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Hi Bruce,
Thanks for the quick reply. Does that mean that a JMS client running in the Unix System Services could speak to a QMGR on a non-z/OS machine? Or is that also restricted to connections to QMGRs on z/OS? |
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| mqjeff |
| Posted: Mon Oct 18, 2010 4:19 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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My understanding is that it's restricted to apps running inside of WAS. But, that, yes, if needed they could establish a connection to a queue manager that is not on zOS.
Of course, any app running in a zLinux image can also do this. But that's just linux that happens to be running on zOS, not really zOS itself. |
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| Mr Butcher |
| Posted: Mon Oct 18, 2010 4:33 am Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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i dont want to be picky here, but just for clarification.
z/Linux may run under control of z/VM or directly in an LPAR. but it does not use z/OS or runs within or under control of z/OS.
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Regards, Butcher |
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| mqjeff |
| Posted: Mon Oct 18, 2010 4:48 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| Mr Butcher wrote: |
i dont want to be picky here, but just for clarification.
z/Linux may run under control of z/VM or directly in an LPAR. but it does not use z/OS or runs within or under control of z/OS. |
That is indeed a much more precise and correct version of what I was attempting to say.
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| rizzo |
| Posted: Tue Oct 19, 2010 5:06 am Post subject: |
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Novice
Joined: 02 Aug 2005
Posts: 14
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| Thanks for all the feedback! |
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| cicsprog |
| Posted: Wed Oct 20, 2010 8:12 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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A Java program running in USS can send messages to the local z/OS MQM where that local z/OS MQM can send the message to the local MQM, or a non-z/os MQM via cluster, or point-to-point connections.
But, you'd need a zos MQM.
Jason
Last edited by cicsprog on Wed Oct 20, 2010 8:23 am; edited 2 times in total |
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| cicsprog |
| Posted: Wed Oct 20, 2010 8:15 am Post subject: |
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Partisan
Joined: 27 Jan 2002
Posts: 347
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