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| Is MQCONN needed for TXSeries ? |
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| KIT_INC |
 Posted: Sat Jun 23, 2012 8:15 pm Post subject: Is MQCONN needed for TXSeries ? |
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Knight
Joined: 25 Aug 2006
Posts: 589
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I m reading the MQV7 info center. Under TXSeries for Windows and Open Systems , iy says
These programs do not need to do any work to connect to a queue manager because the CICS system itself is connected. Therefore, only one connection at a time is supported. CICS applications must issue an MQCONN call to obtain a connection handle, and an MQDISC call before they exit.
The first part says
These programs do not need to do any work to connect to a queue manager because the CICS system itself is connected. So this is the same as CICS on ZOS, no NQCONN is needed.
Then it says
CICS applications must issue an MQCONN call to obtain a connection handle, and an MQDISC call before they exit. Which I think means MQCONN is needed.
I am very confused.
Can some one help ? |
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| fjb_saper |
| Posted: Sat Jun 23, 2012 10:06 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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I would interpret this as:
Even though CICS itself is connected, your CICS program still need to do the MQCONN call to obtain a handle. 
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| KIT_INC |
| Posted: Sun Jun 24, 2012 2:26 am Post subject: |
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Knight
Joined: 25 Aug 2006
Posts: 589
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Thanks fjb_saper,
I have one more question. Can CICS transaction in TXSeries issue MQ client calls ? If so then MQCONNX is needed to specify the hostname and IPaddress of the QMGR it wants to connect to. We are thinking of adding TXSeries to our current ZOS CICS/MQ environmrnt. We have to investigate all the differences.
One important topic is we use shared Queues in ZOS which allow all CICS region on different ZOS LPAR to access the same queue. But there is no shared queue in TXSeries (AIX). Being able to issue client call may be a way to allow a CICS region on a server to access message on another server. |
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| KIT_INC |
| Posted: Sun Jun 24, 2012 2:46 am Post subject: |
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Knight
Joined: 25 Aug 2006
Posts: 589
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We just noticed some IBM DOCs on configuring TXSeries with MQ ET client. So the answer to my question is likely a yes. We are very new to TXSeries. Is CICS program the only program that runs on it ? We need to confirm that the setup in those documents includes the use of MQ client calls inside CICS transactions and not for other applications that runs under TXSeries. What if we are not concern about transaction and just use the standard MQ client instead of MQ ET Client ?
We also hope that some one can share their experience with us on the use of MQ with TXSeries and their comments on if the use of MQ client can help to get around the lack of shared queue feature in this environment. |
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| bruce2359 |
| Posted: Sun Jun 24, 2012 4:11 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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Yes, mqconn is required by your applications - but ignored in the CICS environment. A cics transaction/application does the connection to the qmgr, and transports all mq calls across this connection to/from the qmgr.
Shared queues are only supported on the z/OS platform WMQ. Other platform qmgrs can't be members of QSGs.
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Last edited by bruce2359 on Sun Jun 24, 2012 4:18 am; edited 1 time in total |
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| Vitor |
| Posted: Sun Jun 24, 2012 4:14 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| fjb_saper wrote: |
I would interpret this as:
Even though CICS itself is connected, your CICS program still need to do the MQCONN call to obtain a handle. |
Your z/OS CICS application needs a connection handle to operate, in the traditional pattern. That connection handle can only be to the queue manager the CICS region is associated with, analogous to a binding connection on distributed.
I've no experience with TXSeries; someone else will be along in a moment.
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