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MQSeries.net Forum Index » IBM MQ API Support » Using mutiple CONN calls

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sanjoo
PostPosted: Mon Jan 09, 2006 1:53 am    Post subject: Using mutiple CONN calls Reply with quote

Acolyte

Joined: 26 Oct 2005
Posts: 65
I have to connect to two QMs in different modes. can I connect with same MQ variables. To elaborate more -----

* OPEN INPUT QUEUE
MOVE MQOT-Q TO MQOD-OBJECTTYPE
MOVE WS-MQI-REQ-QUEUE TO MQOD-OBJECTNAME

COMPUTE WS-MQI-OBJECT-OPTIONS = MQOO-INPUT-SHARED +
MQOO-FAIL-IF-QUIESCING +
MQOO-SAVE-ALL-CONTEXT

CALL 'MQOPEN' USING WS-MQI-CONNECTION-HANDLE
WS-MQI-OBJECT-DESCRIPTOR
WS-MQI-OBJECT-OPTIONS
WS-MQI-GETOBJ-HANDLE
WS-MQI-COMPLETION-CODE
WS-MQI-REASON-CODE

IF WS-MQI-COMPLETION-CODE = MQCC-FAILED
* BUILT THE ERROR RECORD
PERFORM 2300-SEND-ERROR-MESSAGE
END-IF
*********************
* OPEN OUTPUT QUEUE
*********************
MOVE MQOT-Q TO MQOD-OBJECTTYPE
MOVE WS-MQI-REP-QUEUE TO MQOD-OBJECTNAME
COMPUTE WS-MQI-OBJECT-OPTIONS = MQOO-OUTPUT +
MQOO-FAIL-IF-QUIESCING

CALL 'MQOPEN' USING WS-MQI-CONNECTION-HANDLE
WS-MQI-OBJECT-DESCRIPTOR
WS-MQI-OBJECT-OPTIONS
WS-MQI-PUTOBJ-HANDLE
WS-MQI-COMPLETION-CODE
WS-MQI-REASON-CODE

************************************************

here can I use same variable to have connection handle. if yes then how MQ going to decide who's who?
If not; then I guess I have to use different variables .... right?
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Sanjoo

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zpat
PostPosted: Mon Jan 09, 2006 1:56 am    Post subject: Reply with quote

Jedi Council

Joined: 19 May 2001
Posts: 5866
Location: UK
One connection handle = one connection to a given queue manager

You should review whether you really need to connect to two queue managers. Generally you should connect to one and route messages to/from other queue managers using remote queues and channels.

If you are on a mainframe, then you cannot connect as a client and therefore the question does not usually arise. If your mainframe has more than one queue manager - I would ask why?

MQ application programs should be as decoupled as possible from the topology of the infrastructure.
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wschutz
PostPosted: Mon Jan 09, 2006 4:15 am    Post subject: Reply with quote

Jedi Knight

Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
You are typing "connection handle", but I suspect you mean "object handle". If you open two queues, and you want to reference them both, you need two variables to hold the handles.
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