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| xa_open() concept - who calls this routine ? |
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| sebastia |
 Posted: Sun Mar 31, 2013 3:34 am Post subject: xa_open() concept - who calls this routine ? |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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Hi. I have a XA concept shadow ...
In XA spec document
>>> http://pubs.opengroup.org/onlinepubs/009680699/toc.pdf
... I read ...
| Quote: |
| In each thread of control, the TM must call xa_open() for each RM directly accessible by that thread before calling any other xa_ routine. |
So, I understand TM is calling xa_open() for all RM's
But when queue manager starts, in AMQERR01.LOG we get a message
| Quote: |
AMQ7605: The XA resource manager bwbd56 has returned an unexpected return code -5, when called for xa_open.
EXPLANATION: WebSphere MQ received an unexpected return code when calling XA resource manager bwbd56 at its xa_open entry point. |
So, the sequence of events has been
1) queue manager starts
2) somehow TM is aware of this fact
3) TM calls RM "bwbd56" (Oracle in fact) with mq's XA_Open_String from qm.ini
I have 2 questions, at least :
1) how does TM know mq has started ?
2) how does TM receive XAOpenString from QM.INI ?
Sebastian. |
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| bruce2359 |
| Posted: Sun Mar 31, 2013 6:22 pm Post subject: Re: xa_open() concept - who calls this routine ? |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| sebastia wrote: |
| 1) how does TM know mq has started ? |
At qmgr restart, the qmgr (RM) registers with the TM. Search the document you referenced for 'register.'
| sebastia wrote: |
2) how does TM receive XAOpenString from QM.INI ?
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IMS, it flows as part of the qmgr (RM) registration process.
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