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| MQ Syncpoint |
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| yacov |
 Posted: Mon Aug 13, 2007 9:25 am Post subject: MQ Syncpoint |
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Newbie
Joined: 27 Jul 2007
Posts: 3
Location: Israel
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Hi
First of all some info about our application.
We have z/os, CICS.
We read DB2 row after row and send some bussines data from it using MQ queue lets call it bussiness queue.
Also we another queue in the same program that we use for sending messages about fatal errors in application.
Because of some considerations, in bussiness queue we work with MQPMO_SYNCPOINT option, mainly in order to make one commit in DB2 and in bussiness queue.
In the second queue that we use to write our errors we work with MQPMO_NO_SYNCPOINT option.
Now the problem:
We have a very strange error in our application.
Despite the MQPMO_SYNCPOINT option in bussiness queue, the message we put, becomes available immidiatly after the call and before the commit.(we run Intertest(debug) to be sure).
In IBM documentation they write:
| Quote: |
| Do not specify MQPMO_NO_SYNCPOINT with MQPMO_SYNCPOINT |
Do they mean our situation?
Thanks for answer.
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Yacov |
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| Vitor |
| Posted: Mon Aug 13, 2007 11:29 am Post subject: Re: MQ Syncpoint |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| yacov wrote: |
In IBM documentation they write:
| Quote: |
| Do not specify MQPMO_NO_SYNCPOINT with MQPMO_SYNCPOINT |
Do they mean our situation?
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Not so long as you don't mix them on the same queue.
Are you certain that both DB2 & MQ are using CICS as a transaction coordinator, and the unit of work is properly set up?
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Honesty is the best policy.
Insanity is the best defence. |
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| yacov |
| Posted: Mon Aug 13, 2007 12:12 pm Post subject: |
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Newbie
Joined: 27 Jul 2007
Posts: 3
Location: Israel
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| Quote: |
| Are you certain that both DB2 & MQ are using CICS as a transaction coordinator, and the unit of work is properly set up? |
Our sys. admin says so.
| Quote: |
| and the unit of work is properly set up |
I don't make any explicit actions to set up a unit of work.
I act within a CICS transaction. I have a loop in which I : read DB2, send MQ message, update DB2, make a commit.
Is it smth. wrong with it?
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Yacov |
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