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CICS Roll back partially - Need to retain log file

 
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dwijadas

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Joined: 20 Sep 2005
Posts: 14

PostPosted: Wed Nov 16, 2016 4:30 pm    Post subject: CICS Roll back partially - Need to retain log file
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Hi,

I have a situation where roll back is issued but log file shouldn't roll back.

All files are VSAM. At this moment I am thinking of coding the log file update outside of the SYNC-COMMIT block.

Any other idea ?

Thank you.
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prino

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Joined: 07 Feb 2009
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Location: Vilnius, Lithuania

PostPosted: Wed Nov 16, 2016 5:50 pm    Post subject:
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Tell the auditors what you're doing. They will be well pleased!
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dwijadas

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PostPosted: Thu Nov 24, 2016 5:18 pm    Post subject:
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Well .. Thanks but I need idea.


The CICS program is initiated by a MQ trigger. Multiple file is needed to update. As part of the process once a result is sent out to requesting system. If the requesting system did not acknowledge the update. CICS should roll back all update.

Here roll back is fine. but the message log file should be kept as proof that request came to CICS.

Any idea ? is there any concept of SYNCPOINT/COMMIT nesting ?
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Robert Sample

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PostPosted: Thu Nov 24, 2016 8:13 pm    Post subject:
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Have you talked to your site CICS support group? If not, start there and see what they say. The CICS manual description of SYNCPOINT ROLLBACK states that ALL resources are rolled back together; leaving the log while rolling back everything else would seem to me to leave the system in an inconsistent state --NOT a good thing.
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dbzTHEdinosauer

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Joined: 20 Oct 2006
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Location: porcelain throne

PostPosted: Thu Nov 24, 2016 9:47 pm    Post subject:
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since you (should) know how the system operates,
application is responsible for appropriate application messaging,
which this situation clearly is.

do not forget that cics messages and logs have to do with cics behavior
and
not application decisions.
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