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| BobWilmes |
 Posted: Fri Apr 14, 2006 9:19 am Post subject: OTMA Bridge and Expiry ??? |
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Novice
Joined: 07 Aug 2001
Posts: 13
Location: Phoenix
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Distributed Linux box starts message chain with 300 ticks in the MQ message expiry header. MQ forwards through WBIMQ hub to z/OS MQ. Message hits the OTMA bridge.
Question:
What is the default behavior of the expiry time of the message in the OTMA bridge once IMS returns a reply - is the same message expiry carried over of is a new (maybe unlimited message timeout time) assigned ? Is it possible to force the OTMA bridge to keep the same message expiration value on the reply message ?
Thanks for a quick reply and any links to the IBM doc that explains this.
Regards,
Bob
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Bob Wilmes
Scottsdale, Arizona
wilmes@ieee.org |
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| EddieA |
| Posted: Fri Apr 14, 2006 9:38 am Post subject: |
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Jedi
Joined: 28 Jun 2001
Posts: 2453
Location: Los Angeles
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| once IMS returns a reply |
Isn't the reply message built and PUTted by your IMS application. In which case, it has full control over what it specifies.
Cheers,
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Eddie Atherton
IBM Certified Solution Developer - WebSphere Message Broker V6.1
IBM Certified Solution Developer - WebSphere Message Broker V7.0 |
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| BobWilmes |
| Posted: Fri Apr 14, 2006 9:51 am Post subject: |
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Joined: 07 Aug 2001
Posts: 13
Location: Phoenix
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When I spoke with the team doing the IMS transaction - all they get is the application data - I think the OTMA bridge strips of the MQ related headers and justs uses the IMS tran code + LLZZ + app data.
What I am trying to figure out, (without spending a huge amount of time chasing down the answer), is what is the default behavior of the OTMA bridge with the original message expiry ticks ? Does it generate a completely new MQ message on it's reply back from IMS to the distributed system - or is it smart enough to keep the expiry timeout value of the original request alive.
Extra points if someone can point me to a URL where I can find the documentation about how the OTMA bridge internals are explained.
(I found this OLD share PDF - but I don't think it's current)
http://shareweb.share.org/proceedings/sh96/data/S1176.PDF
Thanks!
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Bob Wilmes
Scottsdale, Arizona
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| PeterPotkay |
| Posted: Fri Apr 14, 2006 10:02 am Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7717
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Up until 5.3, the bridge forced an unlimited Expiry on the reply message, regardless of what the request message was.
This was fixed in MQ 5.3.1 on z/OS. It requires the sending application to set a flag in the IIH header asking the bridge to respect the request message's Expiry. I assume it stayed fixed in 6.0.
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Peter Potkay
Keep Calm and MQ On |
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| BobWilmes |
| Posted: Fri Apr 14, 2006 10:10 am Post subject: |
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Joined: 07 Aug 2001
Posts: 13
Location: Phoenix
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Peter - mega thank yous for the quick reply.
By any chance, do you happen to know the name of the IIH header flag ?
Regards,
Bob
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Bob Wilmes
Scottsdale, Arizona
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| wschutz |
| Posted: Fri Apr 14, 2006 10:12 am Post subject: |
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Jedi Knight
Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
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| BobWilmes |
| Posted: Fri Apr 14, 2006 10:24 am Post subject: |
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Novice
Joined: 07 Aug 2001
Posts: 13
Location: Phoenix
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Wayne - very much appreciated - thank you for your help and the link!
Have a great weekend everyone!
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Bob Wilmes
Scottsdale, Arizona
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