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MQSeries.net Forum IndexIBM MQ Installation/Configuration SupportMQ client 8.0.0.8 - Distributed transaction issues - Upgrade

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dakoroni
PostPosted: Tue Apr 28, 2020 5:07 am Post subject: MQ client 8.0.0.8 - Distributed transaction issues - Upgrade Reply with quote

Apprentice

Joined: 10 Jan 2020
Posts: 32

Hello MQ inst/support forum users,

I have a bank customer using MQ client 8.0.0.8 for .NET (v4.6.01590) based apps as well as several "tighted" bank services and flows (i.e. SwiftLiveService, DCTHealthMonitor, etc) and reported distributed transaction issues (I have no more details but i can find more info if needed).
There are apps creating many small transactions, other apps monitoring queues all the time and other apps having disitrbuted transactions such as: sql -> sql -> queue.

Customer considers that MQ client 8.0.0.8 doesn't subscribe to msdtc and ignores it..

The question is whether by upgrading to MQ client 8.0.0.14 the distributed transaction problems will be eliminated..

Pls notice that MQ build EoS defined at April 30th, 2020..

I assume the utlimate goal would be toupgrade MQ client to v9.1.x, but I am wondering which might be the limitations or implications to the apps (i.e. .NET upgrade)..

Any advise will be appreciated
Cheers Nick.
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exerk
PostPosted: Tue Apr 28, 2020 12:38 pm Post subject: Re: MQ client 8.0.0.8 - Distributed transaction issues - Upg Reply with quote

Jedi Council

Joined: 02 Nov 2006
Posts: 6153

dakoroni wrote:
...I assume the utlimate goal would be toupgrade MQ client to v9.1.x...

Correct...
dakoroni wrote:
...but I am wondering which might be the limitations or implications to the apps (i.e. .NET upgrade)...

Only the one the KC may mention, and what your testing of the application may reveal when recompiled using the newer libraries.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys.

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dakoroni
PostPosted: Wed Apr 29, 2020 12:21 am Post subject: Re: MQ client 8.0.0.8 - Distributed transaction issues - Upg Reply with quote

Apprentice

Joined: 10 Jan 2020
Posts: 32

Quote:

Only the one the KC may mention, and what your testing of the application may reveal when recompiled using the newer libraries.


Since several apps are involved, developers should be engaged in order to outline the problem precisely.
Cust. is not able to provide an accurate problem description (symptoms, errors, etc) for the moment, so I assume we can close this thread for now.

Thanks for yout time and response.
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fjb_saper
PostPosted: Wed Apr 29, 2020 5:30 am Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20263
Location: LI,NY

It is not the client by itself that needs to subscribe to the msdtc.
It is the .net code that must use the msdtc
Code:
using System.transactions
or whatever the correct way to do this in .NET is...
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dakoroni
PostPosted: Wed Apr 29, 2020 5:56 am Post subject: Reply with quote

Apprentice

Joined: 10 Jan 2020
Posts: 32

fjb_saper wrote:
It is not the client by itself that needs to subscribe to the msdtc.
It is the .net code that must use the msdtc
Code:
using System.transactions
or whatever the correct way to do this in .NET is...


Thanks for the important clarification.
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fjb_saper
PostPosted: Wed Apr 29, 2020 10:51 am Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20263
Location: LI,NY

dakoroni wrote:
fjb_saper wrote:
It is not the client by itself that needs to subscribe to the msdtc.
It is the .net code that must use the msdtc
Code:
using System.transactions
or whatever the correct way to do this in .NET is...


Thanks for the important clarification.

And don't forget to set up MSDTC for XA transactions on the MQ Server box.
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