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mb01mqbrkrs
PostPosted: Thu Jul 04, 2013 11:16 pm    Post subject: MQ & WebSphere Business Monitor Reply with quote

Apprentice

Joined: 18 Nov 2011
Posts: 48
IBM have an interesting technote regarding the requirement of BM to receive messages in sequence. Is this an example of IBM not following best practice for a Message Driven application?

http://www-01.ibm.com/support/docview.wss?uid=swg21641963&myns=swgws&mynp=OCSS7NQD&mynp=OCSSKM8N&mynp=OCSSSRR3&mynp=OCSSFKSJ&mync=R
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smdavies99
PostPosted: Thu Jul 04, 2013 11:50 pm    Post subject: Reply with quote

Jedi Council

Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
IMHO, not really.

The note describes some cases where an END event message might arrive before the START event message.

If you are old and grey (like me) you will know all about this sort of problem from the days of X.25 with its PAD's etc.

Networks are funny things.
If you have multiple routes and multiple hops between the originating system and the BM system AND where the routes/hops are shared with other types of days then yes, you could encounter this issue. You encounter a form of 'elasticity' between point A and point B. I first saw this described in the Mid 1970's so it is nothing new.

Is this a problem with your environment?
_________________
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Linux user since 1995

Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions.
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mqjeff
PostPosted: Fri Jul 05, 2013 7:09 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447
There's a number of ways to resolve the issue mentioned in the technote, including the very first one that says "use the features of Business Monitor designed to deal with this situation".

There's a long list of versions of BM that the technote applies to, it may be fixed in versions newer than that.

Not really sure what you're making noise about?
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