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MQSeries.net Forum Index » General IBM MQ Support » MQ - Jobs running parallely..

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naidu540
PostPosted: Mon Aug 31, 2009 1:51 am    Post subject: MQ - Jobs running parallely.. Reply with quote

Newbie

Joined: 31 Aug 2009
Posts: 1
I have two jobs one to PUT messages in Queue and Other to GET the reply messages from Queue. These two jobs should run paralley.My fisrt job which PUT the messages in Queue stops when there are no records in the input file. Can any one suggest me how to stop my second job? I need to get all the reply messages for all the requests i have PUT through the first job.
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exerk
PostPosted: Mon Aug 31, 2009 2:02 am    Post subject: Reply with quote

Jedi Council

Joined: 02 Nov 2006
Posts: 6339
As you are new, you get a fish...

Research MQRC2033 and MQGMO WaitInterval.
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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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gbaddeley
PostPosted: Mon Aug 31, 2009 4:19 pm    Post subject: Re: MQ - Jobs running parallely.. Reply with quote

Jedi Knight

Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
naidu540 wrote:
I have two jobs one to PUT messages in Queue and Other to GET the reply messages from Queue. These two jobs should run paralley.My fisrt job which PUT the messages in Queue stops when there are no records in the input file. Can any one suggest me how to stop my second job? I need to get all the reply messages for all the requests i have PUT through the first job.


You need some way of telling the GET job that it has got the last message that it needs to process?

Common techniques are to set an "indicator" on the last message (eg. special value of CorrelId) or to put a special message after the last message (eg. message data is 3 bytes "EOF").

WaitInterval plus test for MQRC_NO_MESSAGE_AVAILABLE is also a valid solution, provided the GET job can tolerate some dead time while it is waiting around for the interval to expire after the last message has been received. The question is: How long should you wait? What is the longest possible delay that the PUT job might experience delivering messages to the queue? 1 second? 10 seconds? 60 seconds?

Personally I prefer the indicator method.

HTH,
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