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MQSeries.net Forum Index » General IBM MQ Support » MQMD-Backout count

MQMD-Backout count

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anshumanmishra07

Posted: Mon Aug 22, 2016 3:56 am Post subject: MQMD-Backout count

Newbie

Joined: 21 Jun 2016
Posts: 4

I am new to MQ, trying to understand the MQMD components.
What is exactly MQMD-Backout count?

PS: Sorry for this silly question

mqjeff

Posted: Mon Aug 22, 2016 4:01 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

You can think of backout count as a retry count.

MQ allows you to do a local or XA transaction with a queue - and roll back the message onto the queue if your processing fails.

The backout count is the number of times that a message should be tried before it is moved to a backout queue.

But there are several conditions and setup that need to occur before the backout count will be used. It's not an automatic function of all programs using MQ - each program needs to use logic to handle this by checking the backout count on a message, and using the backout queue to move the message out so it won't get tried any more.
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