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MQSeries.net Forum Index » General IBM MQ Support » Can MQ prevent duplicate message?

Can MQ prevent duplicate message?

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fcho

Posted: Fri Aug 23, 2002 1:46 am Post subject: Can MQ prevent duplicate message?

Apprentice

Joined: 29 May 2002
Posts: 28

Hi,
Can any body tell me whether MQseries able to prevent duplicate message that post in queue by application? If can, how to do that?
Thanks.

bduncan

Posted: Fri Aug 23, 2002 8:59 am Post subject:

Padawan

Joined: 11 Apr 2001
Posts: 1554
Location: Silicon Valley

Yes. MQSeries guarantees delivery of each message. And MQSeries will NOT duplicate messages. There are some circumstances where MQSeries can't figure out whether it has sent a message (very rare) and awaits operator instruction whether to resend the message or not (RESET channel command). But as I said this only happens when certain network issues arise. In any case, you are protected against duplicate messages.
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Brandon Duncan
IBM Certified MQSeries Specialist
MQSeries.net forum moderator

PeterPotkay

Posted: Fri Aug 23, 2002 10:54 am Post subject:

Poobah

Joined: 15 May 2001
Posts: 7716

I read the question as "If AppA puts message #1 to QueueA, is there anyway MQ will prevent AppA from doing a second put of message#1 to QueueA?"

The answer to that question is no.
_________________
Peter Potkay
Keep Calm and MQ On

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