Discussion:
MQGET question (was IBM Knowledge Center - MQ 7.5)
Tuben, Gregg
2014-06-04 14:41:42 UTC
Permalink
I would "guess" LIFO because it is easier to manage and with multiple processors and less list management is required. but definitely agree with Paul - don't count on it.

From: MQSeries List [mailto:MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org] On Behalf Of Tim Zielke
Sent: Wednesday, June 04, 2014 9:15 AM
To: MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org
Subject: Re: IBM Knowledge Center - MQ 7.5

I'm at the point where I am trying to download the PDFs, but can't do that either because my company firewalls are blocking the ftp. I'll have to do this at home later today. Frustrating . . .

Anyway, I was going to try and research the following, but I guess I'll ask the question.

I was under the impression that the following would happen with MQ.

Let's say we have two applications that both do a GET with a WAIT on the same queue that has no messages. App1 was the first to do the GET and App2 was the second.

When a message arrives, I was thinking App1 would be delivered the message since it did the GET first. Then let's say App1 would process the message and do another GET on this queue. If later another message arrives, App2 would be given the message since both apps are waiting with GETs on the queue, and App2 was next in line.

However, what I am seeing based on testing is that it is always the app that did that last GET that is delivered the message. So for the above example, App2 would get both messages and App1 would not be delivered any messages.

So is this the consistent behavior that the last app to do the GET will get the next available message? I guess I was assuming that MQ would honor the order that the apps did the GETs in.

Thanks,
Tim

From: MQSeries List [mailto:MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org] On Behalf Of Meekin, Paul
Sent: Wednesday, June 04, 2014 9:01 AM
To: MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org<mailto:MQSERIES-0lvw86wZMd9k/***@public.gmane.orgAC.AT>
Subject: Re: IBM Knowledge Center - MQ 7.5

Same here. I can't add more than 1 topic to My Collections and other errors. Keeps timing out too so maybe it's just bedding in...

From: MQSeries List [mailto:MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org] On Behalf Of Tim Zielke
Sent: 04 June 2014 14:59
To: MQSERIES-0lvw86wZMd9k/bWDasg6f+***@public.gmane.org<mailto:MQSERIES-0lvw86wZMd9k/***@public.gmane.orgAC.AT>
Subject: IBM Knowledge Center - MQ 7.5

Is anyone else having issues using the new IBM Knowledge Center for MQ 7.5? I can't even expand sections. It just clocks or gives me odd errors. I get this for both Internet Explorer and Firefox.

Thanks,
Tim

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