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How to view MAXINSTC in real time

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ccarrillo

Posted: Mon Aug 07, 2017 9:16 am Post subject: How to view MAXINSTC in real time

Newbie

Joined: 28 Oct 2016
Posts: 9

Hi guys, i have a question, How can i get the MAXINSTC value for a Channel on real time, in other words, how many Instances clients are connected for a particular Channel, thanks for your responses.

PaulClarke

Posted: Mon Aug 07, 2017 9:35 am Post subject:

Grand Master

Joined: 17 Nov 2005
Posts: 1002
Location: New Zealand

Well, essentially you need to issue a DISPLAY CHSTATUS and add up all the values of CURSHCNV. I'm afraid the base IBM MQ product won't do that for you. In other words there is no command to return you a single number. If you have something like MQSCX then you can easily write a simple script to do it - in fact it is one of the examples in our discussion regarding adding up values, read here https://mqgem.wordpress.com/2016/07/19/adding-up/ if you are interested.

Of course you mention MAXINSTC rather than MAXINST so you would change the DISPLAY CHSTATUS command to only return responses from a single client machine.

Cheers,

Paul
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Paul Clarke
MQGem Software
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abhi_thri

Posted: Thu Aug 10, 2017 12:18 am Post subject:

Knight

Joined: 17 Jul 2017
Posts: 516
Location: UK

We used the AMQ8417 checked mentioned at below link to count channel connections.

http://www-01.ibm.com/support/docview.wss?uid=swg21449463

eg:-
echo "DISPLAY CHSTATUS(CHLNAME)" | runmqsc QMGR | grep 'AMQ8417' | wc -l

fjb_saper

Posted: Thu Aug 10, 2017 5:02 am Post subject:

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

abhi_thri wrote:

I think the assumption here is shcnv = 0 or shcnv = 1 on the channel definition...

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hughson

Posted: Thu Aug 10, 2017 1:25 pm Post subject:

Padawan

Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand

fjb_saper wrote:

abhi_thri wrote:

I think the assumption here is shcnv = 0 or shcnv = 1 on the channel definition...

Well, MAXINST and MAXINSTC don't care about how many conversations are shared over the channel, they are ONLY counting how many running channels you have. Ditto MaxChannels.

See https://mqgem.wordpress.com/2016/06/23/maxchannels-vs-dis-qmstatus-conns/ for further discussion on this.

Cheers
Morag
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Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
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