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MQSeries.net Forum Index » General IBM MQ Support » DISTL property in SYSTEM.CLUSTER.TRASNMIT.QUEUE

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saran3706
PostPosted: Wed Dec 04, 2013 8:44 pm    Post subject: DISTL property in SYSTEM.CLUSTER.TRASNMIT.QUEUE Reply with quote

Newbie

Joined: 21 Nov 2013
Posts: 7

Hi,

I am new to MQ and working in a clustered environment set up , I am unable to find out why we set DISTL property for SYSTEM.CLUSTER.TRASNMIT.QUEUE as DISABLED for few queue managers in the cluster.

Please explain the iimpact of setting this.

Thanks!
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bruce2359
PostPosted: Wed Dec 04, 2013 8:54 pm    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.

What does the DISTL attribute mean? What research have you done?
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saran3706
PostPosted: Wed Dec 04, 2013 9:34 pm    Post subject: Reply with quote

Newbie

Joined: 21 Nov 2013
Posts: 7

I understand that DISTL(distribution lists) enables the queue to send out messages to the mulitple destiantion queue managers using single MQOPEN call.This saves a lot of time and the burden on traffic.

For this to be applicable both the sender and receiving queue managers should have the DISTL property enabled.

If for one queue manager the DISTL property is set as 'diabled" then the messages will be sent one by one.

In some of the cases we have been asked to set up the "SYSTEM.CLUSTER.TRANSMIT.QUEUE with DISTL property as 'DISABLED".

I want to understand the advantages of setting up like this.
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bruce2359
PostPosted: Wed Dec 04, 2013 10:47 pm    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.

A distribution list is a programming construct. Search google for the application programming guide, and app programming reference, or InfoCenter equivalents.
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live.
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PeterPotkay
PostPosted: Thu Dec 05, 2013 3:21 am    Post subject: Reply with quote

Poobah

Joined: 15 May 2001
Posts: 7722

http://pic.dhe.ibm.com/infocenter/wmqv7/v7r5/topic/com.ibm.mq.ref.adm.doc/q085690_.htm

Quote:
Note: You do not normally change this parameter, because it is set by the MCA. However you can set this parameter when defining a transmission queue if the distribution list capability of the destination queue manager is known.

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bruce2359
PostPosted: Thu Dec 05, 2013 6:42 am    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.

A quick google search for 'what is an mq distribution list' resulted in this:
http://publib.boulder.ibm.com/infocenter/wmqv6/v6r0/index.jsp?topic=%2Fcom.ibm.mq.csqzal.doc%2Ffg12440_.htm
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elkinsc
PostPosted: Thu Dec 05, 2013 7:19 am    Post subject: Reply with quote

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Joined: 29 Dec 2004
Posts: 138
Location: Indy

Distribution lists are not supported on all platforms. It is recommended that applications use pub/sub rather than rely on distribution lists.
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