MQSeries.net :: View topic - Administration Query: Found question in the Forum

kakkarjatin · Posted: Tue Oct 04, 2005 3:02 am Post subject:

Hi All,

I got this question from the forums and it was answered by few of my mates. I was having a small confusion and thats why i raised my concern.

I have full faith on you and request you to please help me in this regard.

The following shows three scripts for the RUNMQSC utility which define
various queues and channels, and which customise the queue manager.

The three queue managers are running on three machines.
These are:
1 - a Sales Office - queue manager SalesOfficeQM
2 - an Order Processing system - queue manager OrdersQM
3 - an Invoicing system - queue manager InvoiceQM

All three queue managers are interconnected.

The first queue manager runs the Sales Office.
This can send messages to both the Order
Processing system and the Invoicing system.

Sales Office - queue manager SalesOfficeQM
==========================================

ALTER QMGR DEFXMITQ('XmitOrdersQM') DEADQ('SalesOfficeQM.Dead.L.Queue')
DEFINE QLOCAL('SalesOfficeQM.Dead.L.Queue')

DEFINE QALIAS('PriorityOEntry') TARGQ('OnlineOEntry') DEFPRTY(5)
DEFINE QALIAS('BatchOEntry') TARGQ('OrderEntry') DEFPRTY(1)
DEFINE QALIAS('OnlineOEntry') TARGQ('OrderEntry') DEFPRTY(3)

DEFINE QREMOTE('OrderEntry') RNAME('OEntryQ') RQMNAME('OrdersQM') +
XMITQ('XmitOrdersQM')
DEFINE QREMOTE('InvoiceQry') RNAME('IInquiryQ') RQMNAME('InvoiceQM') +
XMITQ('XmitInvoiceQM')
DEFINE QREMOTE('InvoiceUpd') RNAME('IUpdateQ') RQMNAME('InvoiceQM') +
XMITQ('XmitInvoiceQM')
DEFINE QREMOTE('InvoiceQry.Fast') RNAME('IInquiryQ') RQMNAME('InvoiceQM') +
XMITQ('XmitInvoiceQM.Fast')
DEFINE QREMOTE('Invoicing') RNAME() RQMNAME('XmitInvoiceQM')

DEFINE QLOCAL('XmitOrdersQM') USAGE(XMITQ)
DEFINE QLOCAL('XmitInvoiceQM') USAGE(XMITQ)
DEFINE QLOCAL('XmitInvoiceQM.Fast') USAGE(XMITQ)

DEFINE CHANNEL(SOQM.2.ORDQM) CHLTYPE(SDR) XMITQ('XmitOrdersQM')
DEFINE CHANNEL(SOQM1.2.INVQM1) CHLTYPE(SDR) XMITQ('XmitInvoiceQM')
DEFINE CHANNEL(SOQM2.2.INVQM2) CHLTYPE(SDR) XMITQ('XmitInvoiceQM.Fast')

The second queue manager runs the Order Processing system.
This receives messages from the Sales Office and can
send messages to the Invoicing system.

Order Processing System - queue manager OrdersQM
================================================

ALTER QMGR DEFXMITQ('XmitInvoiceQM') DEADQ('OrdersQM.Dead.L.Queue')
DEFINE QLOCAL('OrdersQM.Dead.L.Queue')

DEFINE QLOCAL('OEntryQ')
DEFINE QLOCAL('OInquiryQ')

DEFINE QREMOTE('InvoiceInqQ') RNAME('InvoiceInqQ') +
RQMNAME('InvoiceQM') XMITQ('XmitInvoiceQM')
DEFINE QREMOTE('InvoiceInqQ.Fast') RNAME('IInquiryQ') +
RQMNAME('InvoiceQM') XMITQ('XmitInvoiceQM.Fast')

DEFINE QLOCAL('XmitInvoiceQM') USAGE(XMIT)

DEFINE CHANNEL(SOQM.2.ORDQM) CHLTYPE(RCVR)
DEFINE CHANNEL(ORDQM.2.INVQM) CHLTYPE(SDR) XMITQ('XmitInvoiceQM')

The third queue manager runs on the invoicing system.
This has links from both the Sales Office and the
Order Processing system

Invoicing System - queue manager InvoiceQM
==========================================

ALTER QMGR DEADQ('InvoiceQM.Dead.L.Queue')
DEFINE QLOCAL('InvoiceQM.Dead.L.Queue')

DEFINE QLOCAL('IInquiryQ')
DEFINE QLOCAL('IUpdateQ')

DEFINE CHANNEL(SOQM1.2.INVQM1) CHLTYPE(RCVR)
DEFINE CHANNEL(SOQM2.2.INVQM2) CHLTYPE(RCVR)
DEFINE CHANNEL(ORDQM.2.INVQM) CHLTYPE(RCVR)

An application running in the Sales Office does a PUT1 of a message, setting queue name to 'IInquiryQ' and queue manager name

to 'InvoiceQM'. What is the final destination of the message?

A. queue IInquiryQ on queue manager InvoiceQM

B. queue InvoiceQM.Dead.L.Queue on queue manager InvoiceQM

C. queue OrdersQM.Dead.L.Queue on queue manager OrdersQM

D. The put fails with MQRC_UNKNOWN_XMIT_Q

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EddieA
grand master

Joined: 28 Jun 2001
Posts: 1746
Location: Los Angeles

PostPosted: Tue Sep 09, 2003 7:03 am Post subject: Reply with quote
I recognise those. They're from the Sample test.

1. C

__________________________________________________________
My Answers
___________________________________________________________

The question has the following definitions

For Queue Manager SalesOfficeQM

ALTER QMGR DEFXMITQ('XmitOrdersQM') DEADQ('SalesOfficeQM.Dead.L.Queue')

and for Queue Manager OrdersQM we have

ALTER QMGR DEFXMITQ('XmitInvoiceQM') DEADQ('OrdersQM.Dead.L.Queue')

As per my understanding the when the message is put from an application connected to SalesOfficeQM, with queue as IInquiryQ and queue manager as 'InvoiceQM' defined in the object descriptor, it looks for a xmitq queue since its not being directly destined for any remote queue. It does not find a xmitq matching the name iof remote queue manager, it chooses the default xmit queue as mentioned above i.e XmitOrdersQM.

The message is then being sent to OrdersQM . The OrdersQM checks that the message is destined for Invoice QM. The xmitq queue with the name InvoiceQM does not exist so the message is again put into the default xmitq i.e XmitInvoiceQM of the OrdersQM and finally the message is sent to InvoiceQM.

So the answer shud be option (A)

Please correct me if I am wrong.

Thanks in advance.
_________________
Regards,
Jatin Kakkar
IBM WMQ V5.3 System Administrator Certified
Brainbench Master Certification in WebSphere MQ
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