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| chandu |
 Posted: Wed Aug 05, 2009 9:21 am Post subject: DISTRIBUTED QUEUING CONCEPTS |
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Novice
Joined: 05 Aug 2009
Posts: 16
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In distributed queueing,
where does the messages go if local queue which retrives the messages is not accepting any messages or if No local queue is present.
i tried experimenting but i dont see it even in the dead letter queue. |
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| shashivarungupta |
| Posted: Wed Aug 05, 2009 9:33 am Post subject: Re: DISTRIBUTED QUEUING CONCEPTS |
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Grand Master
Joined: 24 Feb 2009
Posts: 1343
Location: Floating in space on a round rock.
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| chandu wrote: |
In distributed queueing,
where does the messages go if local queue which retrives the messages is not accepting any messages or if No local queue is present.
i tried experimenting but i dont see it even in the dead letter queue. |
| Quote: |
| i tried experimenting but i dont see it even in the dead letter queue. |
how did you try this ?
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| if No local queue is present. |
you or application connecting to QM for putting/getting the message(s) would give exception. with mqrc 2085.
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| if local queue which retrives the messages is not accepting any messages |
There are some scenarios when queue is not accepting the messages. you better check out the RedBooks on MQ basics. and hit the properties of the Queue.
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| shashivarungupta |
| Posted: Wed Aug 05, 2009 9:50 am Post subject: Re: DISTRIBUTED QUEUING CONCEPTS |
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Grand Master
Joined: 24 Feb 2009
Posts: 1343
Location: Floating in space on a round rock.
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| chandu wrote: |
| but i dont see it even in the dead letter queue. |
try out remote queue scenario to put the message(s).
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| chandu |
| Posted: Wed Aug 05, 2009 9:58 am Post subject: |
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Novice
Joined: 05 Aug 2009
Posts: 16
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I put the message on remote queue(RQ) defined on QMGR_A.But there is no local queue defined on QMGR_B.I did all the above in the MQ explorer.It did not generate any error message.
Question:
Where do u think the message might go into.I mean what is the queue in which i need to checkout?
Does it go into any of the system defined queues?if so,what is the name of the queue? |
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| bruce2359 |
| Posted: Wed Aug 05, 2009 10:40 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| I put the message on remote queue(RQ) defined on QMGR_A. |
No. The QR definition must point to a xmit queue.
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| But there is no local queue defined on QMGR_B.I did all the above in the MQ explorer. |
If a message cannot be delivered down the network (assuming it went down the network), it will end up in a dlq - if there is one.
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| It did not generate any error message. |
Working as designed - no error messages are created.
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| Question: Where do u think the message might go into.I mean what is the queue in which i need to checkout? |
xmit queue waiting to be sent; destination queue down the network, or dlq down the network. If the qmgr has a default-xmit-queue, look there, too.
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| Does it go into any of the system defined queues?if so,what is the name of the queue? |
No.
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| Vitor |
| Posted: Wed Aug 05, 2009 11:10 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| bruce2359 wrote: |
| No. The QR definition must point to a xmit queue. |
No it doesn't - it points to a local queue on a different queue manager. It might optionally include the name of an xmitq to use.
| bruce2359 wrote: |
| If a message cannot be delivered down the network (assuming it went down the network), it will end up in a dlq - if there is one. |
And if it can't go down the network it'll sojourn in the xmitq.
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| mqjeff |
| Posted: Wed Aug 05, 2009 11:34 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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Non-persistent messages that can not be delivered go nowhere, or the app gets an MQRC that indicates the message was not accepted by MQ.
Persistent messages that can not be delivered go to the DLQ or the app gets an MQRC that indicates that the message was not accepted by MQ. |
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| bruce2359 |
| Posted: Wed Aug 05, 2009 12:27 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| No it doesn't - it points to a local queue on a different queue manager. It might optionally include the name of an xmitq to use. |
I will be much more careful in my wording...
In order for a message to travel across a point-to-point channel, it must originate in an xmit queue. The usual method of an application MQPUTting a message into an xmit queue is to MQOPEN a QRemote definition, which either EXPLICITLY names the xmitq in the XMITQ() attribute, or does so implicitly by the RQMNAME() attribute, or the default xmit queue named in the qmgr object.
The QR(name) the application opens may or may not be the name of the local queue down the network. The RNAME() attribute of the QR definition, if present, populates the transmission queue header (XQH).
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| PeterPotkay |
| Posted: Wed Aug 05, 2009 7:44 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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| mqjeff wrote: |
| Non-persistent messages that can not be delivered go nowhere |
..If the channel has NPMSPEED set to FAST. If the channel speed is set to NORMAL, then the non-deliverable, non-persistent message will not be discarded.
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| Mr Butcher |
| Posted: Thu Aug 06, 2009 12:41 am Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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chandu,
i suggest you first make your sample work, define the qlocal on QMGR_B, then send your message from QMGR_A and check if it ends up in the qlocal on QMGR_B. If that works, then
* put-disable the qlocal on QMGR_B
* check QMGRB and verify there is a dead letter queue defined in the DEADQ attribute of the qmgr and that this local queue exists on QMGR_B
* put your message again from QMGR_A and it should end up in the dead letter queue on QMGR_B, (no matter of channel npmspeed and message persistence)
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| chandu |
| Posted: Sat Aug 15, 2009 11:18 pm Post subject: |
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Novice
Joined: 05 Aug 2009
Posts: 16
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Ok,i will try making out all possibilities and let u know the result.
But one thing,
if a REMOTEQ and DLQ is not defined on QMGR_B and if the messaging type is persistent,then where does the message sent by QMGR_A goes?
I did the above on Windows XP MQ explorer through GUI.It did not generate any error while sending the message from QMGR_A. |
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| fjb_saper |
| Posted: Sun Aug 16, 2009 3:02 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| chandu wrote: |
Ok,i will try making out all possibilities and let u know the result.
But one thing,
if a REMOTEQ and DLQ is not defined on QMGR_B and if the messaging type is persistent,then where does the message sent by QMGR_A goes?
I did the above on Windows XP MQ explorer through GUI.It did not generate any error while sending the message from QMGR_A. |
What was the status of your channel?
Once the channel was stopped what was the content of the xmitq?
you need to  the intercommunications manual  
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