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| matth |
 Posted: Fri Sep 27, 2019 11:02 am Post subject: Messages stalled on XMITQ |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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Hi:
I have an MQSeries 8.0.0.0 running on Windows server. In some XMITQ queues current depth shows some (circa 10) messages which are stalled. They are strange because channel sender/receiver still running and all other messages runs well (dozens/day).
I browse some messages and they seens to be reply-to-queue COD/COA messages and Message Identifier Column seens to be corrupt.
[img]https://uploaddeimagens.com.br/imagens/mqseries-png[/img]
Regard´s |
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| bruce2359 |
| Posted: Fri Sep 27, 2019 12:39 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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I believe you are looking at the transmission queue header (XQH).
When an app MQPUTs a message to a transmission queue, the qmgr inserts an XQH into the package put to the xmit queue. The XQH has its own MQMD and Rname and RQMname - the destination of the message, along with your apps MQMD and data payload.
The xqh is used for routing purposes. The CorrelId of the XQH identifies the destination where the msg will be delivered. Looks ok to me. Look further into the message to see your app MQMD and data.
A likely possibility why the msgs have not been transmitted is that the MQPUTting app has not yet committed the mags in the UofW.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| gbaddeley |
| Posted: Sun Sep 29, 2019 4:20 pm Post subject: Re: Messages stalled on XMITQ |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| matth wrote: |
Hi:
I have an MQSeries 8.0.0.0 running on Windows server. In some XMITQ queues current depth shows some (circa 10) messages which are stalled. They are strange because channel sender/receiver still running and all other messages runs well (dozens/day).
I browse some messages and they seens to be reply-to-queue COD/COA messages and Message Identifier Column seens to be corrupt.
[img]https://uploaddeimagens.com.br/imagens/mqseries-png[/img]
Regard´s |
The image is blocked, I can't view it. What makes you think the msg id is corrupt? The sender MCA does not actually use this field when sending a msg. What is in the MQXQH for these msgs?
If it bothers you, stop the channel, get enable the queue, move the msgs to a backup queue for close analysis, and start the channel.
_________________
Glenn |
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| bruce2359 |
| Posted: Sun Sep 29, 2019 5:56 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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matth: Please display a few messages using supplied utility amqsbcg. I'm interested in the MQMD and XQH that precedes your data (MQMD, other headers, your app data payload.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| matth |
| Posted: Mon Sep 30, 2019 11:46 am Post subject: |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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Hi Guys:
I believe they are corrupted, because are composed from non printable characters. I tried to copy-paste it here, but forum config (!?!) blocks it. I tried to use print-screen, but I believe made something wrong. I´ll try another way soon. |
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| matth |
| Posted: Mon Sep 30, 2019 12:11 pm Post subject: |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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| (The image server seens to be up (now)) |
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| hughson |
| Posted: Mon Sep 30, 2019 1:48 pm Post subject: |
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Padawan
Joined: 09 May 2013
Posts: 1959
Location: Bay of Plenty, New Zealand
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| matth wrote: |
| I believe they are corrupted, because are composed from non printable characters. I tried to copy-paste it here, but forum config (!?!) blocks it. I tried to use print-screen, but I believe made something wrong. I'll try another way soon. |
The image you posted only shows non-printable characters in the Correlation identifier.
The Correlation identifier field is not actually a string field, it is a bytes field, and so non-printable characters are to be expected when trying to display this field as a string. A little to the right of the column in question is the bytes display of the same field. Look in there to view all the bytes that make up the Correlation identifier and you will understand why some are non-printable.
To reiterate, this is not corruption, this is normal behaviour for generated Correlation identifiers.
Cheers,
Morag
_________________
Morag Hughson @MoragHughson
IBM MQ Technical Education Specialist
Get your IBM MQ training here!
MQGem Software |
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| matth |
| Posted: Tue Oct 01, 2019 2:50 am Post subject: |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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| Ok, but returning to original question. Why these messages stay on XMITQ? What may I look to identify message problem? |
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| HubertKleinmanns |
| Posted: Tue Oct 01, 2019 3:14 am Post subject: |
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Shaman
Joined: 24 Feb 2004
Posts: 732
Location: Germany
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| matth wrote: |
| Ok, but returning to original question. Why these messages stay on XMITQ? What may I look to identify message problem? |
As bruce2359 already asked: Please display a few messages using supplied utility amqsbcg.
_________________
Regards
Hubert |
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| bruce2359 |
| Posted: Tue Oct 01, 2019 5:46 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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Also, display the xmitq. What is the value of UNCOM?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| matth |
| Posted: Tue Oct 01, 2019 10:28 am Post subject: |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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| bruce2359 wrote: |
| Also, display the xmitq. What is the value of UNCOM? |
What means UNCOM? Is it a property of Queue? Message? Queue Status?
[]´s |
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| bruce2359 |
| Posted: Tue Oct 01, 2019 10:35 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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| matth wrote: |
| bruce2359 wrote: |
| Also, display the xmitq. What is the value of UNCOM? |
What means UNCOM? Is it a property of Queue? Message? Queue Status?
[]´s |
Queue status. Whether or not there are uncommitted messages in the xmit queue. Messages put to a queue in UofW’s must be committed before they can be sent down the channel.
https://www.ibm.com/support/knowledgecenter/en/SSFKSJ_8.0.0/com.ibm.mq.ref.adm.doc/q086260_.htm
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| matth |
| Posted: Wed Oct 02, 2019 6:08 am Post subject: |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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I may ask for amqsbcg of trouble queue, but if I post here, forum blocks it because content have special chars.
Att, |
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| matth |
| Posted: Wed Oct 02, 2019 6:09 am Post subject: |
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Apprentice
Joined: 13 Feb 2007
Posts: 44
Location: Brazil
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| matth wrote: |
I may ask for amqsbcg of trouble queue, but if I post here, forum blocks it because content have special chars.
Att, |
Uncommited Messages: No |
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| bruce2359 |
| Posted: Wed Oct 02, 2019 6:12 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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| matth wrote: |
I may ask for amqsbcg of trouble queue, but if I post here, forum blocks it because content have special chars.
Att, |
How does the forum block you? Is there an error message?
How are you posting the output from amqsbcg? Copy and paste text? Screen scrape? Something else? AFIK, mqseries.net doesn’t impose character restrictions. Please use text copy and paste.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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