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MQSeries.net Forum Index » General IBM MQ Support » QM was stopped due to resource contrain

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Aravindh
PostPosted: Wed Jul 28, 2021 8:57 pm    Post subject: QM was stopped due to resource contrain Reply with quote

Newbie

Joined: 07 Apr 2021
Posts: 9

An FDC file was created with 30GB, which cause queue manager directory full, then QM was stopped.

Kindly help to know why such huge files are creating.
Code:

+-----------------------------------------------------------------------------+
|                                                                             |
| WebSphere MQ First Failure Symptom Report                                   |
| =========================================                                   |
|                                                                             |
| Date/Time         :- Wed July 28 2021 22:42:05 CEST                         |
| UTC Time          :- 1627504925.998051                                      |
| UTC Time Offset   :- 120 (CET)                                              |
| Host Name         :-                                            |
| Operating System  :- Linux 2.6.32-754.35.1.el6.x86_64                       |
| PIDS              :- 5724H7230                                              |
| LVLS              :- 7.5.0.9                                                |
| Product Long Name :- WebSphere MQ for Linux (x86-64 platform)               |
| Vendor            :- IBM                                                    |
| Installation Path :- /opt/mqm                                               |
| Installation Name :- Installation1    (1)                                   |
| License Type      :- Production                                             |
| Probe Id          :- XC441020                                               |
| Application Name  :- MQM                                                    |
| Component         :- xstGetNextExtentId                                     |
| SCCS Info         :- /build/slot1/p750_P/src/lib/cs/amqxstua.c,             |
| Line Number       :- 1214                                                   |
| Build Date        :- Aug 30 2018                                            |
| Build Level       :- p750-009-180830                                        |
| Build Type        :- IKAP - (Production)                                    |
| Effective UserID  :- 10040 (mqm)                                            |
| Real UserID       :- 10040 (mqm)                                            |
| Program Name      :- amqzlaa0                                               |
| Arguments         :- -m -fip40                                       |
| Addressing mode   :- 64-bit                                                 |
| LANG              :- en_US.UTF-8                                            |
| Process           :- 24572                                                  |
| Process(Thread)   :- 3830                                                   |
| Thread            :- 688917                                                 |
| ThreadingModel    :- PosixThreads                                           |
| QueueManager      :- IMPLL97                                                |
| UserApp           :- FALSE                                                  |
| ConnId(1) IPCC    :- 1822735397                                             |
| ConnId(2) QM      :- 15810291                                               |
| Last HQC          :- 2.5.5-18110616                                         |
| Last HSHMEMB      :- 2.10.10-54886448                                       |
| Major Errorcode   :- xecF_E_UNEXPECTED_RC                                   |
| Minor Errorcode   :- OK                                                     |
| Probe Type        :- MSGAMQ6118                                             |
| Probe Severity    :- 2                                                      |
| Probe Description :- AMQ6118: An internal WebSphere MQ error has occurred   |
|   (0)                                                                       |
| FDCSequenceNumber :- 387256                                                 |
|                                                                             |
+-----------------------------------------------------------------------------+
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fjb_saper
PostPosted: Thu Jul 29, 2021 4:39 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20696
Location: LI,NY

Well you may have come to a point where there is an APAR for the problem you are experiencing but your version is long gone out of support (MQ 7.5.0.9).
Get on a supported version (9.2.0.x)!
You were also told to create different mount points for /var/mqm/errors, /var/mqm/trace, /var/mqm/qmgrs ... to avoid such a problem...
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bruce2359
PostPosted: Thu Jul 29, 2021 7:18 am    Post subject: Re: QM was stopped due to resource contrain Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9394
Location: US: west coast, almost. Otherwise, enroute.

Aravindh wrote:
An FDC file was created with 30GB, which cause queue manager directory full, then QM was stopped.

Kindly help to know why such huge files are creating.

File system disk space is one of the resources critical for MQ operation. A more important question, rather than 'why such huge files', should be 'why didn't I/we know that we were running out of file system space?'

The UNIX df command (or du command) run frequently could have alerted you to expand the file system in advance.

It is likely that your elderly MQ vrmf experienced failures resulting in FDC files being created. Your MQ and qmgr error log will have contained error messages about each FDC generated.

Monitoring file system space and MQ FDC's are few of the responsibilities of the MQ system admin.

What, if any, monitoring tool do you use?
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Andyh
PostPosted: Thu Jul 29, 2021 11:53 am    Post subject: Reply with quote

Master

Joined: 29 Jul 2010
Posts: 237

In this case the FDC header alone isn't really enough to venture an opinion as to what might be wrong.
It would be nice if there was some shared location where FDC's could be placed so that the issue of very incomplete FDC information being presented with a "what does this tell me" message were less common. Clearly anyone submitting such an FDC would have to convince themselves that the data being posted did not compromise their privacy/security, and perhaps clean the FDC's before posting.

The FDC sequence number in this header shows that this process creating this file has been repeatedly FDC'ing, and now includes a huge number of FDC's, suggesting that this particular FDC file may have been growing for quite some time! I the same probeId, or sequence of probeId's is repeated then typically only the first instance of each sequence is of interest.
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gbaddeley
PostPosted: Thu Jul 29, 2021 4:32 pm    Post subject: Re: QM was stopped due to resource contrain Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2492
Location: Melbourne, Australia

Aravindh wrote:
An FDC file was created with 30GB, which cause queue manager directory full, then QM was stopped.

Hi Aravindh. The queue manager was experiencing a repeated internal error. Because you don't have disk usage monitoring for directories in /var/mqm, or monitoring for FDC error files, it eventually filled up the disk. Full disks are very bad for MQ, as you found out.
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Aravindh
PostPosted: Sun Aug 01, 2021 10:44 pm    Post subject: thank you Reply with quote

Newbie

Joined: 07 Apr 2021
Posts: 9

Thank you all for your response
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