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MQSeries.net Forum IndexGeneral IBM MQ SupportMSGS in DLQ

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tczielke
PostPosted: Fri Oct 13, 2017 10:18 am Post subject: Reply with quote

Yatiri

Joined: 08 Jul 2010
Posts: 652
Location: Illinois, USA

FYI - For your DLH example:

Code:

 00000000: 444C 4820 0100 0000 0408 0000 414D 512E 'DLH ........AMQ.'
 00000010: 3539 4334 4632 4443 3244 3736 4143 4632 '59C4F2DC2D76ACF2'
 00000020: 2020 2020 2020 2020 2020 2020 2020 2020 ' '
 00000030: 2020 2020 2020 2020 2020 2020 4D51 584C ' MQXL'
 00000040: 3036 5020 2020 2020 2020 2020 2020 2020 '06P '
 00000050: 2020 2020 2020 2020 2020 2020 2020 2020 ' '
 00000060: 2020 2020 2020 2020 2020 2020 2202 0000 ' "...'
 00000070: B804 0000 4D51 4144 4D49 4E20 0600 0000 '....MQADMIN ....'
 00000080: 616D 7170 6373 6561 0000 0000 0000 0000 'amqpcsea........'
 00000090: 0000 0000 0000 0000 0000 0000 3230 3137 '............2017'
 000000A0: 3130 3131 3138 3235 3439 3932 0200 0000 '101118254992....'
 000000B0: 2400 0000 0200 0000 2900 0000 0100 0000 '$.......).......'
 000000C0: 0100 0000 0000 0000 0000 0000 0B00 0000 '................'
 000000D0: 0400 0000 4400 0000 E007 0000 0000 0000 '....D...........'
 000000E0: 3000 0000 4756 2E44 454D 414E 442E 4341 '0...GV.DEMAND.CA'
 000000F0: 4348 452E 4341 532E 4552 524F 522E 5120 'CHE.CAS.ERROR.Q '


The reason code for this DLH is at offset 8 for 4 bytes = x'04080000'. This data is stored in little endian, so the bytes need to be reversed to x'00000804' = 2052. So a 2052 (Q_DELETED) caused this DLQ message to be written.
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bruce2359
PostPosted: Fri Oct 13, 2017 1:27 pm Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 7845
Location: US: west coast, almost. Otherwise, enroute.

paleyplease wrote:
Right so whats the purpose of these AMQ*

In the request-reply model, the replying app needs to have a queue to send its reply. The requesting app MQOPENs a QModel definition, and a dynamic reply-to-queue is created. The reply-to-queue lives only long enough (until it is MQCLOSEd or the app MQDISConnects) to satisfy the need for a reply message.

Dynamic queues relieves the sysadmin from manually creating queues for each request-reply app.

The default dynamic queue name will be AMQ. and a unique suffix if the app doesnt specify an alternative naming rule.
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