fyi,
I just encountered a strange problem where a channel failure did not result
in a channel event being generated. I didn't realize we had a problem
until an application generated an email informing me of a connection
problem. IBM says this is a known problem.
----- Forwarded by Richard Tsujimoto/Consultant-NewYork/CanonUSA on
04/26/2004 03:07 PM -----
mqseries
<[EMAIL PROTECTED] To: [EMAIL PROTECTED]
.com> cc:
Sent by: Erica D Subject: pmr# 72499,7td attn; Erica
Hatchell
<[EMAIL PROTECTED]
.com>
04/26/2004 02:53
PM
Please respond
to mqseries
Hi Richard,
This looks to be a known issue.
.
1474.PRB
When are Channel Stopped Events (MQRC_CHANNEL_STOPPED (2283, X'8EB')
generated?
.
The behaviour has changed since the introduction of IC29815
so that "Channel Stopped" events are only generated when the
channel program itself generates a stopped event. Customers
will therefore find that if a channel goes straight into a
retry mode after it is started, they will not get a
MQRC_CHANNEL_STOPPED event with MQRQ_CHANNEL_STOPPED_RETRY.
The confusing issue is that an MQRC_CHANNEL_STARTED event
is written to the SYSTEM.ADMIN.CHANNEL.EVENT queue when the
channel is started via runmqsc or the MQSeries Explorer, even
if the channel isn't actually able to initialize a conversation
with the remote end.
The difference between the event generated by runmqsc/explorer
and the channel process is that you can see the name of the
process in the PutApplName:
PutApplName : 'ebSphere MQ\bin\runmqchl.EXE'
OR
PutApplName : 'ebSphere MQ\bin\AMQPCSEA.EXE'
Additionally the MQCFH will contain a blank conname if the channel
process hasn't generated the event e.g:
00000000: 0700 0000 2400 0000 0100 0000 2E00 0000 '....$...........'
00000010: 0100 0000 0100 0000 0000 0000 EA08 0000 '............Û...'
00000020: 0200 0000 0400 0000 1800 0000 DF07 0000 '............?...'
00000030: 0000 0000 0400 0000 464F 4E5A 0400 0000 '........FONZ....'
00000040: 2400 0000 AD0D 0000 0000 0000 0D00 0000 '$...¡...........'
00000050: 464F 4E5A 2E54 4F2E 5249 4348 3300 0000 'FONZ.TO.RICH3...'
As opposed the the following MQCFH when the channel process has been
started:
00000000: 0700 0000 2400 0000 0100 0000 2E00 0000 '....$...........'
00000010: 0100 0000 0100 0000 0000 0000 EB08 0000 '............Ù...'
00000020: 0B00 0000 0400 0000 1800 0000 DF07 0000 '............?...'
00000030: 0000 0000 0400 0000 464F 4E5A 0400 0000 '........FONZ....'
00000040: 2400 0000 AD0D 0000 0000 0000 0D00 0000 '$...¡...........'
00000050: 464F 4E5A 2E54 4F2E 5249 4348 3300 0000 'FONZ.TO.RICH3...'
00000060: 0400 0000 2000 0000 B10D 0000 0000 0000 '.... ...?.......'
00000070: 0B00 0000 5249 4348 2E58 4D49 5451 3300 '....RICH.XMITQ3.'
00000080: 0400 0000 2400 0000 B20D 0000 0000 0000 '....$...?.......'
00000090: 1000 0000 392E 3230 2E39 332E 3636 2831 '....9.20.93.66(1'
000000A0: 3431 3529 0300 0000 1000 0000 FC03 0000 '415)........³...'
000000B0: 0700 0000 0300 0000 1000 0000 F503 0000 '............§...'
000000C0: 4595 0000 0300 0000 1000 0000 2E04 0000 'Eò..............'
000000D0: 0000 0000 0300 0000 1000 0000 2F04 0000 '............/...'
000000E0: 0000 0000 0400 0000 2400 0000 D20B 0000 '........$...Ê...'
000000F0: 0000 0000 0D00 0000 464F 4E5A 2E54 4F2E '........FONZ.TO.'
00000100: 5249 4348 3300 0000 0400 0000 1400 0000 'RICH3...........'
00000110: D30B 0000 0000 0000 0000 0000 0400 0000 'Ë...............'
00000120: 1400 0000 D40B 0000 0000 0000 0000 0000 '....È...........'
Future releases of MQSeries will provide a Channel stanza
tuning parameter StopEvent = Always, which will revert to the
old behaviour of always generating a STOP event.
Regards Erica,
MQSeries Level 2 Support - Distributed Platforms
Email: [EMAIL PROTECTED]
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