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Message
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| sebastia |
 Posted: Thu Feb 15, 2007 3:38 am Post subject: SVRCONN and CLNTCONN with the same name |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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I can see in lots of configuration samples in mqseries.net
that people have this DUPLICATED channel name ("TOSERVER" here)
one SVRCONN, the other CLNTCONN ...
? What advanteges does this config provide ?
S.
+++
DEFINE CHANNEL ('TOSERVER') CHLTYPE(SVRCONN) +
MCAUSER('Administrator') +
REPLACE
DEFINE CHANNEL ('TOSERVER') CHLTYPE(CLNTCONN) +
CONNAME('192.168.1.150(1414)') +
QMNAME('MQSERVER') +
REPLACE
+++ |
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| Gaya3 |
| Posted: Thu Feb 15, 2007 3:43 am Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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Hi
Naming conventions, Design tactics, re-usability, readable and meaningfull things have to be supplied
Hope you got what i am trying to say.
Thanks and Regards
Gayathri
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Regards
Gayathri
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Do Something Before you Die |
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| jefflowrey |
| Posted: Thu Feb 15, 2007 3:43 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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All MQ channels come in pairs.
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I am *not* the model of the modern major general. |
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| sebastia |
| Posted: Thu Feb 15, 2007 3:44 am Post subject: |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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What do they have THE SAME NAME ??????
No special purpose ? |
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| jefflowrey |
| Posted: Thu Feb 15, 2007 3:46 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Why do Sender and Receiver Channels have the same name?
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I am *not* the model of the modern major general. |
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| sebastia |
| Posted: Thu Feb 15, 2007 3:48 am Post subject: |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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Jeff : as far as I know, IBM's recomendation to name channels is
( if you are at QM "QMA", and want to communicate qith "QMB" )
*) sender channel : QMA.TO.QMB
b) receiver channel : QMB.TO.QMA
They never have the same name ! |
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| exerk |
| Posted: Thu Feb 15, 2007 3:51 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| sebastia wrote: |
Jeff : as far as I know, IBM's recomendation to name channels is
( if you are at QM "QMA", and want to communicate qith "QMB" )
*) sender channel : QMA.TO.QMB
b) receiver channel : QMB.TO.QMA
They never have the same name ! |
I think you may have misinterpreted...SDR/RCVR channel pairs always have the same name.
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It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| sebastia |
| Posted: Thu Feb 15, 2007 3:59 am Post subject: |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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mr EXERC -
the same channel has the same name on both ends of the channel,
so at machine "MA" and qm "QMA" it is "QMA.TO.QMB" (sender)
and at machine "MB" and qm "QMB" it is "QMA.TO.QMB" (receiver)
BUT when I started this thread, I said I find
ON THE SAME MACHINE
2 channels with the same name ...
DEFINE CHANNEL ('TOSERVER') CHLTYPE(SVRCONN) +
MCAUSER('Administrator') +
REPLACE
DEFINE CHANNEL ('TOSERVER') CHLTYPE(CLNTCONN) +
CONNAME('192.168.1.150(1414)') +
QMNAME('MQSERVER') +
REPLACE
Gues now it is more clear !!! |
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| exerk |
| Posted: Thu Feb 15, 2007 4:13 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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The CLNTCONN is published to a channel table file and is effectively one end of a pair of channels, the SVRCONN being the other part of the pair.
jefflowrey explained this very clearly in a recent thread, I suggest you search for it as he makes a clearer explanation than me.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| HubertKleinmanns |
| Posted: Thu Feb 15, 2007 4:17 am Post subject: |
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Shaman
Joined: 24 Feb 2004
Posts: 732
Location: Germany
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| sebastia wrote: |
mr EXERC -
the same channel has the same name on both ends of the channel,
so at machine "MA" and qm "QMA" it is "QMA.TO.QMB" (sender)
and at machine "MB" and qm "QMB" it is "QMA.TO.QMB" (receiver)
BUT when I started this thread, I said I find
ON THE SAME MACHINE
2 channels with the same name ...
DEFINE CHANNEL ('TOSERVER') CHLTYPE(SVRCONN) +
MCAUSER('Administrator') +
REPLACE
DEFINE CHANNEL ('TOSERVER') CHLTYPE(CLNTCONN) +
CONNAME('192.168.1.150(1414)') +
QMNAME('MQSERVER') +
REPLACE
Gues now it is more clear !!! |
sebastia,
you do not find the 2 channels with the same name, because the CLNTCONN is only defined in the client channel table. This file has to be copied to the MQ client system and then connects to the SVRCONN channel table.
(Delete or rename the file AMQCLCHL.TAB from the path /var/mqm/qmgrs/<your_qmgr>/@ipcc, and you should not see the CLNTCONN any longer.)
_________________
Regards
Hubert |
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| sebastia |
| Posted: Thu Feb 15, 2007 4:30 am Post subject: |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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Thanks, Hubert et al - I think I start to understand.
Will investigate a bit more
and come back with more news
( or not )
Thanks a lot everybody. S. |
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| sebastia |
| Posted: Thu Feb 15, 2007 7:24 am Post subject: |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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Well - I am back.
I had some advice from another (source of) GURU,
and what it says is
( and I want you to confirm it )
If MQ Server has only this sentence :
"DEFINE CHANNEL ('TOSERVER') CHLTYPE(SVRCONN) + "
then ANY MQ Client can connect to the MQ Server
using the SVRCONN channel.
But, if MQ Server also has this sentence
"DEFINE CHANNEL ('TOSERVER') CHLTYPE(CLNTCONN) +
CONNAME('192.168.1.150(1414)') "
... then ONLY the machine with the IP=192.168.1.50
will be able to connect to the MQ Server
using the SVRCONN channel.
>>> Is this sentence correct ?
Waiting for your comment ... Sebastian. |
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| exerk |
| Posted: Thu Feb 15, 2007 7:31 am Post subject: |
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Jedi Council
Joined: 02 Nov 2006
Posts: 6339
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| Quote: |
| CONNAME('192.168.1.150(1414)') |
What do you think might be defined in the CONNAME of a client connection channel definition?
I suggest you ask your guru to clarify what he told you, or read the Intercommunication Guide.
_________________
It's puzzling, I don't think I've ever seen anything quite like this before...and it's hard to soar like an eagle when you're surrounded by turkeys. |
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| sebastia |
| Posted: Thu Feb 15, 2007 7:39 am Post subject: |
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Grand Master
Joined: 07 Oct 2004
Posts: 1003
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mr exerc - in the coname we write a hostname or IP and a port.
The question still is : does this definition in the MQ Server
prevent machines with other IPs to connect using the SVRCONN ?
If so, I have discovered an interesting feature ...
If not, I am sorry about all this mess ... |
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| jefflowrey |
| Posted: Thu Feb 15, 2007 7:43 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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No, that's not true.
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I am *not* the model of the modern major general. |
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