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| Message Exits attributes on z/OS Channels |
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| bay hoe san |
 Posted: Wed Mar 19, 2008 9:39 am Post subject: Message Exits attributes on z/OS Channels |
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Centurion
Joined: 27 Nov 2006
Posts: 117
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Hello,
( 1) I need advice. On the receiver channel, there is an attribute "Message Exits", under it, there are 2 columns, "Name" and "User Data". I coded a CICS program to print "Hello" into syslog whenever a message is being received by the channel.
( 2) I put the load module name under the "Name" column. However, when messages are being received by the receiver channel, the CICS program doesn't seem to be writing the word "Hello" to syslog. The CICS program is correct as I have verified tested it. I am wondering where could I have gone wrong?
( 3) Greatly appreciate for any advice/thoughts.
Thanks.
.Hoe San. |
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| jefflowrey |
| Posted: Wed Mar 19, 2008 10:40 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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Are you sure you can write a CICS program as an MQ Exit?
_________________
I am *not* the model of the modern major general. |
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| RogerLacroix |
| Posted: Wed Mar 19, 2008 7:36 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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Hi,
On z/OS, you can only write MQ Exits in C or Assembler.
Regards,
Roger Lacroix
Capitalware Inc.
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Capitalware: Transforming tomorrow into today.
Connected to MQ!
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| Mr Butcher |
| Posted: Wed Mar 19, 2008 10:20 pm Post subject: |
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Padawan
Joined: 23 May 2005
Posts: 1716
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in addition to Rogers post....
... which must not contain CICS commands. Channel exits are executed in the CHIN address space, not in CICS (i hope you do not use such an old MQ version that still has the CICS move in it).
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Regards, Butcher |
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| bay hoe san |
| Posted: Thu Mar 20, 2008 12:44 am Post subject: |
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Centurion
Joined: 27 Nov 2006
Posts: 117
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Hello,
( 1) Thanks for all your advice. Greatly appreciate.
( 2) Does any expert has a sample C where I can compile? BTW, the exits written in C or Assembler, has it to be a batch or online pgm? After compilation, where should I the load module reside?
( 3) Pls help. Thanks.
.Hoe San. |
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| zpat |
| Posted: Thu Mar 20, 2008 1:09 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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If you are asking these questions, writing system exits may not be for you.
System exits are neither batch nor online programs. They are extensions to system software.
Typically they need to be very efficient, re-rentrant and absolutely bug free.
They usually reside in system libraries. |
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