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batu544 · Beginner Joined: 02 Aug 2005 Posts: 75 Topics: 27

Hi,
As far as i know we can't use DISPLAY in CICS-COBOL program.
but when i coded a display command in a CICS-COBOL program, it gave me return code 0. so...

Can anyone tell where can i see the display value ??

and how can can i know my CICS region name ?
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Regards,
batu

blitz · Beginner Joined: 24 Dec 2002 Posts: 28 Topics: 4

I got this from a search but the link is not working.

http://www.mvsforums.com/helpboards/viewtopic.php?t=2650&highlight=display

kolusu · Posted: Thu Jan 19, 2006 5:22 am Post subject:

blitz,

The link is working fine. Make sure that you do not have POPUP Blocked as the link will open in a new window.

Kolusu
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Kolusu
www.linkedin.com/in/kolusu

Manas Biswal · Posted: Thu Jan 19, 2006 10:26 am Post subject:

batu544,

About your original question on using DISPLAY statement in CICS, although not recommended, you can use it (with higher versions of COBOL or LE libraries link-edited). Though never done it myself, I have come across DISPLAY statements in CICS-COBOL programs, wherein the output was directed to the CICS IPL job sysout. Check your CICS IPL job to see if the output goes there.

HTH...Regards,
Manas
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There is no path to peace. Peace is the path.
- Mahatma Gandhi (1869-1948)

batu544 · Beginner Joined: 02 Aug 2005 Posts: 75 Topics: 27

kolusu,

blitz is not talking about this link . He is talking about the link which is provided in that message. Smile

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DFHJAP3B/1.3.1.2?SHELF=&DT=20030108142051&CASE=

That book is not in Library Server catalog.

Manas Biswal,

Can you tell me how can I check CICS IPL job sysout ?
and how can can i know my CICS region name ?

thanks
_________________
Regards,
batu

kolusu · Posted: Fri Jan 20, 2006 5:26 am Post subject:

batu544,

fixed the manual link the topic. Here is the correct link

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DFHP3A04/1.4.1.1?SHELF=&DT=20050112153951&CASE=

Hope this helps...

Cheers

Kolusu
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Kolusu
www.linkedin.com/in/kolusu

German Castillo · Posted: Fri Jan 20, 2006 7:48 am Post subject:

Hello batu544,

The very basic principle for an online shared platform, and CICS certainly is the best example is NOT to do any I/O directly, or perhaps anything which involves the usage of any SVC. The reason is simple... any INTERRUPTION, just places the whole address space in wait. Think about it for a moment, why do the other users have to wait untill your I/O completes?

Of course CICS provides an alternate mechanism to achieve the same purpose, not using any SVC, or at the very best using them in a controlled way. Most of them are implemented in internal control programs, which in turn are accesed through a common front end, if you are using command level of course. When you use, in your program EXEC CICS WHATEVER.... END-EXEC the code inserted by the translator modifies this line in something like CALL DFHXXX USING ..... The DFHXXXX varies depending upon the programming language that you are using, but basically it transfers control to the standard front end program, giving as parms among other things the execution interface block (EIB), does its functions and gives back the control.

Bottom line... using 'DISPLAY' or any other instruction which generates an I/O should be avoided at all cost. It doesn't mean at all, that they are 'restricted', 'vanished' or 'prohibited', they are still there and the program, at execution time is going to 'TRY' to execut them, perhaps working some of them, but again using the standard CICS interfaces is a lot better, from a performace and proper usage of the CICS platform point of view.
_________________
Best wishes,

German Castillo

Manas Biswal · Posted: Fri Jan 20, 2006 9:32 am Post subject:

batu544,

batu544 · Beginner Joined: 02 Aug 2005 Posts: 75 Topics: 27

Thanks to all of you for your quick and valuable response .. Smile

thanks
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Regards,
batu