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kanitha-mvs
Beginner
Joined: 17 May 2006
Posts: 26
Topics: 17
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 Posted: Thu Jul 09, 2009 4:14 am Post subject: How DD name is mapped to File-control in cobol |
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Hi,
In most of the jobs, JCL is having a DD name and the cobol program has some prefix added to the DD present in JCL. How is this mapping done?
Eg: In jcl its like "XXX DD DSN=A1.EX.DSN, "
In FILE-CONTROL of cobol, its like
FILE-CONTROL.
SELECT COB-FILE ASSIGN TO UT-S-XXX.
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dbzTHEdinosauer
Supermod
Joined: 20 Oct 2006
Posts: 1411
Topics: 26
Location: germany
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| Posted: Thu Jul 09, 2009 4:50 am Post subject: |
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perform a search on the programmers guide for your cobol version on the keyword assignment-name.
follow the links and read the explanations given.
This link will list all COBOL Manuals. Find the one for your cobol version and environment.
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Dick Brenholtz
American living in Varel, Germany |
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Anuj Dhawan
Intermediate
Joined: 19 Jul 2007
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Location: Mumbai,India
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| Posted: Thu Sep 17, 2009 1:27 am Post subject: |
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Dick has given a correct direction, However, for my .02$... percept this | Code: | | SELECT COB-FILE ASSIGN TO UT-S-XXX. |
as | Code: | | SELECT logical-file-name ASSIGN TO UT-S-DDname. |
DDname is common between COBOL program and JCL so that's where connectivity comes in.
In UT-S, "UT" is meant for "Utility-Only Access" and "S" for sequential. They are optional prefixes.
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Anuj |
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kolusu
Site Admin
Joined: 26 Nov 2002
Posts: 12368
Topics: 75
Location: San Jose
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| Posted: Thu Sep 17, 2009 3:01 pm Post subject: |
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| Anuj Dhawan wrote: | Dick has given a correct direction, However, for my .02$... percept this | Code: | | SELECT COB-FILE ASSIGN TO UT-S-XXX. |
as | Code: | | SELECT logical-file-name ASSIGN TO UT-S-DDname. |
DDname is common between COBOL program and JCL so that's where connectivity comes in.
In UT-S, "UT" is meant for "Utility-Only Access" and "S" for sequential. They are optional prefixes. |
huh? where did you get that definition? UT stands for Unit Transfer. for more information read here
http://www.mvsforums.com/helpboards/viewtopic.php?p=7137#7137 |
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Anuj Dhawan
Intermediate
Joined: 19 Jul 2007
Posts: 298
Topics: 7
Location: Mumbai,India
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| Posted: Wed Sep 23, 2009 4:04 am Post subject: |
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Hi Kolusu,
I've never heard if "UT" stands for "Unit Transfer", what I know is
First part in DDNAME: - Device Class
UT stands for Utility (Tape or Sequential Disk, and they should be OPENed in input mode as far as COBOL goes)
DA stands for Direct-Access (disk)
Second part in DDNAME: - Method of Organization
S
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Anuj |
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kolusu
Site Admin
Joined: 26 Nov 2002
Posts: 12368
Topics: 75
Location: San Jose
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| Posted: Wed Sep 23, 2009 11:16 am Post subject: |
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Anuj Dhawan,
I couldn't find the documentation which mentions UT as unit of transfer. I remember reading it as unit of transfer.
Anyway if any of the senior members know the exact definition it would be great
Kolusu |
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Anuj Dhawan
Intermediate
Joined: 19 Jul 2007
Posts: 298
Topics: 7
Location: Mumbai,India
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| Posted: Fri Sep 25, 2009 5:43 am Post subject: |
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Sure Kolusu, I look forward to that. Meanwhile if I found something on that I'll post here.
I know it's very trivial to know this in the time of Enterprise COBOL but sometimes curiosity kills you... 
Have a good one,
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Anuj |
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