Tom,

For us there will be no Step1 or Step2.   We will Convert existing loadlibs 
from PDS to PDSE.   There is way too much application JCL to change to think 
about changing the concatenation.

_________________________________________________________________
Dave Jousma
Assistant Vice President, Mainframe Engineering
[email protected]
1830 East Paris, Grand Rapids, MIĀ  49546 MD RSCB2H
p 616.653.8429
f 616.653.2717


-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Tom Ross
Sent: Monday, September 23, 2013 3:17 PM
To: [email protected]
Subject: Re: PDS/E, Shared Dasd, and COBOL V5

>If you set up new PDS/E program libraries for only V5 program code, 
>then any time maintenance on a COBOL program is done the maintainer 
>must be aware whether this is the first time this program has compiled 
>with V5 and if so, be sure any related production JCL gets changed to 
>reference the new library in sync with the program installation and be 
>sure the obsolete load module in some PDS gets purged at the same time 
>to prevent possible execution of obsolete code.

How about if shops start changing COBOL build processes today to use PDSE 
datasets for COBOL V4 (or COBOL 3) programs?
Step 1 would be to allocate new PDSE datasets for each zone of load libraries 
Step 2 would be to add the new PDSE dataset(s) to load library concatenations  
where needed. If put first it would guarantee access to new programs.
Step 3 would be to change build processes to link old COBOL programs into PDSEs.
Step 4 would be to make sure this works for all systems and that old 
(unreachable)  programs get deleted from PDS datasets Step 5 from time to time, 
move needed load modules from PDSs to PDSEs until all are  moved.
Step 6 when all code has been moved, the only programs in PDS should be  
unused, and the PDS datasets could be deleted

  If this plan was used, the COBOL V5 PDSE requirement would not be disruptive.
My question, is it do-able?

Cheers,
TomR              >> COBOL is the Language of the Future! <<

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