Re: Cobol set for AIX - secuential files - DDMEA

From: michael potter (pottmi_at_gmail.com)
Date: 10/28/04 

Date: 27 Oct 2004 21:30:47 -0700

Daniel Vidal <vidal_dan@gva.es> wrote in message news:<4178D14F.A72AC01@gva.es>...
> Hi all
>
> I have a problem with Cobol and secuential files when migrating from
> MVS to AIX.
>
> I have many batch processes that do 3 steps:
>
> 1 - extract data from database and write secuential file
> 2 - sort the secuential file (external tool like syncsort)
> 3 - generate report
>
> Secuential files in Cobol set for Aix have two real files one like
> filename.txt and other hidden file named .filename.ddmea .
>
> If the sort not have 'INCLUDE' or 'OMIT' options i can copy the
> original .ddmea file with the name of sorted file and all work fine
> but.... I have some sort processes with 'INCLUDE' option set...
>
> Someone know any utilitie for generate .ddmea file from secuential
> file?
> Someone know the .ddmea file specification?
>
> NOTES: I can't use 'line secuential' files... i have packed data.
> The migrated application is very very old and big!!!
>
> T.I.A.
>
> Salud y Suerte!!!!!!!!!!

Dan,

I had a similar problem. I suggest that you convert to the
other indexed file system supported by aix cobol 2.0. the
name slips my mind, but you should be able to find it in
the programmers reference:
http://www-306.ibm.com/software/awdtools/cobol/aix/library/

this alternate indexed file system does not use the annoying
.ddmea files. THere are two ways to tell aix cobol to
use the alternate file system: set an environment variable,
or prefix the name of the file in the program.

I dont think this information specifically addresses your
problem, but at least you will not have to deal with .ddmea. 

-- 
potter

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