using same file in multiple DD's

nankrish · New User Joined: 11 Nov 2005 Posts: 26

Hi,

In a program if there are three output files created, is it possible to use the same file for all the three outputs files in the JCL.

All the files are opened in output mode already and it cannot modified to other modes.

When i tried giving (mod,ctlg,delete) for the all the files, i'm getting error as duplicate dataset in the second DD name.

Is there any other way to achieve this?

Thanks,
Ramesh

ofer71 · Posted: Thu Jun 14, 2007 5:36 pm

You can add an IEBGENER or SORT step.

O.

muthuvel · Posted: Thu Jun 14, 2007 5:36 pm

Ramesh,
You are using in the program logically three seperate files ,so in the job you have to specify three seperate files.you cannot use same file.If you want only one file then use a sort merge after this step or change your logic to have only one output file.

But Still,What is your exact requirement?Is it just for knowledge or for requirement?

nankrish · New User Joined: 11 Nov 2005 Posts: 26

hi,

my requirement is to download these files to the server. Since all the files are of same layout the user wants to download them as a single file in the server.

muthuvel · Posted: Thu Jun 14, 2007 6:48 pm

How many files you want to download?

You can use MOD parameter but when using that download(i think it is FTP),download each file in seperate step in the PROC,i.e single output file but seperate input files.

Hope this helps.

dick scherrer · Posted: Thu Jun 14, 2007 11:41 pm

Hello,

I'd suggest you create 3 files and then run SORT or IEBGENER to combine them into one file for the download.

If the program is writing to all 3 concurrently, the output would be interleaved and possibly quite confusing.