Idcams skip & Count...

On Thu, Mar 12, 2009 at 7:58 PM, John McKown <[email protected]> wrote:

> On Thu, 12 Mar 2009 10:36:21 -0600, Howard Brazee <[email protected]
> >
> wrote:
>
> >I need to create a routine that can be used with a bunch of different
> >extracts to split files into new files of 100,000 records each.   They
> >need to be FTPd to the same location with different names, but I don't
> >want to create empty files on the mainframe nor on the destination
> >machine.
> >
> >
> >
> >What do you recommend?
>
> I would probably use REXX. Something akin to (UNTESTED!)
>
> /* rexx */
> do fileno=1 by 1 /* basically forever */
> "EXECIO 100000 DISKR SYSUT1 (STEM RECORD."
> if rc <> 0 then leave
> "ALLOC DDN(SYSUT2) DSN(...) NEW CATALOG ",
> " SPACE(50 20) CYLINDERS ..."
> "EXECIO * DISKW SYSUT2(STEM RECORD. FINIS"
> "FREE DDN(SYSUT2)"
> end
> if RECORD.0 <> 0 then do
> "ALLOC DDN(SYSUT2) ..."
> "EXECIO * DISKW SYSUT2(STEM RECORD. FINIS"
> "FREE DDN(SYSUT2)"
> end
>
> In the above, I'd make the DSN for the output equal to something that ends
> with:
>
> FILE&fileno
>
> You could then MPUT the "stem" part of the DSN.
>
> You'd need to make the ALLOCATE commands have the correct dataset
> attributes
> like LRECL and RECFM et al.
>
> If you want to "go crazy", then you could use the UNIX "split" command
> along
> with DTLSPAWN (or BPXBATCH) to read the file and create output UNIX files
> which you could then ftp via an MPUT. If you have the Co:Z utilities
> (strongly recommended!), then you could:
>
> //SPLIT EXEC DTLSPAWN
> //INFILE DD DISP=SHR,DSN=input.file
> //STDIN DD *
> cd /temp/filesystem
> rm prefix.to.output.xx*
> fromdsn '//DD:INFILE' | \
> split -l 100000 - prefix.to.output.xx
> /*
>
> An alternate to the above would be to run BPXBATCH with the commands:
>
> cd /temp/filesystem
> rm prefix.to.output.xx*
> cp "//'input.mvs.dsn'" /dev/fd/1 | \
> split -1 100000 - prefix.to.output.xx
>
> replace 'input.mvs.dsn' with the read MVS dataset name in quotes. You'd
> then
> ftp using the UNIX files and MPUT them to the remote system.
>
> But, I'd really use the REXX myself. Mainly because "normal" z/OS people
> will more likely understand it.
>
> --
> John
>
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