As a microfische job, it is a collection of printouts, not used for input.

On Sat, Sep 19, 2020 at 8:51 AM Paul Gilmartin
<[email protected]> wrote:
>
> On Fri, 18 Sep 2020 23:10:24 -0500, Brian Westerman wrote:
>
> >I don't see that you can do that with tapes, the hdr1 won't match the new 
> >DSN.
> >
> So the tapes are labeled.  Alas.
>
> I'm curious: how do the users access those data sets in subsequent jobs?
> Examine the logs of the creating jobs for allocation messages and code
> VOL=SER in the later jobs?
>
> Cataloging unique DSNs hardly alleviates the problem -- it might
> aggravate it: 3 times as many keystrokes to modify -- two DSN
> qualifiers versus one volser.
>
> How would you deal with DSN collisions?  With "thousands" of
> generated names this is highly likely:
>     https://en.wikipedia.org/wiki/Birthday_problem
>
> If you do nothing, one job with DISP=(NEW,CATLG) will wait for the
> other to complete; write the data set then get NOT CATALOGUED.
>
> There's a meta-process problem here.  At some point programmers
> should have been instructed not to create thousands of uncatalogued
> data sets with identical names.
>
> If you adopt unique catalogued DSNs, might DASD be a medium
> preferable to tape?
>
> -- gil
>
> ----------------------------------------------------------------------
> For IBM-MAIN subscribe / signoff / archive access instructions,
> send email to [email protected] with the message: INFO IBM-MAIN



-- 
Mike A Schwab, Springfield IL USA
Where do Forest Rangers go to get away from it all?

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to [email protected] with the message: INFO IBM-MAIN

Reply via email to