Dave Gibney
Information Technology Services
Washington State University

> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On
> Behalf Of Thomas Berg
> Sent: Monday, February 13, 2012 5:11 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: SV: Archaic allocation in JCL (Was: Physical record size query)
> 
> > -----Ursprungligt meddelande-----
> > Från: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] För
> > Lizette Koehler
> > Skickat: den 13 februari 2012 12:43
> > Till: IBM-MAIN@bama.ua.edu
> > Ämne: Re: Archaic allocation in JCL (Was: Physical record size query)
> >
> > >
> > > I can't understand why we STILL need to specify SPACE= (etc) for an
> > allocation of a
> > > dataset.
> > > You normally don't do that in other OS (platforms), You always (both
> > principally and in
> > > practice) want to allocate as much as is needed during execution
> > >
> > > If for backward compatibility it can't be done automatically, why not
> > introduce a new
> > > keyword like e g "SPACE=ANY" ?
> > >
> > >
> >
> > Thomas,
> >
> > IIRC - if you force a DATACLAS on a dataset in SMS, you can specify the
> > Space requirements there.  Then the JCL does not require Space.  Have you
> > looked at that?  However, then that makes your storage admin responsible
> > for
> > ensuring the space is enough.  And if needed alter the dataclass if there
> > are space issues.  And it would require all such datasets be SMS managed.
> >
> >
> > Lizette
> 
> Hi Lizette,
> 
> In practice it's not a viable alternative. Besides the need (if doing it that 
> way)
> to communicate frequently with the "space gang", it's to many variants of
> datasetnames and to many different needs for space depending on time,
> date and subgrouping within applications.
> 


  But, this is precisely what SMS and DATACLAS are for. It does accomplish, for 
the most part, SPACE=ANY.
Not fully using SMS is so 80s'

Dave Gibney
Information Technology Services
Washington State University

> 
> 
> Regards,
> Thomas Berg
> _________________________________________
> Thomas Berg   Specialist   A M   SWEDBANK
> 
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