If you are looking for a supported tool, I would use IEBCOPY to clone.

Regards,
John K

David Jousma of the IBM Mainframe Discussion List
<[email protected]> wrote on 08/13/2012 07:34:56 AM:

> This is interesting.  I will look at this closer, however given the
> scope of our current "problem", I'd prefer to use supported
> functions/utilities to do this.
>
> Check out CDSCB on the CBT tape.
>
> SYNTAX  -
>     CDSCB  'DSNAME'   EXPDT(DATE)  SHR  VOL(VOLUME) UNIT(UNIT)
>                       CREATE(DATE) REFDT(DATE)
>                       DSORG(XX) RECFM(XX) LRECL(XX) BLKSIZE(XX)
>                       ALLOC(TR/CYL/BL)  SPACE(SECONDARY-AMOUNT)
>                       PWR/PWW/NOP/RACF/NORACF
>                       ZAP(OFFSET VERDATA REPDATA)
>
> Regards,
> John K
>
> David Jousma of the IBM Mainframe Discussion List <IBM-
> [email protected]> wrote on 08/13/2012 07:03:15 AM:
>
> > This may be a dumb question...just can't see a solution in front of my
> > nose at the moment.
> >
> > Say you have many PDS(not PDSE) datasets that for whatever reason
> > were never allocated with secondary extents(not LLA datasets).    Is
> > there a tool that can change the dataset secondary allocation from 0
> > to some other number easily?   Don't want to have to reallocate the
> datasets.
> >
> > I don't see that the PDS can do it, nor does it look like IDCAMS can
> > do
> it...

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