(This one tough horse.) An interested colleague has also tried DITTO and IDCAMS PRINT on a zero-space data set. Nada. I did a VMAP command that shows, in sequence, every space segment of a volume including free extents. Nowhere does a zero-space data set show as 'holding on' to any spot.
Another test would be to fill up a volume completely with 'real' data sets so that not one single track shows as free. Then try to allocate a zero-space data set. It either works or it doesn't . An exercise left to the overly curious reader. ;-) . . JO.Skip Robinson SCE Infrastructure Technology Services Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [email protected] From: Lizette Koehler <[email protected]> To: [email protected] Date: 08/27/2012 04:27 PM Subject: Re: Space Allocation In Bytes Sent by: IBM Mainframe Discussion List <[email protected]> Gil, What kind of space are you looking for? LISTC name ALL will provide space info on VSAM but not NON VSAM If you want space on NON VSAM then I think the PDS utility on the CBTTAPE.ORG would work. Or create a REXX and use the LM functions to list the space or LISTDSI. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf > Of Paul Gilmartin > Sent: Monday, August 27, 2012 4:05 PM > To: [email protected] > Subject: Re: Space Allocation In Bytes > > On Mon, 27 Aug 2012 13:36:58 -0700, Skip Robinson wrote: > > >I'm curious about the experiment that shows something on disk. ZAP > >command says 'DATA SET UNAVAILABLE OR NON-EXISTENT'. IEHLIST says > >'----THE ABOVE DATASET HAS NO EXTENTS'. What view of the disk shows > >something on a data track? > > > I'm trying for an example. But what command can I use to list SPACE? > Neither LISTDS nor LISTCAT seems to do it for me. (But do I just not know the > correct options? Something under IDCAMS?) > > Thanks, > gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
