This elementary question has been promoted to at least middle if not high school. I for one am still itching to learn why it's deemed worthwhile. In any case, I suggest putting a script in place to simplify (re)specification. The sample below can be adapted to the user's environment.
It's assumed that the SMPE release HLQ is OSRnn, where nn is the release id like 13 or 21. DSN and VOL can be specified, or the Rexx can be typed on a 3.4 display that shows the data set on the volume. The maintenance user catalog is likewise 'MVSRnn.ICF.MASTER'. /* REXX */ ARG dsn vol IF vol = "" THEN DO /* assume ISPF 3.4 */ ADDRESS ISPEXEC "VGET (ZDLVOL)" /* avail on ISPF 3.4 screen */ vol = ZDLVOL END dsn = STRIP(dsn,B,"'") TRACE C "DEL '"dsn"' NSCR" , "CAT('MVSRnn.ICF.MASTER')" "DEF NVSAM (NAME('"dsn"') DEVT(3390) VOL("vol"))" , "CAT('MVSRnn.ICF.MASTER')" "DEF ALIAS (NAME('OSRnn."dsn"') REL('"dsn"'))" , "CAT('MVSRnn.ICF.MASTER')" . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-302-7535 Office robin...@sce.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of John Eells Sent: Tuesday, August 30, 2016 10:49 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: Elementary dataset alias question Tom Marchant wrote: <snip> > A word of caution. If the real data set is subject to moving to a > different volume, for example because of HSM migrate/recall, the > second catalog entry will not be updated when it is recalled. And of > course, if the data set is on the IPL volume, you would catalog it to ****** > or the appropriate symbol. <snip> Tom raises two important points. To widen the aperture on his first one a bit further, it is of course not only DFSMShsm that can move things around. For example, whoever maintains the data sets that are aliased this way must always remain conscious of the additional catalog entries that are perhaps maintained in different catalogs than the primary entries, and change them in concert in the correct catalog(s) when and if data sets move between volumes. -- John Eells IBM Poughkeepsie ee...@us.ibm.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN