> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Ed Gould > Sent: Wednesday, October 29, 2014 4:19 PM > To: [email protected] > Subject: Re: DFHSM QUESTION - EXPIRATION OF DSN > > On Oct 29, 2014, at 6:14 PM, Gibney, Dave wrote: > > >> -----Original Message----- > >> From: IBM Mainframe Discussion List [mailto:IBM- > [email protected]] > >> On Behalf Of Ed Gould > >> Sent: Wednesday, October 29, 2014 4:04 PM > >> To: [email protected] > >> Subject: Re: DFHSM QUESTION - EXPIRATION OF DSN > >> > >> On Oct 29, 2014, at 4:39 PM, R.S. wrote: > >> > >>> W dniu 2014-10-29 o 18:47, Gibney, Dave pisze: > >>>> HSM will happily back-up empty datasets. INVALID datasets are > >>>> another matter. But, it is an easy matter to define a DEFAULT > >>>> DATACLAS with DSORG=PS and never have another invalid dataset. > >>>> > >>> True. > >>> However I would prefer to have some feature to avoid creation of > >>> invalid datasets. > >>> I saw a lot of invalid datasets and none of them was really need by > >>> the creator. > >>> > >> > >> R.S. > >> Define invalid datasets, please. > > > > From HSM's perspective, they lack a DSORG. Most frequently created by > > JCL where the program doesn't actually OPEN the output file for some > > reason. > > On non-SMS disk, they can also lack an EOF mark with older z/OS (or > > perhaps OS390) > > > > From the comment it could have been a dataset that didn't have a local > standard name. > I had a standard (DASD) that if it didn't have a valid dsorg it was deleted. I > regularly went through and deleted them.
25 years ago or more, so did I. With SMS, HSM and DSROG via a DEFAULT DATACLAS, I don't have to do this manual deletion of obvious errors. > > Ed > > ---------------------------------------------------------------------- > 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
