If a user is commonly creating empty files, have them use a tiny primary with a 
large secondary extent.  

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Gadi Ben-Avi
Sent: Tuesday, May 1, 2018 8:24 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: DFSMSdss Release command

Thanks
Sometimes you need a microscope to find information.
I wish I had CA-Disk on this system.

Any suggestions on how to free this space?

Gadi

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf 
Of Vernooij, Kees (ITOPT1) - KLM
Sent: Tuesday, May 1, 2018 2:43 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: DFSMSdss Release command

https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.adru000/dgt3u2131.htm

again, if you know what you are looking for, you can find it, often with help 
of Google.
Well hidden in the text is:
"DFSMSdss does not release any space for data sets that are empty (the last 
used block pointer in the data set’s VTOC entry is zero)."
AFAIK, there is no way around this restriction. We use CA-DISK for that.

Kees.


> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] 
> On Behalf Of Gadi Ben-Avi
> Sent: 01 May, 2018 13:36
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: DFSMSdss Release command
>
> Thanks
> I did that, but for some reason it's not working.
> This is the command I am using:
> GE 0001     5695-DF175  DFSMSDSS V2R02.0 DA
> RELEASE -
>   INCLUDE( -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180409 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180412 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180415 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180416 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180422 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180423 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180425 -
>     KVPO.LGDM02.KLITMINL.SHILTA.D1180426 -
>   )
>
> If I look at the file using DSLIST I see:
> ----------------------------------------------------------------------
> - Enter "/" to select action                        Tracks %Used   XT
> ----------------------------------------------------------------------
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180409                    1  100     1
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180412                    1  100     1
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180415                    1    0     1
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180416                    1    0     1
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180422                    1    0     1
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180423                 3542    0     2
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180425                 3542    0     2
>  KVPO.LGDM02.KLITMINL.SHILTA.D1180426                 3542    0     2
>
> So I would expect the last 63 files to be processed, but I get a 
> message saying that no files were processed.
> Each of the files is allocated on one volume, so there are no 
> multivolume issues.
>
> Gadi
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] 
> On Behalf Of Vernooij, Kees (ITOPT1) - KLM
> Sent: Tuesday, May 1, 2018 2:18 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: DFSMSdss Release command
>
> The manual is a mess to find what you are looking for.
> This the example chapter of RELEASE in the DFdss manual.
> https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v
> 2r
> 1.adru000/dgt3u2147.htm
>
> to specify a list of datasets, use the FILTERDD parameter
> //SYSIN    DD  *
>   RELEASE DS(FILTERDD(FILTD1))
>  //FILTD1   DD    *
>   INCLUDE(DSN1                                                        -
>           DSN2                                                        -
>           DSN3                                                        -
>           DSN4                                                        -
>           DSN5                                                        -
>           DSN6                                                        -
>           DSN7                                                        -
>           DSN8                                                        -
>           DSN9                                                        -
>         )
> https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v
> 2r
> 1.adru000/cnsfil.htm
>
> Kees.
>
> > -----Original Message-----
> > From: IBM Mainframe Discussion List
> > [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Gadi Ben-Avi
> > Sent: 01 May, 2018 12:22
> > To: IBM-MAIN@LISTSERV.UA.EDU
> > Subject: DFSMSdss Release command
> >
> > Hi,
> > I am trying to create a job that will use the DFSMSdss RELEASE 
> > command to release unused space from a list of datasets.
> > Can anyone help me?
> >
> > Thanks
> >
> > Gadi
> >
> > ????? ?? ????? ???? ???? ???? ?????? ??? ??? ?????? ???? ????? ???
> > ?????? ??????. ?? ????, ???????? ?? ??? ???? ?????, ??????? ???? ????
> > ????? ?? ??? ????? ?????? ?? ?????. ????? ????? ???? ?? ?????? ??????
> > ?????? ???? ?? ???? ??????? ??? ???, ?/?? ?????, ????? ?? ????? ?????
> > ????? ????? ?????? ?? ????? ??????? ?/?? ?????? ?? ??????.
> >
> > --------------------------------------------------------------------
> > -- For IBM-MAIN subscribe / signoff / archive access instructions, 
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