Bob, It's usually simpler to specify UNIT=(3390,7) and forget the VOL parm altogether. An explicit unit count is not ignored for SMS managed datasets.
I used to use ACC/SRS to force all DSORG=PS datasets to be allocated with a unit count of 5 - solved my X37 nightmares big time. Blew TIOT in a few cases, but it was worth it once we tuned those jobs. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Cosby, Bob - OCFO > Sent: Monday, February 10, 2014 1:23 PM > To: [email protected] > Subject: Re: [IBM-MAIN] Large Multi-Volume Physical Sequential allocation > question > > Looked in the MVS JCL User's Guide and found Parallel Mounting For some > jobs, all requested volumes must be mounted before the data set can be > used. For these jobs, request as many units as volumes or request parallel > mounting by coding P in the UNIT parameter. > > Now that I know about,I have used it and it works great. > > //SYSLIST DD SYSOUT=* > //DD01 DD DSN=NFCPBEAR.B5I.EHRI.HSCU.SF50T,DISP=SHR > // DD DSN=NFCPBEAR.B5I.EHRI.HSCG.SF50T,DISP=SHR > // DD DSN=NFCPBEAR.B5I.EHRI.DJIN.SF50T,DISP=SHR > //DD01O DD DSN=NFCPPARA.B5I.EHRI.HS00.SF50.XMLT, > // DISP=(,CATLG,DELETE),UNIT=(3390,P),DSNTYPE=LARGE, > // > DCB=(NFCP.PRODMODL,DSORG=PS,RECFM=FB,LRECL=200,BLKSIZE=0), > // SPACE=(CYL,(4369,4369),RLSE),VOL=(,,,7) > //DD01RL DD DSN=NFCP.PRODSPEC,DISP=SHR > //SYSIN DD DSN=NFCP.PRODSPEC(FAEOPF02),DISP=SHR > > I only needed for large multi-volume files. > > > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] > On Behalf Of Shmuel Metz (Seymour J.) > Sent: Saturday, February 08, 2014 6:48 PM > To: [email protected] > Subject: Re: Large Multi-Volume Physical Sequential allocation question > > In <[email protected]>, on 02/07/2014 > at 06:52 PM, Lizette Koehler <[email protected]> said: > > >So according to the JCL Reference manual, the P will be ignored for > >DASD. > > No. > > -- > Shmuel (Seymour J.) Metz, SysProg and JOAT > ISO position; see <http://patriot.net/~shmuel/resume/brief.html> > We don't care. We don't have to care, we're Congress. > (S877: The Shut up and Eat Your spam act of 2003) > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN > > > > > > This electronic message contains information generated by the USDA solely > for the intended recipients. Any unauthorized interception of this message > or the use or disclosure of the information it contains may violate the law and > subject the violator to civil or criminal penalties. If you believe you have > received this message in error, please notify the sender and delete the email > immediately. > > ---------------------------------------------------------------------- > 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
