The P indicates Asks the system to allocate the same number of devices as requested in the VOLUME volume-count or SER subparameter, whichever is higher. Thus, all volumes for the data set are mounted in parallel.
If you specify the P subparameter for system-managed DASD, the system ignores it. If you specify the P subparameter for system-managed tape libraries, the system honors it So according to the JCL Reference manual, the P will be ignored for DASD. Since you say NON-SMS I am not sure. However, you have only asked for 7 volumes. What size is the volumes it is getting allocated on? 3390-3,3390-27???? Is there sufficient space on the 7 volumes? Did you receive any messages when this ran? If so, please post the complete messages? The subparameter P has been around for a bit. Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of Cosby, Bob - OCFO > Sent: Friday, February 07, 2014 11:46 AM > To: [email protected] > Subject: Large Multi-Volume Physical Sequential allocation question > > Had a problem allocating a NON SMS Large PS file that would not span volumes; is > anyone on this list familiar with the parameter UNIT=(3390,P) which worked? > This parameter pre-allocates the volsers; never saw this before and is this a new > feature with z/OS R1.13? > > //DD01 DD DSN=DSN1,DISP=SHR > // DD DSN=DSN2,DISP=SHR > // DD DSN=DSN3,DISP=SHR > //DD01O DD DSN=DSN.OUTPUT, > // 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) > > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
