Lizette Don’t understand as the TIOT has one DDNAME unless of course I am doing the Allocation VIA SVC 99 dynamic allocation then I specify ddnames to be concatenated I think
Joe Reichman Joe Reichman IT Specialist Master Files Division New Carrollton Federal Building, B7-182 OS:IT:AD:CP:I:IB Flex M,T,Th,F Home office (240) 863 - 3965 Office (240) 613-4350 Cell (917) 748-9693 TOD M - F 7:30 am - 4:00 pm -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@listserv.ua.edu] On Behalf Of Lizette Koehler Sent: Monday, August 22, 2016 11:59 AM To: IBM-MAIN@listserv.ua.edu Subject: Re: Limit on the number of concatenated datasets So from the ALLOCxx definition in MVS Init and Tuning z/OS V2.10. Table 1. Relationship size of TIOT and maximum number of DDs allowed Dec Hex Size of TIOT Maximum number Maximum number of DDs allowed of single unit DD Allowed when every DD requests the maximum number of units (59) 16 10 16384 (16K) 816 64 17 11 17408 (17K) 867 68 24 18 24576 (24K) 1225 97 25 19 25600 (25K) 1277 101 32 20 32768 (32K) 1635 129 40 28 40960 (40K) 2045 162 48 30 49152 (48K) 2454 194 56 38 57344 (56K) 2864 227 64 40 65536 (64K) 3273 259 From this definition I would think the concatenated would count as 1 but be careful of the TIOT size if each one has more than one volume for it. Just a guess Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > On Behalf Of Mitch Mccluhan > Sent: Monday, August 22, 2016 8:42 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: Limit on the number of concatenated datasets > > Joe, > > There is one, yes. I believe it is 256. Advice from everyone else? > > Regards, > > > > Mitch McCluhan > mitc...@aol.com > > > > > > -----Original Message----- > From: Reichman Joseph <joseph.reich...@irs.gov> > To: IBM-MAIN <IBM-MAIN@LISTSERV.UA.EDU> > Sent: Mon, Aug 22, 2016 10:38 am > Subject: Limit on the number of concatenated datasets > > Hi > > I looked in the JCL reference and DFSMS bookshelf and did not see a > limit on the number of concatenated datasets > > > Would anybody know if there is one ? > > > Thanks > > Joe Reichman > Joe Reichman ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
