Lizette, The error message was
IEF240I JOBNAME STEPNAME - TASK I/O TABLE EXCEEDS TIOT LIMIT OF 0048K I found that the GDG members were created on Multivolume. On Mon, Jun 20, 2016 at 6:48 PM, Lizette Koehler <stars...@mindspring.com> wrote: > Jake, > > This is a more helpful posting for your question. We can see what your > issue is with your question about TIOTs. > > Next, what error message do you get in your job when it fails? Please > post the entire message and not just the message ID. > > Lizette > > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > > Behalf Of Jake Anderson > > Sent: Monday, June 20, 2016 1:18 AM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: Re: TIOT exceeded > > > > Hi, > > > > The JCL abended even before reaching the Limit of 48k set in our Shop. on > > every GDG deletion DD statement, we had 256 generations and it was same > for > > 4 DD statements. > > > > Is there any reason even if the TIOT size is set at 48k But the Job > abends > > before the DD statement reached 2454 ? > > > > On Mon, Jun 20, 2016 at 12:30 PM, Jake Anderson < > justmainfra...@gmail.com> > > wrote: > > > > > Hi > > > > > > The TIOT started failing when the JCL started deleted a group of GDGs. > > > Using DISP=OLD,DELETE > > > > > > Jake > > > On Jun 20, 2016 2:32 AM, "Greg Dyck" <gregd...@pobox.com> wrote: > > > > > >> On 6/18/2016 11:03 AM, Jake Anderson wrote: > > >> > > >>> Is there a way to know if the DD chain has approached the end or it > > >>> has approached the end of Chain. Is there a way to tweak the JCL to > > >>> overcome TIOT exceeded values ? > > >>> > > >> > > >> The TIOT is a fixed sized array of entries, not a chain. The size is > > >> defined in PARMLIB member ALLOCxx, with a maximum allowed size of > > >> 64K. Only when an allocation request fails due to insufficient TIOT > > >> space do you know it is full. > > >> > > >> The primary 'tweak' for SMS managed datasets that can reduce the > > >> space used for each DD in the TIOT is to reduce the dynamic volume > > >> count (DYNVOL) specification defined for the data class ( > > >> http://www-01.ibm.com/support/docview.wss?uid=isg3T1000065). > > >> > > >> It is possible to dynamically allocated datasets using the extended > > >> TIOT (aka, XTIOT). This requires the application be updated > > >> appropriately ( > > >> http://publibz.boulder.ibm.com/zoslib/pdf/oa34634.pdf). For non-VSAM > > >> datasets you must also change PARMLIB member DEVSUPxx to specify > > >> NON_VSAM_XTIOT=YES. VSAM datasets may be allocated using the XTIOT > without > > any changes to PARMLIB. > > >> > > >> Greg > > >> > > ---------------------------------------------------------------------- > 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
