And if you search in www.ibm.com for TIOT I bet you could find some messages you would be interested in.
Lizette > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On > Behalf Of Lizette Koehler > Sent: Saturday, June 18, 2016 11:48 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: TIOT exceeded > > What searches have you done on IBM Main Archives and in www.ibm.com for TIOT > information? > > Have you done any internet searches? > > If so, what have you found out. > > It will depend on what task you are needing this information for. DB2 handles > it different, than say a batch job. > > Have you looked at the INIT and Tuning guide for TIOT specifications. > > Have you looked at this link? > http://www-01.ibm.com/support/docview.wss?uid=isg3T1000065 > > The size of the TIOT > The TIOT size is specified in the ALLOCxx PARMLIB member and has a default of > 32K. This is sufficient for 1635 data sets on a single volume and 129 data > sets with the maximum of 59 volumes defined. Before specifying large values > for DYNVOL, on the assumption that all expansion will then be handled, > consideration should be given to the effect on the TIOT size of jobs with > large numbers of DD cards. If a data set, with one primary and five candidate > volumes, was in a data class with a DYNVOL of less than 7, then 24 bytes of > TIOT space would be required. If the same data set was using a data class with > a DYNVOL of 20, then it would require 80 bytes of TIOT space. Since the size > of the TIOT (or the size of all the TIOT entries for a job) is limited to the > size specified in ALLOCXxx, when large quantities of data sets with large > DYNVOL values are concurrently allocated, it is possible to exhaust the space > in the TIOT. This will result in allocation failures indicated by messages > IEF240I or IEF491I for batch allocations or error reason codes 238 or 450 > (hexidecimal) for dynamic allocations. Note that this is not a consideration > for DB2, because it uses an interface to dynamic allocation, which creates an > XTIOT. > > Lizette > > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] > > On Behalf Of Jake Anderson > > Sent: Saturday, June 18, 2016 11:04 AM > > To: IBM-MAIN@LISTSERV.UA.EDU > > Subject: TIOT exceeded > > > > Hi > > > > 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 ? > > > > Jake > > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
