Lizette The first URL satisfies me.
Thank you so much. On Jun 21, 2016 7:29 PM, "Lizette Koehler" <[email protected]> wrote: > Jake, > > Have you reviewed the sizes for TIOT in the Init and Tuning Manual? > > TIOT > Specifies the installation defaults for the task I/O table (TIOT). > SIZE(nn) > Specifies the size of the TIOT. The TIOT contains an entry for each DD > statement. The size of the TIOT controls how many DDs are allowed per > jobstep. By specifying an integer from 16 to 64 as the value of this > parameter, the installation controls the default DD allowance. Table 1 > shows the relationship between the size of the TIOT and the maximum number > of DDs allowed. > Table 1. Relationship size of TIOT and maximum number of DDs allowed > Dec Hex Size of TIOT Maximum number of Maximum > number of DDs allowed when every > single unit DD Allowed 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 > > > It looks better in this link > > > https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieae200/alstate.htm > > There are some examples to show you how things are calculated. But > remember, YMMV. > > Also, if you do any internet searches, you will probably come across this > link > > https://groups.google.com/forum/#!topic/bit.listserv.ibm-main/5iizAoUCURc > > > Lizette > > > > -----Original Message----- > > From: Lizette Koehler [mailto:[email protected]] > > Sent: Tuesday, June 21, 2016 6:26 AM > > To: 'IBM Mainframe Discussion List' <[email protected]> > > Subject: RE: TIOT exceeded > > > > If you did not set the TIOT in ALLOCxx to the max (64K) then you will > probably > > run out of TIOT sooner than someone who does. > > > > > > > > If you have SDSF, check the Health Checker function - Look for TIOT in > the > > list. See what it says. > > > > You can enter SB next to the HC functions for more details. > > > > It might help. > > > > I would just expect the system to calculate things for TIOT correctly. > If you > > feel this is in error, you should open an SR with IBM and have them > assist > > you. They will probably need dumps or traces to determine why it fails. > > > > Lizette > > > > > > > -----Original Message----- > > > From: IBM Mainframe Discussion List [mailto:[email protected]] > > > On Behalf Of Jake Anderson > > > Sent: Monday, June 20, 2016 10:43 PM > > > To: [email protected] > > > Subject: Re: TIOT exceeded > > > > > > Hi Lizette > > > > > > Apology to ask > > > > > > I am not still able to understand the calculation of TIOT usage in my > case. > > > > > > It was just 1027 GDG members spanning across multiple volume. > > > > > > So how did it exhaust the TIOT ? Is there a formula that would help me > > > to determine? > > > > > > Jake > > > On Jun 21, 2016 3:23 AM, "Lizette Koehler" <[email protected]> > wrote: > > > > > > > Why not run with TIOT set to 64K? I know a lot of shops that have > > > > set that to the maximum of 64K > > > > > > > > Lizette > > > > > > > > > > ---------------------------------------------------------------------- > 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
