There is the 24 bit TIOT. That is limited in size. Depending on how many datasets you have allocated and how many volumes you allow the dataset(s) to expand to you can run out of 24 bit TIOT. All that said I've only seen the 24 bit TIOT space issue a few times. With the 31 bit TIOT the issue basically goes away.
Thanks.. Paul Feller AGT Mainframe Technical Support -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Rob Schramm Sent: Monday, February 18, 2019 12:00 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: SMS QUESTION [EXTERNAL] There used to be an issue with below the line control blocks when having lots of eligible volumes that were not being used. Lots of vsam + lots of eligible volumes on the vsam definition leads to more storage being chewed up. Since i am experiencing a memory fault that seems unlikely to swap in, I will hope that this jogs someone else's memory Rob Schramm On Mon, Feb 18, 2019, 12:00 PM John McKown <john.archie.mck...@gmail.com wrote: > On Mon, Feb 18, 2019 at 10:57 AM esmie moo < > 0000012780d99c7b-dmarc-requ...@listserv.ua.edu> wrote: > > > Yes the dsn was reallocated. I tried out Dynamic Volume Count > > (Vroom had mentioned it) and I was able successfully run the job. > > It allocated > 37 > > vols.I am curious to try out your recommendation to use the ALTER. > > I assume I have to issued the command while the job is executing > > because if the job abends the dsn is deleted. Could you please > > confirm my understanding? > > > > Sorry, I didn't realise that the DSN was deleted at job end. The ALTER > won't help while the job is in execution. I sometimes use it for CICS > datasets, but CEMT SET CLOSE , do the ALTER, then CEMT SET OPEN. The > dataset must be closed and reopened to pick up the catalog entry changes. > > > > > Thanks. > > On Monday, February 18, 2019, 9:24:28 a.m. EST, John McKown < > > john.archie.mck...@gmail.com> wrote: > > > > On Mon, Feb 18, 2019 at 8:07 AM esmie moo < > > 0000012780d99c7b-dmarc-requ...@listserv.ua.edu> wrote: > > > > > Gentle Readers, > > > I encountered a problem with a space abend for a IAM VSAM EXTENDED > > > FORMAT.dsn. In the DATACLAS we have the Volume Count at 30 so I > changed > > it > > > to 40. I restarted the job however it abended at NUMBER OF > > > VOLUMES > 30.My > > > question Is what is the maximum number of volumes that cane be > allocated > > > via the SMS DATACLAS for the Volume Count? > > > > > > > Did you reallocate the DSN? The value for volume count is set from > > the DATACLAS at allocation time. Any changes to the DATACLAS after > > allocation are not used. The simpliest way to increase the volume count is > > to: > > > > ALTER <<<dsn>>> ADDVOL(* * * * * * * * * *) > > > > Put in as many asterisks are you want extra volumes. > > > > > > > > > Thanks in advance. > > > > > > > > -- > > I just burned 2000 calories! > > That's the last time I'll nap with brownies in the oven. > > > > Maranatha! <>< > > John McKown > > > > -------------------------------------------------------------------- > > -- 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 > > > > > -- > I just burned 2000 calories! > That's the last time I'll nap with brownies in the oven. > > Maranatha! <>< > John McKown > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- Please note: This message originated outside your organization. Please use caution when opening links or attachments. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
