I realized that last night, when I was thinking about my question. But I remember a Data in Virtual process back in the 1990s. You defined a dataset or datasets via an exit. The Data in Virtual STC would watch for a reader of the dataset and read the data set into storage and retain it there for multiple readers. Once all readers disconnected from the dataset, it was taken out of storage. At least that is my memory of the process.
"Confidentially doc, I am the wabbit." Bugs Bunny Sent with Proton Mail secure email. On Friday, January 17th, 2025 at 9:09 AM, Ituriel do Neto <000003427ec2837d-dmarc-requ...@listserv.ua.edu> wrote: > Hello, > > BLSR supports only VSAM datasets, so optimizations of PDS/PDSE are discarded. > Some SMS features replace BLSR, but it is still used. > > > Best Regards > > Ituriel do Nascimento Neto > z/OS System Programmer > > > > > > > Em quinta-feira, 16 de janeiro de 2025 às 17:27:31 BRT, rpinion865 > 0000042a019916dd-dmarc-requ...@listserv.ua.edu escreveu: > > > > > > > I am sure I know the answer. But in case something was introduced in the last > few years, is there a facility that would cache > in memory a library (PDS/PDSE), directory and members? This would be a > library NOT covered by the COFVLFxx Classes. > Looking at DASD statistics for our BMC CTx product libraries, I see that the > CTx parmlib dataset gets hundreds of thousands of > batch job hits, with millions of I/O to the library. The DASD controller > cache hit percent is 97. But the best and fastest I/O is no > I/O. > > Did Batch LSR support libraries and does anyone still use BLSR? > > "Confidentially doc, I am the wabbit." > > Bugs Bunny > > Sent with Proton Mail secure email. > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
