"The SYS1.PARMLIB data set itself can be blocked and can have multiple extents, but it must reside on a single volume. The parmlib concatenation used at IPL must be a PDS. However, after IPL you may issue a SETLOAD command to switch to a different parmlib concatenation which contains PDSEs."
https://www.ibm.com/docs/en/zos/2.5.0?topic=time-description-use-parmlib-concatenation Joe On Fri, Sep 23, 2022 at 11:04 PM Brian Westerman < [email protected]> wrote: > Hi, > > I was asked a question today that I have no idea what to answer to it. I > was asked if it is possible or advisable to change the system parmlibs from > PDS to PDSE and if there was nay benefit to doing it. > > My first reaction was that it would be a bad idea, and that PDSe's might > not be supported at actual IPL, but I'm not aware of any real > restrictions. I know that they are supported later int he IPL process, but > I have zero idea if you can make the system parmlib a PDSE. > > Does anyone know if it's allowed or where I would find information on if > it's disallowed and why? > > It's not vitally important, but it has been bugging me since I was asked > earlier today. > > Brian > > ---------------------------------------------------------------------- > 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
