> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Paul Gilmartin > Sent: Thursday, December 13, 2007 9:20 AM > To: [email protected] > Subject: Re: The future of PDSs > > > On Wed, 12 Dec 2007 08:38:32 -0600, Rick Fochtman wrote: > > >-----------------------<snip>---------------------- > > > >>IBM created the PDS a long time ago - giving us some > conveniences that > >>fit within its OS design. Other computer companies either did not > >>see this advantage or had OS structures that handled it other ways. > >> > >>Do we use PDSs now because that's what we have been using > for decades? > >>Or is it possible to still keep advantages of our OS and go in a > >>different direction? > >> > >--------------------<unsnip>---------------------- > >It depends. Are we now allowed to use a PDSE in LINKLIST or LPALIST? > > > >Unless or until that restriction is lifted, the PDS will > continue to exist. > > > Can PARMLIB be a PDSE? > > --gil
No. It is read very early, before the LPA is build. Logically necessary since the datasets to be included in the LPA are specified in the PARMLIB concatenation. Also, the LOADnn member could be in SYS1.PARMLIB. And it must be read very early indeed. If IBM wanted to, I guess that they could have "something" which would be a basic installable z/OS image (core image in the old days) which could be a "temporary" system which could read PDSEs and create the "real" system. But it seems to be rather extreme. It reminds me, somehow, of a VM "NCSS"? (like CMS) or maybe the way that Linux boots. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology The information contained in this e-mail message may be privileged and/or confidential. It is for intended addressee(s) only. If you are not the intended recipient, you are hereby notified that any disclosure, reproduction, distribution or other use of this communication is strictly prohibited and could, in certain circumstances, be a criminal offense. If you have received this e-mail in error, please notify the sender by reply and delete this message without copying or disclosing it. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
