On Tue, 22 May 2018 16:51:01 -0400, Tom Conley wrote: >On 5/22/2018 4:26 PM, Ed Jaffe wrote: >> >> ISTR a maintenance philosophy from "eons" ago where PTFs would be >> applied but never accepted. >> >> What was the rationale for this? Does anyone still use this philosophy? >> If so, why? > >There is no rationale. It was wrong then, and it's wrong now. It >kneecaps the most valuable feature of SMP/E - RESTORE! Unless, of >course, you like RESTOREing the entire FMID. > OTOH, doing ACCEPT kneecaps the possibility of a RESTORE to a point earlier than that ACCEPT. SMP/E strikes me as a half-hearted design. A better design would permit RESTORE to any prior service level provided the necessary elements remain in the GLOBAL zone.
Suppose you have two suspect PTFs, A and B. In order to tentatively RESTORE B you must ACCEPT A. If RESTORE B doesn't solve the problem there's no posibility to RESTORE A. I believe VMSES/E does better. It has no analogue of ACCEPT. VMFREMOV simply re-installs needed components from the DELTA disk, the analog of the GLOBAL zone. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
