I will have all available (and RSU,IBM or Hiper) maintenance on. And, yes fallback is one of my larger concerns. One of my least favorite memories from the early 90s is standalone restore of catalog and SMS control dataset volumes between failed IPLs without proper fallback PTFs on. I think we were making a large jump to MVS/ESA 2.5, but I won't swear to that. Actual SLED and the 3090 took 40 minutes to IPL after and before each failure. It was quite the learning experience and I've tried to do things "right" ever since.
> -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On > Behalf Of Pommier, Rex > Sent: Friday, August 30, 2019 8:42 AM > To: [email protected] > Subject: Re: z/OS 2.1 to 2.4 [EXTERNAL] > > Tom, > > The idea is to apply 2.1 maintenance that would make 2.1 compatible with > 2.3. Since IBM won't release 2.4 compatibility maintenance for 2.1, if > there's > some that would make 2.1 co-exist with 2.3, that might make it easier for the > OP to make the jump from 2.1 to 2.4. > > Rex > > -----Original Message----- > From: IBM Mainframe Discussion List <[email protected]> On > Behalf Of Tom Marchant > Sent: Friday, August 30, 2019 10:31 AM > To: [email protected] > Subject: Re: z/OS 2.1 to 2.4 [EXTERNAL] > > On Fri, 30 Aug 2019 10:48:03 +0000, Feller, Paul wrote: > > Would it be a good thing to at least try to get any z/OS 2.3 compatibility > maintenance applied? > > What does that mean to someone who is running z/OS 2.1? > You can't apply a z/OS 2.3 PTF to a z/OS 2.1 system. > > -- > Tom Marchant > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > [email protected] with the message: INFO IBM-MAIN > > > The information contained in this message is confidential, protected from > disclosure and may be legally privileged. If the reader of this message is > not > the intended recipient or an employee or agent responsible for delivering > this message to the intended recipient, you are hereby notified that any > disclosure, distribution, copying, or any action taken or action omitted in > reliance on it, is strictly prohibited and may be unlawful. If you have > received > this communication in error, please notify us immediately by replying to this > message and destroy the material in its entirety, whether in electronic or > hard copy format. Thank you. > > > ---------------------------------------------------------------------- > 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
