On Fri, 20 Aug 2021 14:10:18 -0500 Paul Gilmartin <[email protected]> wrote:
:>On Fri, 20 Aug 2021 10:11:14 -0700, Tom Ross wrote: > ... :>>LE is both upward and downward compatible as long as the z/OS levels are :>>in service. There are some restrictions, ... :> From Wikipedia, the free encyclopedia :> Forward compatibility or upward compatibility is a design characteristic :> that allows a system to accept input intended for a later version of itself. ... :> :>That seems to be an elusive goal. For example, I wouldn't expect a POSIX :>shell script I wrote intended for the first version of MVS that provided :>OMVS (circa 5.2?) to be accepted by the immediately previous version, :>lacking OMVS, even while both those levels were in service. For some products IBM provides "compatibility" PTFs to provide upward compatibility. It is quite common for JES, where a shared spool system may not upgrade all members at the same time. :>"[S]ome restricrions", indeed! Clearly, I need a better definition. -- Binyamin Dissen <[email protected]> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
