I've occasionally wondered why LISTCAT has RELEASE-------------2 on every entity listing (1974 is "before my time"). It's amazing how release & version numbers deteriorate in various ways (Browser Identity strings are the worst (maybe - hideous examples abound)).
I guess we can give up waiting for "Release 3". sas On Tue, Dec 5, 2017 at 6:43 AM, Mike Kerford-Byrnes <[email protected]> wrote: > Going back a looong way, I worked on VSAM Release 1 (OS/VS1 Rel 2.6-ish) in > 1974. It was not the happiest of times, with a significant number of errors > and problems, especially when VSAM limits were tested. Eventually peace > returned, and then VSAM Release 2 was announced.(I think late 1975 or early > 1976). It supported Alternate Indexes, Improved CI Processing, GET-Previous > (Read Backwards) and introduced RRDS and spanned records. > > > > Having endured a "busy" time dealing with Release 1, we were not best > pleased at having to demonstrate to our masters that Release 2 would not > visit yet further challenges to our production systems. The effort of > proving that was almost as great as that of the original problems, which > included a genuine Severity 1 (NO production at all) for a period of over 24 > hours. > > > > The LISTC output indicated which release had created the file and hence the > processing that was (or was not) permitted. VSAM Catalogs could describe > files created by either or both versions. Of course once a > REPRO/DELETE/DEFINE/REPRO or EXPORT/IMPORT was carried out on the new > system, it would be a 'Version 2' file and the check on how to process the > file was un-necessary. > > > > I have just realised that was 43 years ago! It must have hurt - I can still > remember. The phone calls to STL - with the 8-hour time difference - and > the dump 'lost' by one of the couriers necessitating an IBM SE personally > transporting its replacement to California in his carry on bag! > > > > MKB > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- sas ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
