On a z900 you will suddenly find yourself running in 64-bit mode (ARCHLVL 2) unless you have previously installed the Bimodal Accommodation feature. The problems you discover in that situation may well dwarf any and all others. The feature is free; a simple FMID APPLied onto your existing z/OS 1.4.
If all your ISV software is current, you may not see problems in ARCHLVL 2. But remember: THERE IS NO BACKOUT. You can't just ask IBM to please put the machine back the way it was because the guts of the 9672 will be strewn about all over the floor. There is no remediation except to slog forward. If you have the Bimodal feature already installed, neither z/OS nor any application will see a difference because the system will truly be running in ARCHLVL 1. . . . JO.Skip Robinson Southern California Edison Company SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [EMAIL PROTECTED] IBM Mainframe Discussion List <[email protected]> wrote on 06/28/2005 08:19:13: > We may be about to upgrade from a 9672-R76 to a z900-104. We are running > z/OS v1.4 with CICS/TS v23, IMS v8, DB2 v7 and various CA, BMC, Compuware, > TMON, and MacKinney products. > > What are the gotchas, watchouts, etc. in this upgrade? 64 bit issues? > > Thanks, > Craig ---------------------------------------------------------------------- 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
