Coming from the banking and Utilities background, it was required that any changes made in a production environment be tested prior to implementation, and include backout capabilities. While I believe that ABO can very much help old COBOL modules (and even those sites that don't have corresponding source code), it is a change. Your industry may have different compliance requirements. From a performance analyst perspective, I'd have much interest in the before and after effect of implanting ABO. Seems like a good session for SHARE for anyone who can collect the statistics...
zN -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Jesse 1 Robinson Sent: Thursday, October 13, 2016 9:13 AM To: [email protected] Subject: Re: ABO Automatic Binary Optimizer The idea of making any kind of last-minute change just before production makes my skin crawl. Even when we (rarely) install an emergency PTF, we insist on running the code at least on the sandbox and preferably on the development system before hitting production. I would call it irresponsible to move any object-code instance to production without at least some testing, including compiled COBOL. If I were in charge, OPT would be specified from the get-go. Likewise I would expect ABO code to be tested at least cursorily before jumping into prime time. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-302-7535 Office [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Charles Mills Sent: Thursday, October 13, 2016 8:39 AM To: [email protected] Subject: (External):Re: ABO Automatic Binary Optimizer Call me conservative after many years in this business but I say Yes. In my experience optimization sometimes exposes bugs that previously were masked. I have little experience with COBOL, but COBOL is notorious for allowing invalid constructs like array subscript over-cleverness. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Tom Marchant Sent: Thursday, October 13, 2016 7:00 AM To: [email protected] Subject: Re: ABO Automatic Binary Optimizer On Thu, 13 Oct 2016 05:44:51 -0500, Bill Woodger wrote: >Recompiling a program with no changes. Do you "regression test"? No. ... So, if someone compiles their COBOL program without optimization and tests it, then compiles it with optimization before putting it into production, does it need to be tested again? ---------------------------------------------------------------------- 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
