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To: rudedog who wrote (54810)4/29/1998 10:10:00 PM
From: John Koligman  Read Replies (2) of 186894
 
Thanks Rudedog - All the years I spent looking at MVS I/O code and how customers interface with it makes me pretty confident of my opinion. This stuff has been out there soooo long and is sooo complex that few 'younger' programmers know how it works, and lots of the older guys are retired. Just fixing Y2K legacy code at higher levels (Cobol as an example) for customers must be a nightmare. Most code was not documented well, few really know how it works, yet it is key to many enterprise computing tasks. The other thing I find amusing is what many at the PC level think is 'stable' OS code. I've heard of MVS shops that could run for 8 months without an IPL.....

John

PS - Do you remember the recent stories about the FAA's problems in replacing 308X driven radar systems? IBM has told the FAA that the 308X mainframes should be replaced before Y2K because IBM can no longer guaranty date integrity, one reason is that they no longer have any microcoders that worked on those machines and understand whats going on inside... <ggg> Guess that's why the FAA has hired retired IBM engineers and programmers to work on these systems.
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