× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.


  1.  Home
  2. MIDRANGE-L
  3. December 2002

RE: Named PTF's - was CPF324A

> From: Steve Landess
>
> This may be stuff of urban legend, but I heard about it in the mid-90's, I
> believe...
>
> Apparently some AS/400 customers were having intermittent problems with
> their systems crashing.  After investigation, it was found that if the
> system was located above a certain elevation, gamma rays would zap memory
> bits between refresh cycles, causing the system to go down.
>
> The  fix was a PTF that caused memory refresh to occur more frequently

I recall that PTF.  Used to have the cover letter, but lost it over the
years.  The cover letter listed cosmic rays as the cause of the problem.  It
was a hyper PTF that was released in 1989 or 1990.

Stan

As an Amazon Associate we earn from qualifying purchases.

This thread ...
Follow-Ups:
Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.