Mainframe, MVS and zOS Discussion

How do we find bad data in a file?

define what you consider bad data

without that any answer will rank from useless to wrong

note ...
x'05' is a perfectly good char for binary and packed numerics




 

It depends upon what you mean by "bad data" -- since what you consider bad may be perfectly valid.  For example, consider the hex characters X'0097995D'.  If they are treated as packed decimal, the value is -97995.  If they are treated as binary, the value is 9,935,197.  If they are treated as EBCDIC characters, they are "<nul>pr)" 

So which interpretation is "correct" and which are "bad data"?  That totally depends upon how you look at the value.  All three interpretations are of the same data and may represent something good.

Akshya Chopra" wrote: ↑Wed Feb 14, 2024 12:49 pm Use command f all x'05' you can find bad data.

again ...

DEFINE WHAT YOU CONSIDER BAD DATA