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rob@xxxxxxxxx wrote:
I think one old hack was to save the file into a save file. Then you
could hack into the save file object and change the deleted record code.
But really, this is more of a midrange-l question.
Rob Berendt
Modifying save file data *and* successfully restoring it's contents is a
non-trivial task. IBM uses check sums to specifically thwart this hacking.
The easier way to recover deleted records is to only read the save file
and then write the deleted records data back into the database file.
Not technically undeleting anything, but probably close enough to what
most people are look for.
I believe Dave McKenzie's last version of UNDEL used this save file
method. His earlier version actually modified the record deleted status
bit directly in the file, but the modified MI program used to do this
only worked on older releases. IBM has since shutdown patched programs.
Keith
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