Re: RRN question

["Buck Calabro" <buck.calabro@xxxxxxxxxxxx>]

> We read the file and stop on a specific record.  The
> RRN is returned to the calling program. At another time,
> the program is called with the keys and the RRN again.
> We need to start at the record where we stopped before
> and continue reading.

If the file is dynamically updated whilst you are 'stopped' then the
saved RRN might point to a deleted record, or worse, past a record you
haven't read yet.  That is one thing to consider.  If we posit that
the database will remain static between calls, then why not open the
file SHARE(*YES)? Then you won't need to pass an RRN back and forth;
program B can pick up right where program A left off and vice versa.
This won't completely overcome the 'file was updated between program
calls' scenario; only a complete re-read can do that.
  --buck