How can 'Ontape' functions be used to back up Informix/Lawson DB to disk? Is dbspace required or can a large area in a directory (e.g., /gsc/bigspace) be used?
A big directory is fine. The trick is that when you "change tapes," you have to rename the disk file to another name and recreate the old filename with zero bytes size. Then the system believes that you have actually changed a tape.