How can I recover from an unrepairable rpm database by building a new database in Red Hat Enterprise Linux 2.1, 3, and 4?

Release Found: Red Hat Enterprise Linux 2.1, 3, 4

Limitation:

If the rpm database is corrupted beyond repair it may be simpler, depending on setup, to reinstall. Copying the rpm database from another machine is possible, although generally not advised. Since machines are rarely 100% identical, copying the database from another machine will result in differences...