What Are The Benefits When Upgrading From Oracle 8i To 9i?

One question I'm often asked is "Apart from the inclusion of Oracle OLAP and Oracle Data Mining, what are the benefits of upgrading an Oracle 8i database to Oracle 9i?".

Well, I recently came across an article on this subject by Don Burleson, which is worth taking a look at to get a high level understanding of the benefits of migration.