re: Oracle's Ellison Tries To Outmaneuver SAP Hana
From what I know based on various interviews over recent years, migrating from Oracle database to Hana isn't that complicated for SAP customers (training and tooling issues aside) if you stick with how things ran before. But if you want to take advantage of "radical simplification," as SAP calls it, you have to change the database model, getting rid of all sorts of indexes, aggregates and joints, etc. As a result, you have to change how the application and various related reports operate. In other words, the more radical the simplification, the more disruptive the change will be. It's a one-time pain, to be sure, but I'm thinking Oracle's promise of continuity will win over many, many Oracle customers who also run SAP apps. It may be less clean/simple than everything in RAM, but that price tag might be painful.