In case you haven’t heard, Oracle database version 9i will be desupported as of June of 2007. That’s right, next month!
If this is the first you’ve heard of this, don’t panic. A Don Burleson points out you should be concerned if your shop is required to be on a fully supported Oracle release, but if that’s not a concern for you then you have a little leeway.
If you don’t have a plan to get onto 10g (preferably 10gR2) it’s time to start getting one together.