From the Documentation….
4.1.14 Database Object Dependencies Utility Removed
The app-level utility "Database Object Dependecies" is removed from this release because the dependency report omitted many of the new attributes for functionality in recent releases and gave an incomplete assessment of the objects used in your app.
Oracle may update this functionality in a future release.
So my question is how do I find which pages in my application use a specific object, so that I can do an impact analysis ?