Thanks to all who attended my presentation (Reduce Your Disk Footprint by Sharing Read-Only Tablespaces)
We had a great discussion!
The Power Point slides are here – I did some animation, so this is the best way to look at the presentation. Here is the PDF version of the slides. The white paper is here - it is much more detailed than the presentation.
If you think that the non-supported universal method can save you disk space, feel free to call Oracle and ask them to take a look at it.