10gR1 new feature: "Enhanced Bitmap Index Performance"

In the 10gR1 New Features overview (http://download-east.oracle.com/ docs/cd/B14117_01/server.101/b10750/chapter1.htm) it says: "Enhanced Bitmap Index Performance and Space Management" Bitmap indexes now perform better and are less likely to be fragmented when subjected to large volumes of single-row data manipulation language (DML) operations.

I have not been able to find any docs in Google, Groups or Metalink that explicitly give more details about this specific "announcement".

Any clues?
Thanks, Erik Ykema Received on Thu Mar 15 2007 - 17:20:50 CDT