Just a quick note about the Oracle Database 11g Interactive Quick Reference That was released today to the public. This Interactive Quick Reference, created by Oracle University and the Server Technology Curriculum group, is your Essential Guide to Oracle Database 11g Release 2. This interactive quick reference includes an architecture diagram, a comprehensive list of background processes and an extensive list of DBA views organized by product feature areas.
Nicely done! Wish the columns in the DBA views had comments though.