Weekend Learning: Slow database I/O

If you've always wondered about your database I/O performance, ways to measure and interpret it, or some documentation on the subject you're in luck today!  I found the article "How to Tell if the I/O of the Database is Slow" on My Oracle Support under note 1275596.1 and it starts to help peel back the onion of performance a bit, especially with all the documents linked within the note, so I saved it knowing this was something I wanted to review in depth when I had some time.  I suggest if you're interested in performance on an Oracle system, you do the same this weekend with me.  Maybe we'll compare notes at the end with a quiz.  :}