Good Oralce database blog..

Came across few postings on Oracle database at this blog. This time around author is covering on "Why Oracle Works the Way it Does". The author gives very good analogy on how Oracle internal works. Both this and this talks about Oracle table spaces/data files and Segments/extents respectively. The author helps one build quick understanding of oracle components. I was looking around for somethign similar for quite sometime. No doubt there are lot of people writting lot about how to use Oracle database effectively. This seiries in one more in the lot but a great read for wanna be DBA and Oracle database developer.