Quote Originally Posted by gandolf989 View Post
Amazing, it takes 166 pages to say that based on Oracle using a self balancing B-Tree index, indexes should not need to be rebuilt.
And yet the pages you posted made no mention of rebuilding an index

Since the OP's question was in regards to rebuilding indexes and not the low-level mathematic algorithms or science behind indexes, careful reading of the doc does mention that rebuilds are beneficial under certain circumstances.

Nevertheless, even if the doc was 10066 pages, sometimes it is still impossible to dispel the myths that are inevitably perpetuated as evidenced by Gitesh's comment above.