[georgefclay]

I did read the article that was referenced. I did not read the article that that article referenced. My point was about the comment on "over engineering". This problem was not cause by over engineering.

[chrisbolt]

It says right in the article that was referenced:

Before long, JPMorgan Chase DBAs realized that the Oracle database was corrupted in about 4 files, and the corruption was mirrored on the hot backup.