And the list are:
10. Unknown Scalability Requirements
9. Improperly Normalized Tables
8. Indexing Issues
7. No Baselines or Benchmarks
6. Disks –Thinking Space but not IO
5. Error Notification
4. Backups
3. Query Tuning
2. Ignorance of Internals
1. Cursors
Some time back, Kevin Klein of Quest was our guest and he did a presentation on this. You can download that presentation here.