CHAPTER 18
Using Hints
In my experience, the vast majority of complex applications that involve a substantial amount of Oracle SQL are littered with hints. This is done despite the omnipresent warnings that suggest that hints are an extreme measure only to be used as a last resort. The following official warning is an example:
Hints were introduced in Oracle7, when users had little recourse if the optimizer generated suboptimal plans. Now Oracle provides a number of tools, including the SQL Tuning Advisor, SQL plan management, and SQL Performance Analyzer, to help you address performance problems that are not solved by the optimizer. Oracle ...
Get Expert Oracle SQL now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
