Oracle Optimizer: Moving to and working with CBO

If your application was developed in earlier releases of Oracle (v. 7 and earlier), chances are that your database is running in Rule based optimizer. This article will help you understand the Oracle Optimizer and various efficient ways of moving to Cost based Optimizer. This is Part 1 of a five part series.

1. What is Optimizer?
2. Why Optimize?
3. Available Optimizers
4. Why is RBO being removed?
5. Why move to CBO?

6. Initialization parameters that affect CBO
7. Internal Oracle parameters that affect CBO

8. Setup changes for migrating to CBO
9. Generating Statistics
10. DML Monitoring

11. Hints
12. Stored outlines
13. Statistics for SYS schema

14. New Privileges
15. How to analyze execution plans in CBO?
16. Oracle Applications 11i specific information for CBO
17. Conclusion