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Improve data access in SAP environments with the Oracle Cost Based Optimizer (CBO)

by Martin Frauendorfer, Platinum Support Consultant, Active Global Support, SAP AG

The Oracle Cost Based Optimizer (CBO) can be a powerful tool for determining the most efficient way to retrieve data from an Oracle database. The CBO identifies ways to improve data-access time by considering resource costs such as I/O, by accounting for statistical values and parameters, and by selecting appropriate indexes. Compared to the Rule Based Optimizer1 (RBO), the CBO is more sophisticated and complex, but it also has a few drawbacks.

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