Tuning of SQL code is generally cheaper than changing the data
model. Physical and configuration tuning involves a search for
bottlenecks that often points to SQL code or data model issues.
Building an appropriate data model and writing properly performing
SQL code can give 100%+ performance improvement. Physical and
configuration tuning often gives at most a 25% performance
increase.
Gavin Powell shows that the central theme of Oracle10gR2
Performance Tuning is four-fold: denormalize data models to fit
applications; tune SQL code according to both the data model and
the application in relation to scalability; create a
well-proportioned physical architecture at the time of initial
Oracle installation; and most important, mix skill sets to obtain
the best results.
* Fully updated for version 10gR2 and provides all necessary
transition material from version 9i
* Includes all three aspects of Oracle database tuning: data model
tuning, SQL & PL/SQL code tuning, physical plus configuration
tuning
* Contains experienced guidance and real-world examples using large
datasets Emphasizes development as opposed to operating system
perspective
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