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Oracle Database 11g Performance Tuning Recipes: A Problem-Solution Approach
book

Oracle Database 11g Performance Tuning Recipes: A Problem-Solution Approach

by Sam R. Alapati, Darl Kuhn, Bill Padfield
August 2011
Intermediate to advanced content levelIntermediate to advanced
594 pages
15h 54m
English
Apress
Content preview from Oracle Database 11g Performance Tuning Recipes: A Problem-Solution Approach

C H A P T E R  15

Executing SQL in Parallel

Parallelism can help improve performance on particular operations simply by assigning multiple resources to a task. Parallelism is best used on systems with multiple CPUs, as the multiple processes used (that is, the parallel processes) will use those extra CPU resources to more quickly complete a given task.

As a general rule, parallelism is also best used on large tables or indexes, and on databases with large volumes of data. It is ideal for use in data warehouse environments, which are large by their nature. Parallelism is not well suited for OLTP environments, just because of the transactional nature of those systems.

In order to use parallelism properly, there are several important factors to ...

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Publisher Resources

ISBN: 9781430236627Purchase book