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Oracle Data Warehouse Tuning for 10g
book

Oracle Data Warehouse Tuning for 10g

by Gavin JT Powell
April 2011
Intermediate to advanced content levelIntermediate to advanced
504 pages
16h 49m
English
Digital Press
Content preview from Oracle Data Warehouse Tuning for 10g
6.3 Tuning Queries with Partitioning 153
Chapter 6
6.3 Tuning Queries with Partitioning
This section examines how queries behave when using Oracle Partitioning.
The four areas to be discussed are: understanding EXPLAIN PLAN com-
mand results, parallel processing as applied to partitioning, partition prun-
ing, and partition-wise joins.
6.3.1 Partitioning EXPLAIN PLANs
The EXPLAIN PLAN command produces an assessment of the way in
which a query could be executed by the optimizer,[1] generating results
into a table called PLAN_TABLE, more commonly known as the query
plan table. The four columns OTHER_TAG, PARTITION_START,
PARTITION_STOP, and PARTITION_ID will ...
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Publisher Resources

ISBN: 9781555583354