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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
142
6.1
What Are Partitioning and Parallel Processing?
tions. Since hash partitioning does not provide a business perspective
split, it is more useful in terms of improving internal I/O perfor-
mance, such as when processing multiple partitions in parallel. Good
uses for hash partitioning include very large, unmanageable tables;
tables requiring frequent reindexing; unevenly distributed range or
list values creating skewing across partitions sizes; or any situation
where an even physical spread is important. Hash partitioning is
often most useful in getting good performance for partitioning prun-
ing and partition-wise joins (see later in this chapter) ...
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Publisher Resources

ISBN: 9781555583354