November 2009
Intermediate to advanced
576 pages
12h 25m
English
Content preview from Oracle SQL Recipes: A Problem-Solution ApproachBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 15. Partitioning
If you work with large tables and indexes, at some point you'll experience some performance degradation as the row counts grow into the hundreds of millions. Even efficiently written SQL executing against appropriately indexed tables will eventually slow down as table and index sizes grow into the gigabytes, terabytes, or even higher. For such situations you'll have to devise a strategy that allows your database to scale with increasing data volumes.
Oracle provides two key scalability features: parallelism and partitioning—mechanisms that enable good performance even with massively large databases. Parallelism allows Oracle to start more than one thread of execution to take advantage of multiple hardware resources. Partitioning ...
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