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Common Questions on Indexes on Partitioned Table (Doc ID 1481609.1)

Last updated on OCTOBER 13, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Purpose

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product.  Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

To answer common questions, provide directions to readers to the relevant information related to indexes on partitioned table.

Types of indexes of our focus in this article:

Questions and Answers

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In this Document
Purpose
Questions and Answers
 What is local and global index?
 What is prefixed and non prefixed index?
 Can I create nonprefixed global partitioned index?
 Can I create UNIQUE partitioned index?
 Can I create partitioned bitmap index?
 What types of partitioning can I choose for a global index?
 Can i subpartition global index?
 Why indexes on partitioned table become UNUSABLE?
 What happens with my queries against partition table having unusable indexes?
 How can I prevent indexes become UNUSABLE during maintenance operation of table partitions?
 What are the performance implications of local indexes?
 What are the performance implications of global indexes?
 How to Determine Whether an Index is Global or Local
 Still have questions?
References

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