Why index became invalid? (Doc ID 1576700.1)

Last updated on JUNE 16, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Information in this document applies to any platform.

Goal

Indexes should have status as VALID to become usable by queries however sometimes it may have status as UNUSABLE and this note explains those causes.
 

Solution

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