My Oracle Support Banner

Oracle 12c In-memory Performance issue when there are partitions/subpartitons indexes marked unusable (Doc ID 2106224.1)

Last updated on AUGUST 23, 2022

Applies to:

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


SQL running against in-memory and non in-memory partition/subpartitions takes longer because there are partition/subpartitions indexes marked unusable, which are not being scanned by the SQL, leading Full Table Scan instead of Index Range Scan access.




To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.