Oracle 12c In-memory Performance issue when there are partitions/subpartitons indexes marked unusable
Last updated on DECEMBER 14, 2017
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 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.
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