Performance Degradation Due to Row Chaining on Compressed Table
(Doc ID 1204203.1)
Last updated on FEBRUARY 20, 2019
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199.0 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.
When table compression or tablespace compression are used, row chaining occurs after an update. However, when the same table is not compressed and resides in a non compressed tablespace row chaining does not occur. This appears to be affecting performance.
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