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ExaCS / ExaCC / ExaBM / ODA / Exadata : ACFS Fix To Improve Performance with ACFS Encryption Enabled (Doc ID 2540525.1)

Last updated on MARCH 12, 2021

Applies to:

Oracle Database Exadata Cloud Machine - Version N/A to N/A
Oracle Database Cloud Exadata Service - Version N/A to N/A [Release 1.0]
Oracle Database Appliance Software - Version 12.1.2 to 18.1 [Release 12.1 to 12.2]
Gen 2 Exadata Cloud at Customer X8-2 Hardware - Version All Versions to All Versions [Release All Releases]
Oracle Exadata Storage Server Software - Version 12.1.2.2.0 and later
Information in this document applies to any platform.

Symptoms

A) Enabling ACFS encryption has a severe performance impact.

B) Performance drops significantly when ACFS encryption is enabled.

C) This problem is exemplified as follows:

 


 

1) Current ACFS release for this example = 12.2.0.1.0:



Cause

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