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Adaptive Classification and Redaction (ACR) May Consume High CPU or Memory when Redacting AHF Collections (Doc ID 2879223.1)

Last updated on JULY 19, 2022

Applies to:

Oracle Exadata Storage Server Software - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Gen 2 Exadata Cloud at Customer - Version N/A and later
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

Adaptive Classification and Redaction (ACR) may consume high CPU or memory when redacting AHF collections. This may in turn lead to a node eviction in some cases. Due to Bug 33227071, ACR is enabled by default with TFA Collector on some ExaCC and ExaCS cloud deployments.

Oracle recommends disabling redaction directly on your database server nodes.

 

To check if redaction is enabled, use the command "tfactl get redact".  If the value is SANITIZE or MASK, redaction is enabled:

Cause

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In this Document
Symptoms
Cause
Solution
References

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