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ORA-28340 While Tring To Re-enctypt Tablespace Offline On ADG Standby DB (Doc ID 3036299.1)

Last updated on SEPTEMBER 02, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.20.0.0.0 and later
Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Oracle Database Cloud Exadata Service - 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
Information in this document applies to any platform.

Symptoms

To change the TDE encryption algorithm from AES128 to AES256, encountered ORA-28340 error when trying to rekey the existing tablespace in ADG Standby DB.
1. startup database to mount state
2. alter tablespace <TABLESPACE_NAME> ENCRYPTION OFFLINE DECRYPT; -- successful
3. alter tablespace<TABLESPACE_NAME> ENCRYPTION OFFLINE USING 'AES256' ENCRYPT; -- failed with ORA-28340

Changes

 To change the TDE encryption algorithm from AES128 to AES256.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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