ORA-28446
cannot perform database dictionary rekey or delete key operation due to missing current encryption key
Cause
The database dictionary rekey or delete key operation requires access to the current encryption key. The database could not find an existing data encryption key.
Action
Review the ALTER DATABASE DICTIONARY entry in the Oracle Database documentation. Ensure the following:
- The Transparent Data Encryption (TDE) keystore exists.
- The TDE keystore is open.
- The data encryption key exists in the TDE keystore.