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TDE Master key rotation

in Database Administration (MOSC) 1 commentAnswered

I would like to ask the best practice for rotating the master key for at rest encryption of oracle tablespaces.

We have a keystore wallet stored in oracle ASM. We have encrypted a number of tablesapces. When a new key is generated, is it necessary to run the command to tell oracle to use the new key?

administer key management use key 'AWmqc/+MQk/Nv3dSBLsi4CYAAAAAAAAAAAAAAAAAAAAAAAAAAAAA' IDENTIFIED BY <password> WITH BACKUP;

Also, what is the best practice for the old master key, which remains in the wallet? I understand that there is not a way to delete it and, if there was, should we?

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