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TDE: Why there is a need to generate new master key at all

edited Jul 1, 2022 7:28AM in Database Administration (MOSC) 8 comments

Hi

Oracle 19.9

My question is, whenever we already have master keys present for all the databases, what is the purpose of generating the new one for certain or all the databases..?

And whenever we generate new master key for certain database which have tablespaces already encrypted with previous master key, do I need to decrypt/encrypt these tablespaces all over again or no need for that..?

At least when I tried this and generate new key for cdb$root, where I had previously encrypted a tablespace with different master key, then I was able to read this data just fine.

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