Thanks for reaching out.
Azure Key Vault APIs can be integrated at large scale and can be used for Transparent Data Encryption.
Oracle Keys for TDE can be stored in an HSM to manage keys across servers, protect keys with hardware.
However, it depends on the Oracle how they connect with Azure Key Vault to store these keys.
I would suggest you check with Oracle on how to integrate their database TDE with Azure Key Vault.
Thanks,
Shweta
Hope this will help.
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