Enable TDE with Data Guard
I working on TDE with Dataguard enabled using oracle document as below:
(https://www.oracle.com/technetwork/database/availability/tde-conversion-dg-3045460.pdf
Converting to Transparent Data Encryption with Oracle Data Guard using Fast Offline Conversion
Oracle Database 12c and Oracle Database 11.2
High Level Steps
1. Verify that the Data Guard configuration is healthy and contains no gaps.
2. Create the encryption wallet, and set the master key.
3. Copy the wallet files to the standby database environment.
4. Place the standby in a mounted state with recovery stopped.
5. On the standby: Encrypt data files in-place and in parallel.
6. On the standby: Restart redo apply and catch up.