This document provides information about configuring our HSMs with Oracle Database 19c Transparent Data Encryption (TDE) by using

From the Oracle documentation website: Transparent data encryption enables you to encrypt sensitive data, such as credit card numbers, stored in table columns. Encrypted data is transparently decrypted for a database user who has access to the data. Transparent data encryption helps protect data stored on media in the event that the storage media or data file gets stolen.