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Oracle TDE provides flexible encryption options for both database and tablespace levels. The default encryption standard for database and tablespace encryption is AES128, while AES192 is used for column-level encryption. For added security, a random string, known as SALT, is appended to plaintext before encryption in column-level encryption. SALT enhances security but cannot be applied to indexed columns.
Oracle's Transparent Data Encryption (TDE) is a pivotal feature for securing sensitive information in your database. It offers robust encryption for data stored in tables, tablespaces, and backups, ensuring that unauthorized users cannot access your critical data. TDE relies on external security modules, known as TDE wallets or keystores, to manage and protect encryption keys.
Oracle 19c brings a host of new features and enhancements to Real Application Cluster (RAC), significantly improving resource management, cluster flexibility, and overall performance. Here’s a breakdown of the key updates: