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OCI Block Volumes is the service used by default by the MySQL Database Service to store user data to make it more resistant to failures. OCI Block Volumes provides high-performance block storage volumes that can be attached to MySQL DB systems running on OCI Compute instances. Block volumes are always encrypted at rest using AES-256 encryption keys. Block volumes also support backup and restore operations using snapshots or clones that can be used for disaster recovery or testing purposes.

NoSQL Service does not provide data processing on OCI Lakehouse. According to the Oracle website5, “Oracle Lakehouse provides extensive data processing capabilities, to accommodate the migration of existing architectures or the creation of new, agile ones. You can use Autonomous Database for SQL processing; Big Data Service for Hadoop/Spark processing; OCI Data Flow for serverless Spark processing; and OCI Data Integration for data movement.” NoSQL Service is a fully managed database service that provides fast and predictable performance for simple queries on flexible schemas.

This statement is true about moving VM DB systems from one compartment to another. According to the Oracle documentation3, “To move resources between compartments, resource users must have sufficient access permissions on the compartment that the resourceis being moved to, as well as the current compartment.” The documentation also provides a step-by-step guide on how to move a DB system to another compartment using the Oracle Cloud Infrastructure Console.

Oracle Native Network Encryption and TDE are security measures that are implemented out-of-the-box, and are included if you are not using BYOL licensing with Exadata Cloud@Customer. According to the Oracle documentation5, “Oracle Native Network Encryption encrypts all data sent over the network between database clients and servers using industry-standard encryption algorithms.” Additionally, according to the Oracle documentation6, “Transparent Data Encryption (TDE) enables you to encrypt sensitive data, such as credit card numbers, stored in tables and tablespaces.”