- Oracle patch the full stack-including the firmware, the OS, clusterware, and the database.
- Oracle Autonomous Database is actually a family of cloud services, with each member of the family optimized by workload. Autonomous Data Warehouse (ADW), which has been optimized for analytic workloads and Autonomous Transaction Processing (ATP). ATP is optimized for transaction processing or mixed workload.
- it is possible to use Oracle Data Safe data masking capabilities with cloned instances of ADB. but by the customer
https://docs.oracle.com/en/cloud/paas/autonomous-data-warehouse-cloud/user/autonomous-key-features.html#GUID-7D0627D9-1B40-40B1-865A-84FF65A65846