Autonomous Database configures and optimizes your database for you. You do not need to perform administration operations for configuring the database. SQL commands used for database administration such as CREATE TABLESPACE are not available. Similarly, other administrative interfaces and utilities such as RMAN are not available.

There are differences, depending on your workload: Data Warehouse, Transaction Processing, or JSON Database. See the following section appropriate to your workload:

• Data Warehouse Workload with Autonomous Database
  Autonomous Database configures and optimizes your database for you, based on your workload.
• Transaction Processing and JSON Database Workloads with Autonomous Database
  Autonomous Database configures and optimizes your database for you, based on your workload.