Use an elastic pool to consolidate your Autonomous Database instances, in terms of their allocation of compute resources, and to provide up to 87% cost savings.

• About Elastic Pools
  Elastic pools help you improve operating efficiency and reduce costs by bringing all of your databases to the Cloud. This also supports consolidating resources and simplifying administration and operations by using Autonomous Database.
• Create, Join or Manage an Elastic Pool
  Shows the steps to create, join, or manage an elastic pool.
• List Elastic Pool Members
  Shows the steps for the pool leader to list elastic pool members.
• Remove Pool Members from an Elastic Pool
  As an elastic pool member you can remove yourself from an elastic pool. As an elastic pool leader you can remove pool members from an elastic pool.
• Terminate an Elastic Pool
  Shows the steps to terminate an elastic pool. Only the pool leader can terminate an elastic pool.
• Elastic Pool Notes
  Provides information about elastic pool usage.