Scale In a Cluster
To reduce resource usage in response to smaller workloads, you can scale in an Oracle Java Cloud Service instance by removing a node.
You can perform a scale-in operation for a service instance that has at least two nodes. To remove all nodes, you must delete the service instance.
If backups are configured for the service instance, Java Cloud Service attempts to create a backup before scaling the instance.
Wait for any maintenance operations on this service instance to complete, such as backup, restoration or patching operations, before you begin.