Application-Aware Migration Example: Migrating your Oracle Databases from AWS to Oracle Cloud Infrastructure

https://cloud.oracle.com/cloud-infrastructure/migration/preparation

Oracle offers a full array of high-performing and reliable options for running
Oracle databases, including 
Oracle Exadata, Oracle Real Application Clusters (RAC), and
Oracle Autonomous Database.

Migrating Oracle databases from AWS to Oracle Cloud Infrastructure is easy.
Migration teams can choose from a large collection of industry-standard tools 
that can help, such as 
GoldenGate, Data Guard, RMAN, and Oracle Data Pump. 

The correct choice of migration tools depends on factors like the 
version and size of databases, bandwidth and connectivity, and
 the amount of downtime an organization can tolerate. 
Read this whitepaper for expert advice on migrating databases from AWS to Oracle.