Hi Brad -
The only way to access data and logic in an Oracle Database Cloud Service is through an Application Express application running in the Service, a Java application running in the Java Cloud Service, or with RESTful Web Services. If any application can fit into one of these categories, they can use the Service.
Hope this helps.
- Rick Greenwald
You can use SQL Developer to make a cloud connection and run SQL scripts into the database. Alternatively you can use Apex upload and run scripts.
You cannot connect to the cloud database using any third party ETL tools.