There are 2 ways that you can quickly create an Oracle data service.
The 1st way is to create an Oracle Service Gateway (SG) that uses the stateless Apcera Service Gateway REST API. You can read more about an example of such an implementation provide by Apcera here: http://docs.apcera.com/services/types/service-oracle/. This SG provides the same functionality as the MySQL and Postgres SGs, meaning it supports all the actions required to create and delete Services, Service Bindings, and Providers. It also provides support for default and temporary table namespaces.
The 2nd way is to use the Generic SG. While this SG doesn't support creating Providers (you have to create the DB, DB users, and grant all permissions beforehand), it allow you to create a Service with the URI you provide and Service Bindings to jobs. Functionally, to a job, it provides the same end-result for your application. For more information re: Generic Services, see http://docs.apcera.com/services/types/service-generic.
Hope this helps!