Hi, Irem It's great to see you inquiring, and I'd like to know about your experiences integrating Oracle EBS.
Oracle ERP EBS has native SOA gateways(ISG) that may be marked as REST so that PL SQL APIs can be used.
As an alternative, the Oracle E-Business Suite Adapter can be used to consume all incoming and outgoing integration, including Business Events, using well-known integration tools as Oracle SOA/OSB, and Oracle integration Cloud then also IBM ESB , Boomi , MuleSoft also do have plugins/Adapter for ERP Applications.
Regards