OATS aka Open script doesn't support its API to call in another tool.
Oracle EBS forms automation best fits with OATS tool and is an Oracle tool.
It has whole bunch of features Functional testing, Load testing and Webservices . It has its own Test Management tool with reporting.
The tool is built on top of Eclipse IDE. You can integrate with other tool and jar libraries
http://www.oracle.com/technetwork/oem/app-test/index.html https://docs.oracle.com/cd/E25294_01/doc.920/e15487/chap3_os_fm.htm
