Has anyone had any luck connecting to a SQL Server 2017 database as a data source in the RPD? And if so, is it supported by Oracle?
12.2.1.4 is certified to run with SQL Server 2016. 2017 isn’t certified therefore it won’t be supported if you run into any issues even if you’re able to get it working.
You can check certifications on the support.oracle.com site on the certifications tab.