According to this post in the ADO .NET team blog, Microsoft deprecates OracleClient as a part of ADO.NET roadmap. Microsoft strongly recommends customers to use third-party ADO.NET providers for Oracle instead of continuing to use Microsoft’s OracleClient for new application development.
Devart offers dotConnect for Oracle – fast and reliable ADO.NET provider for the wide range of users. Our ADO.NET provider is the most compatible with OracleClient provider, and it provides the easiest migration from OracleClient. It allows you to migrate easily without effort.