How to write a .Net application that works with both SqlServer and Oracle (now that System.Data.OracleClient is deprecated)

Question

see also System.Data.OracleClient namespace discontinued?

(Firstly don’t panic yet, System.Data.OracleClient is not being removed by Microsoft yet, however it is not

Answer 1

I believe that ODBC can still use both SQL Server and Oracle with some transparency, so I would take a look at using ADO.Net with the ODBC provider. It won't give you all of the performance or features that SqlClient or OracleClient would, but it should be pretty close to the same code for Oracle or SQL Server.