What's the difference between OleDbConnection and OracleConnection?

Question

Such as OleDbConnection vs OracleConnection , OleDbCommand vs OracleCommand and more...

I know Oracle* classes are for Oracle DB, but OleDb* seems works too. I can not find any comparison in MSDN. Is there any consideration of preference to use Oracle* classes? What's the real difference between them?

Answer 1

To be precise you need to understand that OleDb is for Access databases or any database/application which has an OleDb provider for .NET.

Oracle* classes are specific to Oracle. Also note that OracleClient is the native provider for Oracle databases

Answer 2

As stated here Difference between oledb provider and oracle client provider (it's a quite old post but gets to the point) the OleDb provider is general to give a database-independent layer to access databases.

The Oracle connection provider is specific and provides optimized the access and bypasses the OleDb provider, in order to achieve improvements in performance and scalability.