If you are a .NET developer working with Oracle databases, you have likely encountered the dreaded FileNotFoundException regarding Oracle.ManagedDataAccess.dll . Or perhaps you are setting up a new project and wondering which DLL to reference.

: Use dotnet add package Oracle.ManagedDataAccess or Install-Package Oracle.ManagedDataAccess in the Package Manager Console. Official Oracle Website (Manual Setup) : Visit the Oracle .NET Software Downloads page. Look for the ODP.NET, Managed Driver section.

<connectionStrings> <add name="OracleDbContext" providerName="Oracle.ManagedDataAccess.Client" connectionString="Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=MyHost)(PORT=MyPort))(CONNECT_DATA=(SERVICE_NAME=MyServiceName)));User Id=myUsername;Password=myPassword;" /> </connectionStrings>

Below is a guide on where to download the DLL, how to install it, and how it differs from traditional drivers.