Easy Connect Naming Method to connect to a dedicated server instance using Oracles OracleConnection

Connection string

This Oracle Data Provider for .NET / ODP.NET connection string can be used for connections to Oracle.

This one does not specify a service or a port.

Data Source=username/password@myserver/myservice:dedicated/instancename;

Other server options: SHARED, POOLED (to use instead of DEDICATED). Dedicated is the default.