Hi,
This is not a blocking bug, but we have an exception throw by OracleConnection.Open() when we activate "Common Language Runtime Exceptions" in VS 2012.
When we try to open the first connection, OracleConnection.Open() throw a socket Exception "No such host is known" ErrorCode 11001 and open the connection.
No problem after that or if we desactivate "Common Language Runtime Exceptions".
Whe have made short investigation using Reflector, It seems to come from OracleInternal.Network.EzConnect.Resolve(string TNSAlias, out ConnectionOption CO, string InstanceName = null) when you try to do : if (Dns.GetHostAddresses(CO.Host) == null).
Best Regard,