Switching from Microsofts Oracle Driver to ODP.NET version 10.2.0.100. After changing the data types to OracleDBTypes in a procedure, that worked perficetly using System.Data.OracleClient, the procedure fails if we try and pass in more that 20 parameters. The error returned is:

ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'ADD_TARP_EVENT' ORA-06550: line 1, column 7: PL/SQL: Statement ignorede

If we reduce the number of parameters to less than 20 it works. Is this a known issue?

Thanks,

Dave

Here the code for creating the parameters:

    Shared Function CreateTarpEventCommand(ByVal aTarpEvent As TARPEventType) As OracleCommand
    Dim cmd As New OracleCommand

    With aTarpEvent

        cmd.Parameters.Add(New OracleParameter("I_facID_C", OracleDbType.Char)).Value = .FacilityShortName
        cmd.Parameters.Add(New OracleParameter("I_facName_VC", OracleDbType.Varchar2)).Value = .FacilityLongName
        cmd.Parameters.Add(New OracleParameter("I_client_VC", OracleDbType.Varchar2)).Value = .ComputerNameTarpIsRunningOn
        cmd.Parameters.Add(New OracleParameter("I_TARP_Version_VC", OracleDbType.Varchar2)).Value = .TarpVersionNumber
        cmd.Parameters.Add(New OracleParameter("I_NAS_Type_VC", OracleDbType.Varchar2)).Value = .FacilityNASSystemType
        cmd.Parameters.Add(New OracleParameter("I_Aircraft1_Callsign_VC", OracleDbType.Varchar2)).Value = .Aircraft1Callsign

        If .Aircraft1Type Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Aircraft1_Type_VC", OracleDbType.Varchar2)).Value = .Aircraft1Type
        End If

        If .Aircraft1Category Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Aircraft1_Cat_VC", OracleDbType.Varchar2)).Value = .Aircraft1Category
        End If

        cmd.Parameters.Add(New OracleParameter("I_Aircraft2_Callsign_VC", OracleDbType.Varchar2)).Value = .Aircraft2Callsign

        If .Aircraft2Type Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Aircraft2_Type_VC", OracleDbType.Varchar2)).Value = .Aircraft2Type
        End If

        If .Aircraft2Category Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Aircraft2_Cat_VC", OracleDbType.Varchar2)).Value = .Aircraft2Category
        End If

        If .SensorShortName Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Sensor_Name_VC", OracleDbType.Varchar2)).Value = .SensorShortName
        End If


        If .TarpConfigurationName Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_TARP_Config_Name_VC", OracleDbType.Varchar2)).Value = .TarpConfigurationName
        End If

        If .EntryCreatorID Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Create_VC", OracleDbType.Varchar2)).Value = .EntryCreatorID
        End If

        If .LogAction Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Log_Action_VC", OracleDbType.Varchar2)).Value = .LogAction
        End If

        cmd.Parameters.Add(New OracleParameter("I_TARP_Mode_VC", OracleDbType.Varchar2)).Value = .TarpOperatingMode
        cmd.Parameters.Add(New OracleParameter("I_Min_Loss_N", OracleDbType.Decimal)).Value = .ClosestMeasureOfLoSS

        If .MapName Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_MAP_NAME_VC", OracleDbType.Varchar2)).Value = .MapName
        End If

        If .TarpConfigurationFileHash Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_CONFIG_HASH_VC", OracleDbType.Varchar2)).Value = .TarpConfigurationFileHash
        End If

        Dim aDate As OracleDate = CType(.LossEventsMessages(0).LossEventTime, System.DateTime)
        cmd.Parameters.Add(New OracleParameter("I_FIRST_LOSS_EVENT_DATE", OracleDbType.Date)).Value = aDate
        cmd.Parameters.Add(New OracleParameter("I_FIRST_LOSS_EVENT_MS_N", OracleDbType.Int32)).Value = .LossEventsMessages(0).LossEventMilliSeconds

        If .ZippedMapFiles Is Nothing Then
            cmd.Parameters.Add(New OracleParameter("I_Map_File_BL", OracleDbType.Blob)).Value = .ZippedMapFiles
        End If

        cmd.Parameters.Add(New OracleParameter("I_TARP_Package_BL", OracleDbType.Blob)).Value = .ZippedTarpPackageWithoutMaps

        cmd.Parameters.Add(New OracleParameter("rs_RESULTS", OracleDbType.RefCursor)).Direction = ParameterDirection.Output

    End With
    Return cmd
End Function

And here is the code for executing the procedure:

 Dim workingDataSet As New DataSet
    Dim oracleConnection As New OracleConnection
    Dim cmd As New OracleCommand
    Dim oracleDataAdapter As New OracleDataAdapter

    Try

         Using oracleConnection
            oracleConnection.ConnectionString = System.Configuration.ConfigurationManager.AppSettings("MasterConnectionODT")
            cmd = HelperDB.CreateTarpEventCommand(TarpEvent)

            cmd.Connection = oracleConnection
            cmd.CommandText = "LOADER.ADD_TARP_EVENT"
            cmd.CommandType = CommandType.StoredProcedure

            Using oracleConnection
                oracleConnection.Open()
                Dim aTransation As OracleTransaction = oracleConnection.BeginTransaction(IsolationLevel.ReadCommitted)
                Try
                    Using oracleDataAdapter
                        oracleDataAdapter = New OracleDataAdapter(cmd)
                        oracleDataAdapter.TableMappings.Add("Results", "rs_Max")
                        oracleDataAdapter.Fill(workingDataSet)

....