This problem is specific to Oracle.DataAccess. I have no troubles using MSSQL.

I am unable to update an Oracle 12c database row using .NET and Oracle.Access 4.121.2.0. No problem retrieving data from the same Oracle Database using .NET. There is no problem updating through SQLDeveloper. 

I've cobbled together this Update command from several web sources. It encounters no error but the update just does not commit or it can't find the record to update. What am I doing wrong?

Sorry to bother you all but I am stuck and at a time crunch.
Thank you.

```
Imports Oracle.DataAccess.Client
Using connection As New OracleConnection(System.Configuration.ConfigurationManager.ConnectionStrings("LearnConnectionString").ConnectionString)
        connection.Open()

        Dim command As OracleCommand = connection.CreateCommand()
        Dim numberOfUpdatedRecords As Integer = 0

        command.CommandText = "UPDATE USERS SET BATCH_UID = :NEW_VALUE WHERE BATCH_UID = :OLD_VALUE"

        With command.Parameters
            .Clear()
            .Add(":OLD_VALUE", "name_bbadmin")
            .Add(":NEW_VALUE", "name_library")
        End With
        Try
            numberOfUpdatedRecords = command.ExecuteNonQuery()
            Console.WriteLine(String.Format("No Errors: {0} is return value.", numberOfUpdatedRecords))
        Catch ex As Exception
            Console.WriteLine(String.Format("ERROR: {0}", ex.Message))
        End Try
    End Using

```