oracle data bulk insert

public void WriteToServer( OracleConnection oracleConnection, string qualifiedDBName, DataTable dataTable )
{
 try
 {
   using ( OracleBulkCopy bulkCopy = new OracleBulkCopy( oracleConnection ) )
   {
     bulkCopy.DestinationTableName = qualifiedDBName;
     bulkCopy.WriteToServer( dataTable );
   }
 }
 catch ( Exception exc )
 {
  LogException( exc, MethodBase.GetCurrentMethod( ) );
  throw;
 }
}

public DataTable CreateDataTable()
{
 try
 {
  DataTable result = new DataTable();

  DataColumn idDataColumn = new DataColumn( "ID", typeof(decimal) );
  idDataColumn.AllowDBNull = false;
  result.Columns.Add(idDataColumn);
  DataColumn nameDataColumn = new DataColumn( "NAME", typeof(string) );
  nameDataColumn.AllowDBNull = false;
  result.Columns.Add(nameDataColumn);
  
  DataColumn[] keys = new DataColumn[1];
  keys[0] = idDataColumn;
  result.PrimaryKey = keys;

  return result;
 }
 catch (Exception exc)
 {
  LogException(exc, MethodBase.GetCurrentMethod());
  throw;
 }
}