OracleBulkCopy

private void BulkCopy(string connStr, DataTable dt, string tblName) { 
            if (dt.Rows.Count > 0) { 
                using (var bc = new OracleBulkCopy(connStr)) { 
                    bc.DestinationTableName = tblName; 
                    foreach (DataColumn col in dt.Columns) { 
                        bc.ColumnMappings.Add(col.ColumnName, col.ColumnName); 
                    } 
                    bc.WriteToServer(dt); 
                } 
            } 
        }