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| 1 | +using Oracle.ManagedDataAccess.Client; |
| 2 | +using System.Threading.Tasks; |
| 3 | +using System.Threading; |
| 4 | +using System; |
| 5 | + |
| 6 | +// This code sample demonstrates using asynchronous ODP.NET (managed or core) and times its execution time. |
| 7 | +// This sample uses the Oracle HR sample schema. |
| 8 | + |
| 9 | +class ODPNET_Async |
| 10 | +{ |
| 11 | + public static async Task Main() |
| 12 | + { |
| 13 | + // Add password and data source to connect to your Oracle database |
| 14 | + string conString = @"User Id=hr;Password=<PASSWORD>;Data Source=<NET SERVICE NAME>;"; |
| 15 | + |
| 16 | + using (OracleConnection con = new OracleConnection(conString)) |
| 17 | + { |
| 18 | + // Measure time OpenAsync takes before next operation can start execution |
| 19 | + DateTime start_time = DateTime.Now; |
| 20 | + Task task = con.OpenAsync(); |
| 21 | + DateTime end_time_open = DateTime.Now; |
| 22 | + |
| 23 | + // Simulate operation that takes one second |
| 24 | + Thread.Sleep(1000); |
| 25 | + |
| 26 | + string cmdText = "SELECT * FROM EMPLOYEES FETCH FIRST 100 ROWS ONLY"; |
| 27 | + using (OracleCommand cmd = new OracleCommand(cmdText, con)) |
| 28 | + { |
| 29 | + // Retrieve open connection with "await" |
| 30 | + await task; |
| 31 | + |
| 32 | + // Execute SELECT statement asynchronously |
| 33 | + using (OracleDataReader reader = await cmd.ExecuteReaderAsync()) |
| 34 | + { |
| 35 | + // Retrieve results asynchronously |
| 36 | + await reader.ReadAsync(); |
| 37 | + } |
| 38 | + } |
| 39 | + // Measure time all the async operations took |
| 40 | + DateTime end_time_all = DateTime.Now; |
| 41 | + |
| 42 | + // Calculate connection open time and write result to console |
| 43 | + TimeSpan ts_open = end_time_open - start_time; |
| 44 | + double ts_open1 = Math.Round(ts_open.TotalSeconds, 2); |
| 45 | + Console.WriteLine("Asynchronous connection open time: " + ts_open1 + " seconds"); |
| 46 | + |
| 47 | + // Calculate overall operation time and write to console |
| 48 | + TimeSpan ts_all = end_time_all - start_time; |
| 49 | + double ts_all1 = Math.Round(ts_all.TotalSeconds, 2); |
| 50 | + Console.WriteLine("Asynchronous ODP.NET operations time: " + ts_all1 + " seconds"); |
| 51 | + } |
| 52 | + } |
| 53 | +} |
| 54 | + |
| 55 | +/* Copyright (c) 2023 Oracle and/or its affiliates. All rights reserved. */ |
| 56 | + |
| 57 | +/****************************************************************************** |
| 58 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 59 | + * you may not use this file except in compliance with the License. |
| 60 | + * You may obtain a copy of the License at |
| 61 | + * |
| 62 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 63 | + * |
| 64 | + * Unless required by applicable law or agreed to in writing, software |
| 65 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 66 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 67 | + * See the License for the specific language governing permissions and |
| 68 | + * limitations under the License. |
| 69 | + * |
| 70 | + *****************************************************************************/ |
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