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POHow to force Npgsql to use CommandTimeout value from connection string in ASP.NET MVC3 application
 

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  1. POHow to force Npgsql to use CommandTimeout value from connection string in ASP.NET MVC3 application
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    <p>ASP.NET MVC3 application uses npgsql 2.0.12.0 to get data in Mono with mod_mono. Sometimes timeout exceptions below occur. Request duration is 31 seconds if exception occurs.</p> <p>CommandTimeout in connection string is set to 5 minutes using</p> <pre><code> NpgsqlConnectionStringBuilder csb = new NpgsqlConnectionStringBuilder() { CommandTimeout = 5*60, // 5 min Host = Config.Server, Database = Config.DefaultDataBase, UserName = Config.ServerUser, Port = Config.Port, SslMode = SslMode.Prefer, SSL = true, }; </code></pre> <p>How to force npgsql use use timeout 5 minutes and not to throw excpetion after 31 seconds ? In postgresql.con file statement_timeout is not set so it looke like this is not coming from server.</p> <p>Query is executed using ExecuteReader:</p> <pre><code> using (IDbConnection conn = DataAccessBase.CreateConnection()) using (IDbCommand cmd = conn.CreateCommand()) { cmd.CommandType = CommandType.Text; cmd.CommandText = string.Format(command, paramNames); conn.Open(); using (var reader = cmd.ExecuteReader(CommandBehavior.CloseConnection | CommandBehavior.SingleResult)) { if (reader.Read()) { string[] names = new string[reader.FieldCount]; for (int i = 0; i &lt; names.Length; i++) { names[i] = reader.GetName(i); } Func&lt;IDataRecord, MyDataContext, T&gt; objInit = InitializerCache&lt;T&gt;.GetInitializer(names, ConvertValue != null); do { // walk the data yield return objInit(reader, this); } while (reader.Read()); } while (reader.NextResult()) { } // ensure any trailing errors caught } } </code></pre> <p>Exception occurs after 31 seconds from start of request.</p> <p>Request header:</p> <pre><code>Connection Keep-alive Accept */* Accept-Encoding gzip,deflate From googlebot(at)googlebot.com User-Agent Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html) </code></pre> <p>Exception:</p> <pre><code>Npgsql.NpgsqlException: A timeout has occured. If you were establishing a connection, increase Timeout value in ConnectionString. If you were executing a command, increase the CommandTimeout value in ConnectionString or in your NpgsqlCommand object. at Npgsql.NpgsqlState.ProcessBackendResponsesEnum (Npgsql.NpgsqlConnector context) [0x00000] in &lt;filename unknown&gt;:0 at Npgsql.NpgsqlReadyState.QueryEnum (Npgsql.NpgsqlConnector context, Npgsql.NpgsqlCommand command) [0x00000] in &lt;filename unknown&gt;:0 at Npgsql.NpgsqlConnector.QueryEnum (Npgsql.NpgsqlCommand queryCommand) [0x00000] in &lt;filename unknown&gt;:0 at Npgsql.NpgsqlCommand.GetReader (CommandBehavior cb) [0x00000] in &lt;filename unknown&gt;:0 at Npgsql.NpgsqlCommand.ExecuteReader (CommandBehavior cb) [0x00000] in &lt;filename unknown&gt;:0 </code></pre>
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    1. USAndrus
    1. USAndrus
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    1. COCan you try setting the command timeout where you call the ExecuteReader()? If it works, it will confirm there is a problem passing the commandtimeout from connectionstring down to NpgsqlCommand objects. Thanks in advance.
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      1. POHow to force Npgsql to use CommandTimeout value from connection string in ASP.NET MVC3 application
      1. USFrancisco Junior
    2. COI think I have a similar problem: http://stackoverflow.com/q/20265827/198048 is this an NpgSQL Bug?
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      1. POHow to force Npgsql to use CommandTimeout value from connection string in ASP.NET MVC3 application
      1. USMr Shoubs
 

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