Question

I’ve noticed that my code errors out on sqlWrite.ExecuteNonQuery(); after executing 200 Insert queries in couple of seconds. I always thought that using will make sure the resources are reused properly and there will be no need to do anything. This is the first time I get this error and I’ve been dealing with sql/c# for almost 3 years doing different things.

using (SqlConnection varConnection = Locale.sqlConnectOneTime(Locale.sqlDataConnectionDetails)) 
{
    using (var sqlWrite = new SqlCommand(preparedCommand, varConnection)) 
    {
        sqlWrite.Parameters.AddWithValue("@var_agr_fname", var_agr_fname == "" ? (object) DBNull.Value : var_agr_fname);
        sqlWrite.ExecuteNonQuery();
    }
}


public static SqlConnection sqlConnectOneTime(string varSqlConnectionDetails)
{
    var sqlConnection = new SqlConnection(varSqlConnectionDetails);
    try
    {
        sqlConnection.Open();
    }
    catch
    {
        DialogResult result = MessageBox.Show(new Form {TopMost = true},
                                              "Błąd połączenia z bazą danych. Czy chcesz spróbować nawiązac połączenie ponownie?",
                                              "Błąd połączenia (000001)",
                                              MessageBoxButtons.YesNo,
                                              MessageBoxIcon.Stop);
        if (result == DialogResult.No)
        {
            if (Application.MessageLoop)
            {
                Application.Exit(); // Use this since we are a WinForms app
            }
            else
            {
                Environment.Exit(1); // Use this since we are a console app
            }
        }
        else
        {
            sqlConnection = sqlConnectOneTime(varSqlConnectionDetails);
        }
    }
    return sqlConnection;
}

Error message: A transport-level error has occurred when sending the request to the server. (provider: Shared Memory Provider, error: 0 - No process is on the other end of the pipe.)

Considering advice for this error I should be using SqlConnection.ClearAllPools(); to make sure connections are reset or discarded properly. So I can use it but the question is where to use it and when? How to know if the limit is going to break? Where’s the limit? at 50 / 150 / 200 ? or should I use it every single time in a loop?

Answer 1

Those 2 errors:

A transport-level error has occurred when sending the request to the
server. (provider: TCP Provider, error: 0 – An existing connection was
forcibly closed by the remote host.)

A transport-level error has occurred when sending the request to the
server. (provider: Shared Memory Provider, error: 0 – No process is on
the other end of the pipe.)

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