Question

I have windows service that’s select some records. And it works like this:

using (SqlConnection conn = new SqlConnection(CMS.SettingsProvider.SqlHelperClass.ConnectionString))
{
    conn.Open();
    SqlCommand command = new SqlCommand("SELECT...", conn);
    SqlDataReader reader = command.ExecuteReader();
    if (reader.HasRows)
    {
        while (reader.Read())
        {
            <snip>
            build item IDs to update
        }
        UpdateRecords(conn, itemIDs);
    }
}

EDIT

Update function:

private void UpdateRecords(SqlConnection Connection, List<int> ItemIDs)
        {
            SqlCommand command = new SqlCommand("update table...", Connection);
            command.ExecuteNonQuery();
        }

I installed it as windows service in QA server and it updated records. In production server it’s not updating records. Log indicates update procedure is not even called. What could be the reason?

Thanks!

Answer 1

Preventive Action

 1. SQL Server Profiler
 2. Code debugging using production Database credentials

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Sample Reference

SQL SERVER – Introduction to SQL Server 2008 Profiler

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Corrective Actions/Code Corrections

using (System.Data.SqlClient.SqlConnection con = new SqlConnection("YourConnection string")) 
{
    con.Open();
    using(SqlCommand cmd = new SqlCommand())
    { 
        string expression = "Parameter value";
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.CommandText = "Your Stored Procedure";
        cmd.Parameters.Add("Your Parameter Name", SqlDbType.VarChar).Value = expression;
        cmd.Connection = con;
        using (IDataReader dr = cmd.ExecuteReader()) 
        {
            if (dr.Read()) 
            {
            }
        }
    }
}

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Inbuilt SQL SERVER Profiler ScreenShot