Mono + Mysql = Slow - Inserts 26,000 Records Into A Mysql Database
Dec 16, 2010
Why does a very simple script which inserts 26,000 records into a mysql database (myisam, no transactions) take 13 seconds in the php implementation, and then 35-50 seconds using mono+mysql connector? I thought asp.net was faster than php? Could the problem be the mono mysql connector is "platform independent", so the performance just stinks? or does asp.net suffer more overhead than php when it comes to executing each query? Aren't there any native linux binaries for mysql connector for mono that may be faster?
My code is to update a record if it already exists in database else insert as a new record. My code is as follows:
protected void Button3_Click(object sender, EventArgs e) { OdbcConnection MyConnection = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver};Server=localhost;Database=testcase;User=root;Password=root;Option=3;"); MyConnection.Open(); String MyString = "select fil_no,orderdate from temp_save where fil_no=? and orderdate=?"; OdbcCommand MyCmd = new OdbcCommand(MyString, MyConnection); MyCmd.Parameters.AddWithValue("", HiddenField4.Value); MyCmd.Parameters.AddWithValue("", TextBox3.Text); using (OdbcDataReader MyReader4 = MyCmd.ExecuteReader()) { //** if (MyReader4.Read()) { String MyString1 = "UPDATE temp_save SET order=? where fil_no=? AND orderdate=?"; OdbcCommand MyCmd1 = new OdbcCommand(MyString1, MyConnection); MyCmd1.Parameters.AddWithValue("", Editor1.Content.ToString()); MyCmd1.Parameters.AddWithValue("", HiddenField1.Value); MyCmd1.Parameters.AddWithValue("", TextBox3.Text); MyCmd1.ExecuteNonQuery(); } else { // set the SQL string String strSQL = "INSERT INTO temp_save (fil_no,order,orderdate) " + "VALUES (?,?,?)"; // Create the Command and set its properties OdbcCommand objCmd = new OdbcCommand(strSQL, MyConnection); objCmd.Parameters.AddWithValue("", HiddenField4.Value); objCmd.Parameters.AddWithValue("", Editor1.Content.ToString()); objCmd.Parameters.AddWithValue("", TextBox3.Text); // execute the command objCmd.ExecuteNonQuery(); } } }
I am getting the error as: ERROR [42000] [MySQL][ODBC 3.51 Driver][mysqld-5.1.51-community]You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'order,orderdate) VALUES ('04050040272009',' &' at line 1
The datatype for fields in table temp_save are:
fil_no-->INT(15)( to store a 15 digit number) order-->LONGTEXT(to store contents from HTMLEditor(ajax control)) orderdate-->DATE(to store date)
We have ASP.NET Application in Test server. For first time access the Login page of that application load time is slow. Response time is around 25-30 sec. After that I refershed the page or Opened with a new browser, loading of Login Page is around 1-2 sec.
Only user name & password columns are there in login page. Is there any way I can reduce the response time for first time loading?
underline db mysql. we are using godaddy virtual server windows.
I have used ASD.NET code using SQL Database for Transaction operation successfully. By changing the Database Code to interface with MYSQL an Error occurs. If I remove the Transaction Code from within the the application, it works OK by displaying the MYSQL data (Read Only) in the layout of the application. I am using Mysql Essential-4.1.22-win32 and MYSQL Connector ODBC-3.51.2. My objective is to EDIT the MYSQL Data.
I am trying to insert html pages to MySQL with my Asp.NET project but i am getting error; You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'de Osman patlaması', '', '<div style="text-align: center"> <img src="/i' at line 1
How can i fix that problem my server side code is;
I have Revision column in Quote table with time stamp (MySql table) now i am viewing the entire date and time my end user want to view only Date he doesnot want to see time how can i pull only date.i am displaying revision column in two ways one in grid view and another one in field value
Query in my Grid view
Dim query As String = "SELECT QuoteNumber,Revision,Vendor,PartNumber,status,Customer,Requestor from quotes"
On select check box in grid view, filed values will be loaded with data.
I am using asp.net 2010 with mysql database. Is it practical for large amounts of data ? say 10 million records ? cuz some people said to me that using this combination, i'll be having performance issues as database grows.
I'm trying to delete a bunch of records in mysql. The record info to delete (userid, name) is stored in an arraylist. It seems to only delete the first record and gives an error ("Transaction has already been rolled back or is not pending.") afterwards. I have the transaction commit inside the loop which I think is the issue but not sure how to go further if I bring it outside of the loop. Here's the relevant bits of the code.
try { ArrayList alist = new ArrayList(); //alist gets populated with data like (12345,robot)(23456,car) here. MySqlConnection conn2 = new MySqlConnection(query_connection); conn2.Open(); MySqlCommand command2 = conn2.CreateCommand(); MySqlTransaction mytransaction; mytransaction = conn2.BeginTransaction(); command2.Transaction = mytransaction; for (int i = 0; i < alist.Count; i++) { string[] s = alist[i].ToString().Split(','); try { command2.CommandText = "DELETE from users_settings WHERE UserID=" + s[0].ToString(); command2.ExecuteNonQuery(); command2.CommandText = "DELETE from users WHERE ID=" + s[0].ToString(); command2.ExecuteNonQuery(); mytransaction.Commit(); } catch (Exception e){ mytransaction.Rollback(); } } } catch(Exception e){ }
I've installed the Components from the links below. But I still can't find any SQL references when I try to add them? I'm wondering if anyone would know the reason for this? I just started with asp.net. I've found several other questions regarding code for connecting but I can't find anyone who've had trouble with the Connector/components before?
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I want to use MVC 2 with MySQL database. Is it possible?because my shared hosting limits the size of SQL Server database, but there is no limit on Size of MySQL database.MySQL seems to take less disk space than SQL Server database which is costly on the Internet.
protected void Button3_Click(object sender, EventArgs e) { //Create a connection to the database MySqlConnection conn = new MySqlConnection("Database=kid07025;Data Source=195.178.228.254;User Id=kid07025;Password=********"); //open the connection conn.Open(); //MySQL Query which updates the row where Anvandarnamn = Anvandarnamn (recieved from a cookie) MySqlCommand cmd = new MySqlCommand("UPDATE personer SET Information=?Information,Fnamn=?Fnamn,Enamn=?Enamn,Personnr=?Personnr,Adress=?Adress,Postnr=?Postnr,Ort=?Ort WHERE Anvandarnamn=?Anvandarnamn", conn); // Update with new text cmd.Parameters.AddWithValue("?Anvandarnamn", Request.Cookies["Anvandarnamn"].Value); cmd.Parameters.AddWithValue("?Information", TextBox1.Text); cmd.Parameters.AddWithValue("?Fnamn", TextBox2.Text); cmd.Parameters.AddWithValue("?Enamn", TextBox3.Text); cmd.Parameters.AddWithValue("?Personnr",TextBox4.Text); cmd.Parameters.AddWithValue("?Adress", TextBox5.Text); cmd.Parameters.AddWithValue("?Postnr", TextBox6.Text); cmd.Parameters.AddWithValue("?Ort", TextBox7.Text); cmd.ExecuteReader(); conn.Close(); RefreshProfile(); }
I don't know what I am doing wrong here, but the database doesn't get updated when I press the button.
When I build the website and upload everything as it is, I get this error:
Quote:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) I guess I have to deploy Database, or?
Code: Sub btnLogin_OnClick(Src As Object, E As EventArgs) Dim myConnection As OleDbConnection Dim myCommand As OleDbCommand [code]....
I found this code for user authentication. How secure is this? Can this be bypassed? Can I protect a MySQL database with a password? Can people see a MySQL database's data if it's not protected?
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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="HW5._Default" %> <script> public class DataAccess { private string _strConn = @"Driver= {MySQLODBC 3.51 Driver};SERVER=localhost;DATABASE=test1;"; private OdbcConnection _objConn; public DataAccess() { this._objConn = new OdbcConnection(this._strConn); } // This function adds the Images to database public string addImage(timestamp id, byte [] data,string extension) { string strSql = "SELECT * FROM File"; DataSet ds = new DataSet("Image"); OdbcDataAdapter tempAP = new OdbcDataAdapter(strSql,this._objConn); OdbcCommandBuilder objCommand = new OdbcCommandBuilder(tempAP); tempAP.Fill(ds,"Table"); try { this._objConn.Open(); DataRow objNewRow = ds.Tables["Table"].NewRow(); objNewRow["Extension"] = extension; objNewRow["Data"] = buffer; objNewRow["ID"] = id; ds.Tables["Table"].Rows.Add(objNewRow); // trying to update the table to add the image tempAP.Update(ds,"Table"); }.....................................
I recently developed a Java Application for a client with MySQL database. Now he wants to have ASP.NET website connected with the Java Application. I'm thinking of placing the database on a local server which would support both the desktop application and the website. What i want to know is, is it the good way to handle these kind of scenario or is there any standard method?
