Hi! I did an importer in VB .Net witch get data from an SQLServer an inserts this data throught ADSL connection in a remote MySQL server. in the first time, it was like 200 records, but now there are more than 500.000 records and it expends like 11hours exporting all the data and that is bad, veryyy bad. I need to optimize my importer, witch now gets the data into a datatable an them i have a function witch with a loop (row to row) inserts the data with a "insert into" query... like this: For Each dr As DataRow In dt.Rows Console.Write(".") Dim sql As String = "INSERT INTO clientes(id,nombrefis,nombrecom,direccion,codpos,municipio_id,telefono,fax,cif)" & _ "VALUES (@id,@nombrefis,@nombrecom,@direccion,@codpos,@municipio_id,@telefono,@fax,@cif)" cmd = New MySqlCommand(sql, cnn) cmd.Parameters.AddWithValue("id", Int32.Parse(dr("ID EMPRESA").ToString)) cmd.Parameters.AddWithValue("nombrefis", dr("NOMEMP")) cmd.Parameters.AddWithValue("nombrecom", dr("EMPRESA")) cmd.Parameters.AddWithValue("direccion", dr("DIRECC")) cmd.Parameters.AddWithValue("codpos", dr("CODPOS")) cmd.Parameters.AddWithValue("municipio_id", Int32.Parse(dr("CODIGO MUNICIPIO")).ToString) cmd.Parameters.AddWithValue("telefono", dr("TELEF")) cmd.Parameters.AddWithValue("fax", dr("FAX")) cmd.Parameters.AddWithValue("cif", dr("CIF")) cmd.ExecuteNonQuery() Next any ideas or advices? thanks so much