troubleshooting a sql connection

Design and Implement a SQL Server Database

... Visual Basic 6.0 Authors AuthID First Name Last Name A1 John Brown A2 Matthew Bortniker A3 Rick Johnson A4 Peter Wright A5 James Moon AuthorBook BookID AuthID A1 A2 A3 A4 A5 A1 Ngoài điều quan ... "database" chọn "New Database" hình vẽ sau: Sau việc đánh tên database click OK Ngoài dùng SQL script để tạo database Khi ta phải rõ vị trí primary data file transaction log file Ví dụ: USE master ... ch a data table Ðầu tiên SQL Server dành Page Mixed Extent để ch a data cho table sau data tăng trưởng SQL dành hẳn Uniform Extent cho table Nguyên Tắc Hoạt Ðộng C a Transaction Log Trong SQL...

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Design and Implement a SQL Server Database

Danh mục: Kỹ thuật lập trình

... Visual Basic 6.0 Authors AuthID A1 A2 A3 A4 A5 First Name John Matthew Rick Peter James Last Name Brown Bortniker Johnson Wright Moon AuthorBook BookID 2 3 AuthID A1 A2 A3 A4 A5 A1 Ngoài điều quan ... "database" chọn "New Database" hình vẽ sau: Sau việc đánh tên database click OK Ngoài dùng SQL script để tạo database Khi ta phải rõ vị trí primary data file transaction log file Ví dụ: USE master ... ch a data table Ðầu tiên SQL Server dành Page Mixed Extent để ch a data cho table sau data tăng trưởng SQL dành hẳn Uniform Extent cho table 3.3 Nguyên Tắc Hoạt Ðộng C a Transaction Log Trong SQL...

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Specifying Locking Hints in a SQL Server Database

Danh mục: Kỹ thuật lập trình

... CommandBuilder SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); // Fill table using the DataAdapter DataTable dt = new DataTable( ); da.Fill(dt); // ... changing data being read by a user and preventing users from reading data being changed by a user Locks are acquired and released by user actions; they are managed internally by database software ... Start the transaction tran = conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder...

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Getting a SQL Server Query Plan

Danh mục: Kỹ thuật lập trình

... "ORDER BY CompanyName"; // Retrieve the plan into DataReader SqlDataReader dr = cmd.ExecuteReader( ); // Iterate over all result sets and all rows to get plan { while (dr.Read( )) sb.Append(dr.GetString(0) ... Execution category) is ON, SQL Server returns a result set containing detailed information about how the SQL statements are going to be executed rather than actually executing the statements Two ... The SQL SET statement alters current session handling of specific information Table 104 describes the categories of SET statements Table 10-4 SET statement categories Category Description Date and...

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Using a SqlConnection Object to Connect to a SQL Server Database phần 1

Danh mục: Kỹ thuật lập trình

... Console.WriteLine("mySqlConnection.Database = "+ mySqlConnection.Database); Console.WriteLine("mySqlConnection.DataSource = "+ mySqlConnection.DataSource); Console.WriteLine("mySqlConnection.PacketSize = "+ mySqlConnection.PacketSize); ... database */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection { public static void Main() { // formulate a string containing the details of the // database connection ... program is as follows: mySqlConnection.ConnectionString = server=localhost;database=Northwind;uid=sa; mySqlConnection.ConnectionTimeout = 15 mySqlConnection.Database = Northwind mySqlConnection.DataSource...

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Debugging a SQL Server Stored Procedure

Danh mục: Kỹ thuật lập trình

... rather than created, SQL debugging is not reestablished Changes to locals or parameter variables that are cached by the SQL interpreter are not automatically modified and there is no way to force ... established with the NET data provider for SQL Server before debugging a mixed-language application After that, you can open stored procedures and set breakpoints in the same way as for other applications ... the cache to refresh SQL Server caches variables when the execution plan determines that they will not be dynamically loaded for each statement execution or reference For more information about...

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Tài liệu Lab 3.1.7 Troubleshooting a Serial Interface doc

Danh mục: Quản trị mạng

... Paris interface as listed Configure the Paris router serial interface as follows: Paris(config)#interface serial Paris(config-if)#ip address 192.168.15.2 255.255.255.0 Paris(config-if)#clockrate ... the Paris router using the NO version of the command and then add it to the London router configuration Step Enter the command show interface serial on Paris Paris#show interface serial a Serial0 ... interface chart) on Paris Paris#show interface serial This will show the details of interface serial Answer the following questions: a Serial is _, line protocol is _ b Internet address...

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Tài liệu Lab 4.2.2 Establishing and Verifying a Telnet Connection pdf

Danh mục: Quản trị mạng

... session as performed in the Establishing a HyperTerminal session lab Note: Go to the erase and reload instructions at the end of this lab Perform those steps on all routers in this lab assignment ... Look at the interfaces on the remote router a Enter show interface at the router prompt b List the interfaces, their IP address and subnet masks: Interface IP Address Subnet mask Step Display the ... for a password, enter class If “class” does not work, ask the instructor for assistance Router>enable At the privileged EXEC mode, enter the command erase startup-config Router#erase startup-config...

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Tài liệu Lab 4.2.2 Establishing and Verifying a Telnet Connection pptx

Danh mục: Quản trị mạng

... Start a HyperTerminal session as performed in the Establishing a HyperTerminal session lab Note: Go to the erase and reload instructions at the end of this lab Perform those steps on all routers ... information that was generated by the remote access router Interface Is there a Carrier Detect signal Are the keepalive messages being received? Step Enter privileged exec mode 2-5 CCNA 2: Routers ... for a password, enter class If “class” does not work, ask the instructor for assistance Router>enable At the privileged exec mode enter the command erase startup-config Router#erase startup-config...

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Tài liệu Troubleshooting a Serial Interface doc

Danh mục: Quản trị mạng

... Paris interface as listed Configure the Paris router serial interface as follows: Paris(config)#interface serial Paris(config-if)#ip address 192.168.15.2 255.255.255.0 Paris(config-if)#clockrate ... the Paris router using the NO version of the command and then add it to the London router configuration Step Enter the command show interface serial on Paris Paris#show interface serial a Serial0 ... interface chart) on Paris Paris#show interface serial This will show the details of interface serial Answer the following questions: a Serial is _, line protocol is _ b Internet address...

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Tài liệu Using a SqlConnection Object to Connect to a SQL Server Database phần 2 doc

Danh mục: Kỹ thuật lập trình

... SqlInfoMessageEventHandler(InfoMessageHandler); // open mySqlConnection mySqlConnection.Open(); // create a SqlCommand object SqlCommand mySqlCommand = mySqlConnection.CreateCommand(); // run a PRINT statement ... = new SqlConnection("server=localhost;database=Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() method mySqlConnection.StateChange += new StateChangeEventHandler(StateChangeHandler); ... state of the connection to the database The State property returns a constant from the ConnectionState enumeration Note An enumeration is a list of numeric constants, each of which has a name...

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Tài liệu Specifying Locking Hints in a SQL Server Database doc

Danh mục: Quản trị mạng

... CommandBuilder SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); // Fill table using the DataAdapter DataTable dt = new DataTable( ); da.Fill(dt); // ... changing data being read by a user and preventing users from reading data being changed by a user Locks are acquired and released by user actions; they are managed internally by database software ... Start the transaction tran = conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder...

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Tài liệu Executing a SQL Server Stored Procedure By Using ActiveX Data Objects doc

Danh mục: Cơ sở dữ liệu

... cmd.CreateParameter("CustomerID", ADODB.DataTypeEnum.adChar, ADODB.ParameterDirectionEnum.adParamInput, 5) cmd.Parameters.Append(prm) prm.Value = "CHOPS" OpenNorthwindADOConnection(cnn) cmd.ActiveConnection ... txtResults.Text = rstCurr.GetString Catch excp As Exception MessageBox.Show(excp.Message) End Try End Sub The last thing that this routine does is open a recordset based on the Command object This is to the ... Execute method To see the routine in A. 8 executed, click on the button with the caption Stored Procedure with Parameter, located on the frmMain form for this Appendix project ...

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Tài liệu Use Wildcards and Ranges of Values in a SQL Query pdf

Danh mục: Cơ sở dữ liệu

... build the data adapter and fill the data table Dim odaResults As New OleDb.OleDbDataAdapter(Me.lblSQLString.Text, BuildCnnStr("(local)", "Northwind")) Dim dtResults As New DataTable() Try odaResults.Fill(dtResults) ... statement, this routine assigns it to the Text property of lblSQLString Then the string is used in a data adapter that was created to fill the dtResults data table Last, the data table is set as ... a single character For instance, if you type _ake, then you would get four-letters words, such as lake, bake, and sake [] (Square brackets) This is a range or group of characters to compare against...

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Tài liệu Lab 5.2.7 Establishing a Console Connection to a Router or Switch docx

Danh mục: Quản trị mạng

... HyperTerminal program: Start > Programs > Accessories > Communications > Hyper Terminal Step Name the HyperTerminal Session At the Connection Description” popup enter a name in the connection Name ... Finally, attach the adapter to a PC serial port, either DB-9 or DB-25, depending on the computer Step Start the PC HyperTerminal program a Turn on the computer b From the Windows taskbar, locate the ... serial interface on the PC or dumb terminal is a DB-25, an RJ-45 to DB-25 adapter will be needed Both of these adapters typically come with a Cisco router or switch Step Locate or build a rollover...

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Tài liệu Troubleshooting a NIC Using the Ping Command doc

Danh mục: Hệ điều hành

... important that a technician try to save as much time as possible Ping is a great utility to begin troubleshooting a problem Ping will help a technician determine whether the network problem is related ... time, and TTL the same as last time? If not, what has changed? Step If the technician can successfully ping the PC address, and the loopback, then the NIC and ... Internet Instead, the loopback is an address that pings the NIC installed in the workstation you are currently using Type the command ping 127.0.0.1 Did you receive a reply back? Are the values for...

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Tài liệu Performing a SQL SELECT Statement and Storing the Rows Locally phần 1 docx

Danh mục: Kỹ thuật lập trình

... example creates a SqlDataAdapter object named mySqlDataAdapter: SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); Step 7: Set the SelectCommand Property of the SqlAdapter Object to the SqlCommand ... selectString; Step 6: Create a SqlDataAdapter Object You use a SqlDataAdapter object to move information between your DataSet object and the database You'll see how to create a DataSet object in step ... connect to a SQL Server database The following example creates a SqlConnection object named mySqlConnection, passing connectionString (created in step 1) to the constructor: SqlConnection mySqlConnection...

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Tài liệu Performing a SQL SELECT Statement and Storing the Rows Locally phần 2 docx

Danh mục: Kỹ thuật lập trình

... SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); // step 7: set the SelectCommand property of the SqlAdapter object // to the SqlCommand object mySqlDataAdapter.SelectCommand = mySqlCommand; // ... Display the columns for each row in the DataTable, using a DataRow object to access each row in the DataTable The DataTable class defines a property named Rows that returns a DataRowCollection ... the DataTable object from the DataSet object DataTable myDataTable = myDataSet.Tables["Customers"]; // step 13: display the columns for each row in the DataTable, // using a DataRow object to access...

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Tài liệu Determining the Length of Columns in a SQL Server Table doc

Danh mục: Kỹ thuật lập trình

... // Create the connection SqlConnection conn = new SqlConnection( ConfigurationSettings.AppSettings[ "Sql_ ConnectString"]); // Create DataAdapter SqlDataAdapter da = new SqlDataAdapter(sqlText, ... // Add table mappings da.TableMappings.Add("Table", "Orders"); da.TableMappings.Add("Table1", "Order Details"); // Create the DataSet DataSet ds = new DataSet( ); // Fill the schema and data da.FillSchema(ds, ... DataReader also returns all column lengths The method returns a DataTable containing column metadata for a DataReader, where the ColumnSize column contains the lengths For more information about...

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Tài liệu Module 11: Troubleshooting a Network Load Balancing Cluster doc

Danh mục: Quản trị mạng

... time, store data in a database, and query the data to report on and analyze the data as needed for overall performance assessment, trend analysis, and capacity planning The following table shows ... install the Network Load Balancing parser into Network Monitor, the heartbeat traffic will not be parsed and displayed The heartbeat traffic will be available for display only as binary data Install ... Errors Datagrams Outbound No Route Connections Established Datagrams Received/sec Datagrams Received Address Err Connections Passive Datagrams Sent/sec Datagrams Received Delivered/Sec Connections...

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