A named pipe is a named, one-way or duplex pipe for communication between the pipe server and one or more pipe clients. All instances of a named pipe share the same pipe name, but each instance has its own buffers and handles, and provides a separate conduit for client/server communication.
Named pipes is a windows system for inter-process communication. In the case of SQL server, if the server is on the same machine as the client, then it is possible to use named pipes to tranfer the data, as opposed to TCP/IP.
Named pipes are also a networking protocol in the Server Message Block (SMB) suite, based on the use of a special inter-process communication (IPC) share. SMB's IPC can seamlessly and transparently pass the authentication context of the user across to Named Pipes.
1. Open SQL Configuration Manager (Start > Programs > Microsoft SQL Server> Configuration Tools > SQL Configuration Manager. 2. Click "SQL Server Network Configuration" Note* Not the 32bit version, unless your system is 32bit.
Take the following steps to access the SQL Server Configuration Manager via Computer Manager:
- Click the Windows key + R to open the Run window.
- Type compmgmt. msc in the Open: box.
- Click OK.
- Expand Services and Applications.
- Expand SQL Server Configuration Manager.
Solution
- Open SQL Server Configuration Manager.
- Go to Protocol…
- Disable VIA protocol.
Configure SQL Server machine
- Windows Firewall ->Advanced Settings->Inbound Rules.
- Run SSMS (SQL Server Management Studio) on SQL Server machine.
- Server Properties - > Connections -> Allow Remote Connections ..”
- Add a SQL login (if not already there)
- Enable SQL Service to listen on TCP/IP.
- Restart SQL Server Service.
A Virtual Interface Adapter ("VIA") is a network protocol (such as TCP/IP ). As of July 2006 Microsoft SQL Server 2005 supports it. The specific implementation of VIA will vary from vendor to vendor. The VIA protocol is deprecated by Microsoft, and will be removed in a future version of Microsoft SQL Server.
If the protocols are disabled, then follow the below procedure to enable& check if it works.
- Stop the agent.
- Open the SQL Server Configuration Manager >> SQL Server NetworkConfiguration >> Protocols for MSSQLSERVER >> Right click "TCP/IP" &select "Enable" >> Right click "Named Pipes" & select "Enable"
- Open the SQL Configuration Manager.
- Enable TCPIP and Named Pipes.
- Restart the SQL service.
- Make sure the SQL Server Browser is running, if it is disabled you cannot connect even if you have allowed connections in SQL.
When we try to connect to the SQL Server, many times we get an Error as Provider: Named Pipes Provider, Error: 40 – could not open a connection to SQL server. Reasons for getting this error are: This is due to failure in connecting to the server instance we are using. The wrong default settings.
The error number is 53, which means Network Path is not Found, try to ping the server, check Server Name in your Linked Server DDL script, Also check for Windows Firewall settings.
SQL Server Shared Memory protocol is used by clients to connect to the SQL Server instance that is running on the same machine. SQL Server Shared Memory protocol is the simplest protocol, as it has no configurable settings to be tuned in order to use it.
TCP/IP stands for Transmission Control Protocol/Internet Protocol. TCP/IP is a set of standardized rules that allow computers to communicate on a network such as the internet.
Enable remote connections to your SQL Server.
- Open SQL Server Management Studio.
- Right-click your server's name and select Properties.
- Tick the checkbox Allow remote connections to this server.
- Select OK.
Connect to a SQL Server instance
- Start SQL Server Management Studio. The first time you run SSMS, the Connect to Server window opens.
- In the Connect to Server window, follow the list below: For Server type, select Database Engine (usually the default option).
- After you've completed all the fields, select Connect.
To connect using TCP/IP
- Connect using the following general syntax: sqlcmd -S tcp:<computer name>,<port number>
- Connect to the default instance: sqlcmd -S tcp:ComputerA,1433 sqlcmd -S tcp:127.0.0.1,1433.
- Connect to a named instance: sqlcmd -S tcp:ComputerA,1691 sqlcmd -S tcp:127.0.0.1,1691.
Make sure Hostname and Port are correct
- Select Tools > Database > Database Configuration… in the VP application.
- Select the Language, Server, Version and the Driver in Database Configuration dialog.
- Enter Hostname, which must be either the IP address of your computer, a mapped host name or the computer name.
The sqlcmd utility is a command-line utility for ad hoc, interactive execution of Transact-SQL statements and scripts and for automating Transact-SQL scripting tasks. To use sqlcmd interactively, or to build script files to be run using sqlcmd, users must understand Transact-SQL.
SQL Location: Server Name or IP - If it is a local machine the server name will be (local) or localhost for the default instance, or if a named instance such as SQL Express it would be localhostSQLExpress. If you are unsure, copy the value from the "Server name:" TextBox when connecting through SQL Management Studio.
It is the most common method to find the SQL Server Port number.
- Open SQL Server Configuration Manager from the start menu.
- Go to Network Configuration, click the SQL instance for which you want to check SQL port.
- It opens the protocols list.
- Click on IP Addresses and scroll down to IPAll group.
In SQL Server Configuration Manager, expand SQL Server Network Configuration and then select Protocols for <instance name> on the left panel. To identify the TCP/IP Port used by the SQL Server Instance, right click on TCP/IP and select Properties from the drop down as shown below.
Easy SolutionDouble Click on TCP/IP and go to IP Adresses Tap and Put port 1433 under TCP port. The error is self explanatory: Check if your SQL server is actually up and running. Check there's no firewall rule blocking TCP connection to port 1433.
Click on Start button and choose Settings.
- Choose Network & Internet.
- Click on Ethernet → Change adapter options.
- Click Internet Protocol Version 4 (TCP/IPv4), and then click Properties.
- Click Internet Protocol Version 6 (TCP/IPv6), and then click Properties.
Enable TCP/IP via SQL Server Configuration Manager
- Click Start, Programs, Microsoft SQL Server 20xx and select SQL Server Configuration Manager. (
- Select SQL Server Network Configuration.
- Double click on Protocols for SQLEXPRESS.
- If not enabled already, right click TCP/IP and choose “Enable”. (
- Click OK.
To enable a server network protocol
- In SQL Server Configuration Manager, in the console pane, expand SQL Server Network Configuration.
- In the console pane, click Protocols for <instance name>.
- In the details pane, right-click the protocol you want to change, and then click Enable or Disable.
TCP is the main protocol by which clients communicate with SQL Server.
