Steps:
Check whether the IP address of the ping server can be pinged.
This is actually to see and remote SQL server
2000 check whether the physical connection of the server exists. If not, check the network and check the configuration. Make sure that the IP address of the Remote SQL server 2000 server is correctly spelled.
2. Enter the IP port of the telnet server in Dos or command line to check whether the port can be connected.
For example, telnet 202.114.100.100
1433
Generally, the port value is 1433, because 1433 is SQL server.
The default listening port of 2000 for TCP/IP. If there is a problem, this step usually has a problem. The common prompt is "... Unable to open the connection, connection failed ".
If there is a problem with this step, check the following options.
1. Check whether the remote server has started the SQL server 2000 Service. If not, start.
2
Check whether the TCP/IP protocol is enabled on the server, because remote connection (via the Internet) depends on this protocol. The check method is to open the Start menu on the server-> Program-> Microsoft
SQL Server-> Server network utility to check whether the enabled Protocol has the TCP/IP protocol. If not, enable it.
3
Check whether the TCP/IP Port of the server is configured as port 1433. Check the TCP/IP attribute in the enabled protocol in the server network utility to make sure that the default port is 1433 and the check box of the hidden server is not checked.
In fact, it is acceptable if the default port is modified. However, when the client performs a telnet test, the server port number must be consistent with the port number configured on the server. If the "Hide server" check box is selected, it means that the client cannot see this server by enumerating the server, which protects the server but does not affect the connection, however, the default port of TCP/IP protocol is implicitly modified to 2433, which must be changed when the client is connected.
4
If the operating system on the server has been patched with sp2, you must configure windows Firewall and open port 1433 to it, you can usually turn off the windows Firewall directly during testing (Other firewalls are also the best ).
5
Check if the server listens on port 1433. If the server does not listen on port 1433 of the tcp connection, it cannot be connected. The check method is to input
Netstat-a-n or netstat-an. Check whether tcp 127.0.0.1 1433 listening is available in the result list.
. If not, you usually need to patch SQL server 2000 with at least sp3. Click the address below to download:
Bytes
In fact, start the query analyzer on the server side and enter
After executing select @ version, you can see the version number. All Versions earlier than 8.0.2039 must be patched.
If there is no problem, telnet again.
The server ip 1433 test will show that the cursor keeps flashing in the upper left corner after the screen flashes. Congratulations, you can start to connect to the Enterprise Manager or query analyzer immediately.
3. Check client settings
Program> Microsoft SQL Server>
Client Network Tools. Make sure that the client TCP/IP protocol is enabled, as in the server network utility, and the default port is 1433 (or other ports, consistent with the server ).
4. In the Enterprise Manager or query the analyzer connection test
Enterprise Manager-> right-click SQlserver group-> Create sqlserver registration-> next-> Write Remote IP-> next->
Choose Sqlserver login-> next-> write login name and password (sa, password)-> next-> complete
Query analyzer-> file-> connection-> Write Remote IP-> write login name and password (sa, password)-> OK
It is usually recommended to do this in the query analyzer, because by default, the timeout setting for registering another SQL Server through the Enterprise Manager is 4 seconds, and the query analyzer is 15 seconds.
Modify the default connection timeout method:
Enterprise Manager> Tools> Options> SQL
In the "Server Enterprise Manager properties" window, click the "advanced" tab-> connection settings-> enter a large number in the box after logon timeout (seconds)
Query analyzer-> tool-> Option-> connection-> enter a large number in the box after logon timeout (seconds)
Generally, you can connect to IOT platform. If an error is prompted, proceed to the next step.
Five error occurs because SQL Server uses the "Windows only" authentication method, so you cannot use the Logon account of SQL Server (such as sa)
. The solution is as follows:
1. Use the enterprise manager on the Server side and select "use Windows Authentication" to connect to SQL Server.
2
Expand "SQL Server group", right-click the name of the SQL Server, select "properties", and then select the "Security" tab.
3. Under "authentication", select "SQL
Server and Windows ".
4. Restart the SQL Server service. (In dos or command line, net stop mssqlserver to stop the service, net
Start mssqlserver to start the service, which is also a quick method ).
Note: When connecting to the local server, the named pipe protocol is usually used (this is enabled in the server network utility). The default port is 445, therefore, local connectivity cannot be explained. connecting to a remote server is a completely different protocol)