A very mysterious problem coming up :P
I have a server configured with a static IP. I have installed SQL Server 2008 R2 with additional instance (ITAPP). Now When I use the IP to access the SQL Server following things happens:
Client Machine:
sqlcmd -S XXX.XXX.XXX.XXX -U sa -P mypass
Connected Successfully....
But when I use:
sqlcmd -S XXX.XXX.XXX.XXX\ITAPP -U sa -P mypass
HResult 0xFFFFFFFF, Level 16, State 1 SQL Network Interfaces: Error
Locating Server/Instance Specified [xFFFFFFFF].
Sqlcmd: Error: Microsoft SQL Native Client : An error has occurred
while establishing a connection to the server.
When connecting to SQL Server 2005, this failure may be caused by the
fact that under the default settings SQL Server does not allow remote
connections..
Sqlcmd: Error: Microsoft SQL Native Client : Login timeout expired.
Even on the same machine (where the SQL Server is installed) using SQL Server Management Studio. I have put off my firewall on both machines, even allow all the protocols for ITAPP (Shared Memory, Named Pipes, TCP/IP), also set Allow Remote connection to true.
One thing more when I use 127.0.0.1\SQLITRAX to connect on server machine it connects Immediately.
Please help me out from this mess :)
maybe it's because it's a named instance on a remote server.
Named instance don't use the SQL Server standard Tcp-port 1433, only the default (unnamed) instance use the 1433 port.
Any other "named" instance simply listen on another port.
So you should check in the SQL-Server configurator, on which TCP port is listening, and then tell the client to connect to this port.
Say that your named instance is listening to 12345 port, then the client should connect using the following command
sqlcmd -S XXX.XXX.XXX.XXX,12345 -U sa -P mypass
when you specify the TCP port, then you don't need the name of the instance.
In my understanding the name of the instance is a way for SQL Server services to find the TCP port that this named instance is listening on.
But for this to work your client need to be able to access those other services that resolve the instance name of SQL Server (maybe it's the Sql server Agent / SQL Server browser, but I'm not sure)
Update
Here is a screenshot that show where to set the TPC port for a SQL Server named instance.
so, on which TCP port is your named instance of SQL Server listening?
The SQL Server Browser service needs to be accessible to be able to connect to named instances.
See this article for more info on what it does and which ports to open on your firewall
This technet article provides a handy script to open up all required ports
Related
We cannot access from a client computer (Client) to a SQL Server computer (Server) on network A but successfully on another B. The Server computer has SQL Server 2019 installed, the Client computer has SQL Native Client 11.0 installed. We can connect from this client to the server in on network A either using sqlcmd, udl interface, or Telnet. But on a different network B, we cannot connect from the same Client to the same Server! What network configuration can avoid a SQL Server connection?
Server Parameters:
1. We defined firewall rules to allow inbound connection on ports 1433 for TCP and 1434 for UDP. We verified that that is the case on the Server by using "netstat -aon". We disabled the Norton Smart Firewall.
2. We have set this rule to apply to all profiles: Domain, Public, Private.
3. We ensured that all protocols for SQLEXPRESS are allowed and enabld in the SQL Server Configuration Manager, specifically TCP/IP.
4. We have enabled SQL Server Browser.
5. We have restarted all services multiple times after our configuration changes. We have even restarted the machine.
6. We made sure that the Server is accessible remotely and using SQL Server Authentication.
7. We reset both the modem and the router for both Networks before testing.
8. We confirmed both the Computer and the SQL Instance names in the SMSS logins and logs.
Tests we did on Network A:
1. We can ping the Client from the Server, the Server from the Client both with IP addresses and computer names (On Server: "ping -a ClientIP/ComputerName", On Client: "ping -a ServerIP/ComputerName". Both results with "Reply...").
2. We can access the database in the Server using SSMS both with Windows Authentication and SQL Server Authentication.
3. We cannot access to Server from the Client by Windows Authentication either by using "sqlcmd -S Server\sqlexpress -E".
4. We cannot access to Server from the Client by SQL Server Authentication by using "sqlcmd -U User -P Password -S Server\SQLExpress".
On the other hand, when these computers are in Network B, without changing anything we can connect to Server from the Client.
Here are the error messages we get:
sqlcmd -U User -P Password -S Server\SQLExpress
By default named instances use dynamic ports, which you're not allowing through the firewall.
The best solution is probably to simply configure the SQL Server instance to listen on the fixed port 1433, then you don't need to use an Instance Name or explicit port to connect.
To do this us SQL Server Configuration Manager to configure the instance to listen on port 1433 on all IPs. It should look like this:
With Dynamic Ports blank, and 1433 in the TCP IP port.
Then restart the SQL Server instance and in the SQL Server Logs you should see a message like
Server is listening on [ 'any' <ipv4> 1433].
Then try to connect like
sqlcmd -U User -P Password -S Server
And you can test with Powershell
PS C:\> test-netconnection Server -port 1433
If you do this you won't need the SQL Browser Service or the firewall rule for port 1434.
I'm trying to connect new host in SQL Server using IP address, but I got some trouble when I'm trying to log in SSMS 2017. I'm still relatively newbie about using SQL Server. Here's the error message:
when I'm trying to login:
And here when I check SQLCMD
I've been trying:
1. Restart Service SQL Server
2. Enable all Protocols for MSSQLSERVER (include TCP/IP and Named Pipes)
3. Allow remote connections
4. Enable SQL Server Browser
Check your SQL Server log to ensure that it's listening on the IP address(es) you expect. You should see an entry during startup like:
Server is listening on [ 'any' <ipv4> 1433].
Evening all,
We have been tasked to connect to our named server instance using SQLCMD below:
- Use SQLCMD to test connecting to the (named instance) TCP/IP listener
on TCP port 1433. Use the 127.0.0.1 loopback address to simulate the
network.
I have tried just about every method of connecting I can think of including the following basic scripts:
sqlcmd -S tcp:MyComputerName,1433
sqlcmd -S tcp:127.0.0.1,1433
sqlcmd.exe -S tcp:MyComputerName,1433 -Q "select getdate()"
This is the error I continually get:
Sqlcmd: Error: Microsoft SQL Server Native Client 11.0 : Login timeout expired.
Sqlcmd: Error: Microsoft SQL Server Native Client 11.0: A network-related or instance-specific error has occured while establishing a connection to SQL Server. Server is not found or not accessible. Check if instance name is correct and if SQL Server is configured to allow remote connections.
I went through all the troubleshooting methods to ensure my Firewall accepts port 1433. I ensured Remote Connections could be accepted using the SQL Server Management Tool. TCP/IP protocol is enabled under all three areas of the Network Configuration Tool. The ports are 1433 in each protocol.
I am utterly confused.
I will say that there is one script I do get a positive connection via tcp and that is the following:
sqlcmd -S tcp:MyComputerName\SQLSERVERNAME
I end up with 1> to let me know the connection was good.
After researching this for quite some time I have turned to posting as I have been unable to troubleshoot a solution.
Thoughts?
edit
Just got this error for the first time:
Sqlcmd: Error: Microsoft SQL Server Native Client 11.0: TCP Provider: No connection could be made because the target machine actively refused it.
I just ran into this problem too, right after a bran new installation of SQL-Server 2008r2 Developer on a Windows 10.
As Tim3890 pointed out, The issue was just that TCP/IP was not enable for the local SQL server.
see: https://dba.stackexchange.com/questions/62165/i-cant-connect-to-my-servers-sql-database-via-an-ip-address
Initial Attempt
I have an Azure VM with Windows Server 2012, on which I just installed SQL Server 2012 Express Database Engine component. Then, I followed the instructions here to connect remotely with SQL Server Management Studio.
Create a TCP endpoint for the virtual machine
Open TCP ports in the Windows firewall
Configure SQL Server to listen on the TCP protocol
Configure SQL Server for mixed mode authentication
Create SQL Server authentication logins
Determine the DNS name of the virtual machine
Connect to the Database Engine from another computer
After step seven I received the following error:
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: Named
Pipes Provider, error: 40 - Could not open a connection to SQL Server)
(Microsoft SQL Server, Error: 53)
What else do I need to configure before connecting remotely?
Troubleshooting
I have been following the troubleshooting instructions here. Each blockquote below is a step described that that link.
Confirm the instance of the SQL Server Database Engine is installed
and running.
Done. We installed SQL Server Express, and it is running as a named instance called SQLEXPRESS.
If you are attempting to connect to a named instance, make sure the
SQL Server Browser service is running.
Done. We followed the steps here to turn on the SQL Server Browser service.
Get the IP Address of the computer.
Done. We will use these later for testing connectivity and maybe for setting up a static port for SQLEXPRESS.
10.241.62.155
fe80::45c:8c29:e19f:f78b%15
Get the TCP port number used by SQL Server.
Done. The SQL Server Management Studio server logs showed that the server was listening on port 49169.
Enable Protocols
Done. We had already enabled TCP/IP in the configuration manager, but we restarted the SQL Server Service just in case.
Testing TCP/IP Connectivity
Done. We used tcping.exe to test connectivity (cmd ping doesn't work quickly with Azure.) We were able to connect to port 80.
tcping.exe buddha.cloudapp.net > successful
tcping.exe buddha.cloudapp.net 80 > successful
Testing a Local Connection
Done. We used sqlcmd.exe from the command prompt and were able to connect locally via TCP with a username and password.
sqlcmd -S Buddha\SQLEXPRESS (success via shared memory protocol)
sqlcmd -S tcp:Buddha\SQLEXPRESS (success via TCP)
sqlcmd -S tcp:Buddha\SQLEXPRESS -U sa -P (success via TCP with username)
sqlcmd -S tcp:10.241.62.155\SQLEXPRESS -U sa -P (success with internal IP)
Opening a Port in the Firewall
We opened the port on which we SQLEXPRESS listens. The server logs (above) showed that SQLEXPRESS was listening on port 49169, but this is just one of many dynamic ports, and we wanted to set up the static port 1435.
Use WF.msc to create an inbound TCP rule for port 1435.
Use Azure Management Portal to create a TCP endpoint for port 1435.
The troubleshooting instructions also say:
If you are connecting to a named instance or a port other than TCP
port 1433, you must also open the UDP port 1434 for the SQL Server
Browser service.
Since we are connecting SQLEXPRESS (a named instance), we needed to open port 1434 for UDP.
Use WF.msc to create an inbound UCP rule for port 1434.
Use Azure Management Portal to create a UDP endpoint for port 1434
Further research about connecting to named instances revealed dynamic port issues. The reason why we are using port 1435 (static) instead of port 49169 (one of many effective options.)
Instances of SQL Server Express, SQL Server Compact, and named
instances of the Database Engine use dynamic ports. To configure these
instances to use a specific port, see Configure a Server to Listen on
a Specific TCP Port (SQL Server Configuration Manager). and
here.
Done. We went to SQL Configuration Manager > SQL Server Network Configuration > Protocols for SQLEXPRESS > TCP/IP, we did the following.
Protocol Tab > Listen All > NO.
IP Addresses Tab > for each listed address
Enabled > Yes
TCP Dynamic Ports > Blank (delete the zero)
TCP Port > 1435 (or your choice)
After restarting the SQLEXPRESS service, we again looked in the SQL Server Management Studio logs, and found that the Server is Listening on port 1435!!! Hooray!
Testing the Connection
Done. We opened SQL Server Management Studio on our local (non-Azure) computer and connected.
buddha.cloudapp.net,1435 OR buddha.cloudapp.net\SQLEXPRESS
sa
password
Success.
Here are the three web pages on which we found the answer. The most difficult part was setting up static ports for SQLEXPRESS.
Provisioning a SQL Server Virtual Machine on Windows Azure. These initial instructions provided 25% of the answer.
How to Troubleshoot Connecting to the SQL Server Database Engine. Reading this carefully provided another 50% of the answer.
How to configure SQL server to listen on different ports on different IP addresses?. This enabled setting up static ports for named instances (eg SQLEXPRESS.) It took us the final 25% of the way to the answer.
The fact that you're getting an error from the Names Pipes Provider tells us that you're not using the TCP/IP protocol when you're trying to establish the connection. Try adding the "tcp" prefix and specifying the port number:
tcp:name.cloudapp.net,1433
I too struggled with something similar. My guess is your actual problem is connecting to a SQL Express instance running on a different machine. The steps to do this can be summarized as follows:
Ensure SQL Express is configured for SQL Authentication as well as Windows Authentication (the default). You do this via SQL Server Management Studio (SSMS) Server Properties/Security
In SSMS create a new login called "sqlUser", say, with a suitable password, "sql", say. Ensure this new login is set for SQL Authentication, not Windows Authentication. SSMS Server Security/Logins/Properties/General. Also ensure "Enforce password policy" is unchecked
Under Properties/Server Roles ensure this new user has the "sysadmin" role
In SQL Server Configuration Manager SSCM (search for SQLServerManagerxx.msc file in Windows\SysWOW64 if you can't find SSCM) under SQL Server Network Configuration/Protocols for SQLExpress make sure TCP/IP is enabled. You can disable Named Pipes if you want
Right-click protocol TCP/IP and on the IPAddresses tab, ensure every one of the IP addresses is set to Enabled Yes, and TCP Port 1433 (this is the default port for SQL Server)
In Windows Firewall (WF.msc) create two new Inbound Rules - one for SQL Server and another for SQL Browser Service. For SQL Server you need to open TCP Port 1433 (if you are using the default port for SQL Server) and very importantly for the SQL Browser Service you need to open UDP Port 1434. Name these two rules suitably in your firewall
Stop and restart the SQL Server Service using either SSCM or the Services.msc snap-in
In the Services.msc snap-in make sure SQL Browser Service Startup Type is Automatic and then start this service
At this point you should be able to connect remotely, using SQL Authentication, user "sqlUser" password "sql" to the SQL Express instance configured as above. A final tip and easy way to check this out is to create an empty text file with the .UDL extension, say "Test.UDL" on your desktop. Double-clicking to edit this file invokes the Microsoft Data Link Properties dialog with which you can quickly test your remote SQL connection
I need to connect to remote SQL Server by an ip address with a port.
But when I ping to the ip address then that reply as well. But when I try to establish the connection that failed.
I tried with Management Studio and with command prompt too.
My command was:
sqlcmd -S [IP],[port] -U [user] -P [password]
The error report as follows :
HResult 0x274C, Level 16, State 1
TCP Provider: A connection attempt failed because the connected party did not
properly respond after a period of time, or established connection failed because
connected host has failed to respond.
Sqlcmd: Error: Microsoft SQL Server Native Client 10.0 : A network-related or
instance-specific error has occurred while establishing a connection to SQL Server.
Server is not found or not accessible. Check if instance name is correct and if
SQL Server is configured to allow remote connections. For more information see
SQL Server Books Online..
Sqlcmd: Error: Microsoft SQL Server Native Client 10.0 : Login timeout expired.
I would like to know that
is there any missing steps from my client side for which I am unable to establish the connection?
or this is the matter of server configuration (Allowing remote connection)
It looks like you are actually missing the database name you would like to connect to:
EX: sqlcmd -S [IP],[port]\[DBNAME] -U [user] -P [password]
In addition to configuring the Windows Firewall to allow incoming connections on TCP Port 1433, you will need to start the SQL Server Browser service. This service can be found on the Start Menu - Microsoft SQL Server 2008 R2 - Configuration Tools - SQL Server Configuration Manager. Once there, click SQL Server Services on the left, then SQL Server Browser on the right. This is disabled by default.
Right click SQL Server Browser and choose Properties
Click the Service Tab
For property Start Mode, choose Automatic
Click Apply
Click the Log On tab
Choose the appropriate account for log on (I used built in service account)
Click Apply
Click Start
Click OK
This solved my problem on Windows Server 2008 R2 with SQL Server 2008 R2 Express Edition.
Check the firewall settings on the server that is actively hosting the database. By default, Windows Server will block all remote connections to the Database Server.