I am having issues to connect to a database from a C++ program (VS 2008).
I have created the database using SQL Server and both SQL Server and SQL Server Browser are running, TCP/IP and Remote Access are enabled.
I can connect to my database using sqlcmd, but when I use:
System::Data::SqlClient::SqlConnection ^_SqlConnection = gcnew System::Data::SqlClient::SqlConnection();
_SqlConnection->ConnectionString = "Data Source=MyComp\SQLEXPRESS; Initial Catalog=DbName; Integrated Security=True";
_SqlConnection->Open();
I get the classic error
Named Pipes Provider, error: 40 - Could not open a connection to SQL Server
I have copied the connection string from the database properties found in the Server Explorer of VS, so I guess it's correct.
Thanks a lot for any help.
Found the solution. Correct syntax for connection string is:
"Data Source=MyComp\\SQLEXPRESS; Initial Catalog=DbName; Integrated Security=True";
With 2 back-slashes \\ in the server name.
Related
I'm trying for the first time to get my project to run in Visual Studio Code. This includes a MySQL database. So I've installed the SQL Server (mssql) extension version 1.7.1. I follow the instructions here: https://learn.microsoft.com/en-us/sql/visual-studio-code/sql-server-develop-use-vscode?view=sql-server-ver15
I get to the section "Connect to SQL Server" and enter:
servername: localhost
db name: c3
Authentication type: Integrated
At the end of the section it should connect with the server but instead I get two errors:
mssql: Error "Unable to connect using the connection information
provided. Retry profile creation?"
mssql: Error 2: 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)
Does anyone see what is going wrong here?
I've re-installed the extension but with the same result.
A MySQL db and Microsoft SQL Server db are two different things.
It seems that there's no SQL Server installed? You might install the free SQL Server Express Version, create the database in there and then connect from Visual Studio Code.
You have to install the database server yourself as VS Code is just a client. You might also use somekind of hosted offers (many webhosters offer a mysql server with self service installation, or use a cloud based database server). Yout can also use a local database (e.g. SqlLite) which is file based and doesn't need a special installation.
You should do the following
install SQL server in your machine and create Database here
Create a login and a database user here
If you are Using VS code install SQL Server (mssql) open new
connection, follow the prompts to specify the properties for the new
connection profile
If you want to login to your server to make sure of your data
sqlcmd -S localhost -U SA -P '<YourPassword>'
I had SQl Sever 2008 R2 Express on my production server and i upgraded it to SQl Server 2008 Web Edition. Even since i upgraded my websites do not get connected to database. I was wondering what should be changing to connect to the databases. This is a Website in VS 2008.
This is the part of the code where i have the connection string.
connstring = "Data Source=198.57.59.70;Initial Catalog=Tracking;Integrated Security=SSPI;";
I get the error when connecting to database as "System.Data.SqlClient.SqlException: 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."
Can someone suggest where i am doing wrong, Please!!
Thank you in advance!
I have a server that has SQL Server 2008 R2 installed but my application uses SQL Express 2008 R2 - do I need to install SQL Express as well? The error Im currently getting is:
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: SQL
Network Interfaces, error: 26 - Error Locating Server/Instance
Specified)
You can create your database the SQL Server and connect with the correct connection string. You can not attach your Database files like in SQL Server express though.
There is no need to install SQL Server Express.
A common connection string to connect to SQL Server is:
Data Source=yourServer;Initial Catalog=yourDatabase;Integrated Security=SSPI;
Replace yourServer with the servername (in the form of Server\instance) and yourDatabase with the name of the database you wish to connect to.
The following connection string for SQL Server Express does not work on a standard SQL Server:
Server=yourServer;AttachDbFilename=c:\data\yourDatabase.mdf;Database=yourDatabase; Trusted_Connection=Yes;
I have create a SQL Azure database on the Azure portal, now I want to connect to it using SQL Server Management Studio. I've set my properties like this:
Server Type:Database Engine:
Server Name:[mycred].database.windows.net
Authentification: SQL Server Authentification
username: myusername
password: mypassword
But when I try to connecting with these properties I get an 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)
Whereas I have configure firewall on my SQL Azure database. How to solve this issue?
Your request has not left your machine that's why it is returning network error. There could be several issues and first start with SQL Server Management Studio. You must have SSMS R2 2008. Any non R2 version will not work.
Here is a list of test you would need to perform to troubleshoot the problem and apply solution:
http://social.technet.microsoft.com/wiki/contents/articles/sql-azure-connectivity-troubleshooting-guide.aspx
I'm trying to call a sproc from EntLib (MVC3, EntLib5, SQL Server 2008). I'm using the default instance of SQL Server and can connect to it just fine from SQL Server Management Studio. I've tried everything I could find online and nothing gets me connected. The service is running as LocalSystem. Here's the connecction string:
Server=local;Database=Test;Trusted_Connection=True
Here's the error message I'm getting:
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)
Server should be "localhost", not "local", and the "TCP/IP" and "Named Pipes" protocols should be enabled in SQL Server Configuration Manager. Also, if you want to use a trusted connection, you might need to enable Windows Authentication on your MVC3 application, otherwise provide a username and password in the connection string as well.
If you are working with your local SQL Server you need to use localhost or "."