I have two ASP.NET websites on a web-server, and two SQL Server databases.
I have a folder for Website #1, which contains a web.config with a connection string pointing to Database #1.
Under the folder for Website #1 there's a staging folder called 'staging', containing Website #2, and the web.config there has a connection string that points to Database #2.
Website #1 works perfectly.
But when I try to run Website 2, I always get 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)
I've verified that the connection string is correct and that it's pointing to Database #2.
But even when I swap in the connection string from Website #1, which works perfectly on Website #1, it still fails.
Here's what the connection string looks like:
<connectionStrings>
<add name="WebsiteConnectionString" connectionString="Data Source=localhost;Initial Catalog=WebsiteStaging;User Instance = false;User Id=xxxx;Password=yyyy" providerName="System.Data.SqlClient" />
</connectionStrings>
Is there anything unusual going on here that I'm not aware of?
Not sure which version of IIS you're using, but you might need to create two separate web applications: one pointing to the Website #1 folder and the other Website #2.
When you view Properties of the Website/virtual directory, the Application name should be set for both directories. Is this the case?
LOCALHOST is for IIS
(LOCAL) is for SQL Server
My connection strings usually say "Server=(LOCAL);Integrated Security=SSPI...."
I would check the security tab to find out the identity that both web sites are running under.
Really sorry... looks like it wasn't to do with the connection at all.
It was because the Linq-to-SQL data-layer (which was in another project) was referencing its own connection string (even though, wherever I instantiated a DataContext in the Website project, I always used the web.config connection string as a parameter).
But thanks for your answers, those would probably be good things to check, had the above not been the problem.
Related
I am setting up an existing application on a new server. It is a mix of Asp.Net and Classic Asp pages. The asp.net pages work perfectly, but the classic asp pages give the following error:
[DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or
access denied.
My Settings:
Windows Server 2008 x64
IIS7
SQL 2008 Express with Advanced Services
32bit application
Here are some things I've tried:
Set IIS7 AppPool to enable 32-bit applications
Enabled "Active Server Pages" extension in IIS "ISAPI and CGI Restrictions"
Installed Frontpage 2002 Extensions for IIS7 (from RTR)
Enabled Named Pipes protocol in SQL Config Mgr
My Connection String:
connectionString="Data Source=(local);Initial Catalog=System;Persist Security Info=True;User ID=System;Password=mypassword" providerName="System.Data.SqlClient"
My CLICONFG Alias:
Server Alias = System
Network Library = Named Pipes
Connection Parameters = (local)
I've successfully installed the program in this environment before without any issues. Both *.asp and asp.net are using the same connection string, so I can't see how that is a problem. The User "System" specified in the Connection String is setup as a user in SQL with all permissions granted.
Please help!! I've spent over 3 days on this.
Thanks!
I'm not so sure that classic asp understands all the parameters in your connection string. It likely ignores something it doesn't understand but the on that I think it's having the greatest trouble with is this one:
Data Source=(local)
and possibly
providerName="System.Data.SqlClient"
I would try either:
Creating a second connection string and use one for classic ASP and the other for aspx. Use this 'simple' format for classic asp:
Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword;
Change the Data Source parameter to use the actual server or instance name.
System.Data.SqlClient is a data provider for asp.net, it wouldn't work with classic asp.
Here's an example of a Classic ASP connection string for SQL Server
Provider=sqloledb;Data Source=yourServerAddress;Initial Catalog=yourDataBase;User Id=yourUserid;Password=yourPwd;
For more examples see here - look at oledb providers.
http://www.connectionstrings.com/sql-server/
Also, where are you putting your connection string? If it's in web.config then .net will be able to read it but Classic ASP won't. It needs to go in the page which wants to connect itself, in an include or in global.asa
Edit - one extra point. If you're using SQL Server Express then you need to specify this - eg:
Data Source=localhost\SQLEXPRESS
Shawnda, John and Evan make good suggestions and points.
I'll share my active live server configurations with you so you have something to test on your server. That's if you're running MSSQL on IIS 7.x and Windows 2008 Server with any flavor of SQL Server 2008.
I run 2 servers mixed .Net and ASP one Web 2008 and 2008 R2 with IIS .Net sites with ASP using a common db all sites mixed work just fine.
First tip, make your connection string a Call Function or Sub.
From what you said you have to find all the locations you have your connection string.
How we migrate will help you.
Create your function and place it into your SQL Included pages or your master scripts page that is included in all pages that need your connection string.
Function ConnOpen(SqlConn)
Dim strConnSql
Set SqlConn = Server.CreateObject("ADODB.Connection")
strConnSql = "Provider=SQLNCLI10;Server=SERVERNAME\SQLEXPRESS;Database=DBNAME;UID=USER;PWD=PASSWORD;"
SqlConn.Open strConnSql
End Function
Function ConnClose(SqlConn)
SqlConn.Close
Set SqlConn = Nothing
End Function
Follow what has been suggested and change the string.
This is how I migrate sites from databases.
I will add a new connection string as a function and test it on one of my pages.
If the new connection works I'll do a search and replace of the string.
Once you figure out which connection string works you're going to stop spending time like 3 days.
The string above is active on my .Net sites in my inc_sqlpage.asp which is included in all pages that require database connection.
You should find all your connection strings and remove and replace them with a easier to manage function.
Call ConnOpen(MyConn)
... 'your SQL
Call ConnClose(MyConn)
If after this method you still can't connect then I'll say it's your server naming or firewall if this is a new server.
Example: I do not use IP address connections only internal DNS machine names. If i changed the servername to IP I would see the same type of error.
I'm sure you have tried different settings but try the one above switching IP with Machine Name, .\ and localhost but not (local).
I found the solution!!!
Thanks everyone for your assistance. I finally found the solution!
Turns out the connection string for my classic asp pages were expecting SQL to be installed with the default instance....but I had done a named instance. The connection string had "Data Source = System" (System was an alias setup on the computer that only specified (local) as the connection....it did not specify the instance name.).
I changed the connection string to "Data Source = .\SQLEXPRESS" and it worked fine.
The connection string that was in there would have worked fine if I had selected "Default Instance" during the installation....as had been done on other servers I had installed.
Thanks again!
I cannot get my web app to connect to the database when running the app. I can connect in the SQL Server object explorer and I took the connection string from the connections properties
Here is my connection string :
<add name="Quotes.DAL.QuotesConnection"
connectionString="Data Source=(localdb)\v11.0;Initial Catalog=TestDB;Integrated Security=False;User ID=sa;Password=***;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False"
providerName="System.Data.SqlClient" />
I can connect as SA and I can create the database that it points to in Management Studio. When my app tries to connect via Entity Framework I get the following error :
System.Data.SqlClient.SqlException (0x80131904): Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject,
I'm running Windows 7 as a home dev machine so there is no Active Directory.
Can anybody explain why this might happen?
I have found that this is probably because I have Entity Framework in another assembly. I created a new web application and its connection string works. When it try the same connection string in my DAL it fails with this same error!
Thanks
It may be because of setting Integrated Security=False, I have never set it to false. I normally use just the bare minimum Server=myServerAddress;Database=myDataBase;User Id=myUsername;
Password=myPassword; when setting up my connection strings with sql authentication, only adding things as I need them.
The other issue I see is using SA to connect to the database. This breaks almost every best practice in the book and I would recommend creating an app specific password for when you roll out the program. The reason being is the GOD ACCESS account for the server will have its password in plain text in the app.config file. Just something to keep in mind.
EDIT: After some comment discussion the connection string was in the wrong config file.
I've created this MVC4 web application and went with a local MDF (localdb?). It's located in the \App_Data folder of my project. It's name is SiteDatabase.mdf.
But right now im struggling with the connection string, how can I "link" it up?
I got this:
<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\v11.0;Initial Catalog=SiteDatabase;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\SiteDatabase.mdf" providerName="System.Data.SqlClient" />
Where SiteDatabase.mdf is located in my App_Data folder.
The error Im getting:
Server Error in '/' Application.
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: 50 - Local Database Runtime error occurred. Cannot create an automatic instance. See the Windows Application event log for error details.)
Create a udl file, if it connects then the problem is the code / application, if it does not connect, then it's your firewall, connections string, dll library etc. Well the important thing here is probably the connection string. Do the following: create an empty text file and rename it "myconnection.udl". Now double click on the file and it will launch an applet. You can configuer the connection to your database and test it. (it will pick up registered connection libraries etc). If it give OK, then open the udl file in notepad, you will see the correct connection string. Paste to your app connection settings. UDL files are generally misunderstood. They are simply a text file that holds the connection settings. They then call the connection dll. If the udl file works then you have a correct connection string 100%
Try add before your connection string
<remove name="LocalSqlServer" />
I'm trying to connect to my SQL Server 2008 database with ASP.NET MVC 3. Here is my connection string:
<connectionStrings>
<add name="AppConnectionString"
connectionString="Data Source=(local);Initial Catalog=DatabaseName;User Id=UserName;Password=PassWord;"
providerName="System.Data.SqlClient" />
</connectionStrings>
Any idea of what's wrong?
When I try to query something in my DbContext I get this exception:
$exception {"The provider did not return a ProviderManifestToken string."} System.Exception {System.Data.ProviderIncompatibleException}
InnerException {"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)"} System.Exception {System.Data.SqlClient.SqlException}
Could someone help me please?
Thanks
First check if your mssqlserver services are running fine. Just run net start mssqlserver in your command prompt.
Then try changing the connection string Data Source=(local) to Data Source=.
All the above is assuming that you have sql server installed in your local machine.
That error means that either the name of your Data Source in your connectionstring is wrong or that your sql server is not configured to allow remote connections : see here how to fix it.
Can you ping the server?
You can create a new empty text file, rename it to test.udl, double click on it and create your connection string that way. (A dialog will open and you can select provider, server, database etc).
also, have a look at www.connectionstrings.com for example connection strings
There is also the instance to take into account. eg if you use sqlexpress it may be (local)\SQLEXPRESS
Besides (local) try (localhost) or 127.0.0.1 (loopback address - and no place like ;-)
Also a single period will "." resolve to the local machine.
Your connection string and the advice above assumes that you are trying to connect to an unnamed, default instance. If your server instance is named then you need to include that as part of your conn string, like: .\ServerName
More great info can be found at: http://connectionstrings.com
I had a similar problem, and these are the steps that helped me:
1) Your application must have an App.config containing a connectionstring named with the same name as your class that inherited from DbContext. In my case "TestEF_CF.ProductContext".
<add name="TestEF_CF.ProductContext" connectionString="Data Source=localhost;Initial Catalog=ef_cf_test;Integrated Security=True" providerName="System.Data.SqlClient" />
2) The database cannot be created before you start to use it. Just set the Initial Catalogue to the name you want Entity Framework to create when it autocreate the database.
See my stackowerflow question for more information if you need it:
Entity Framework 4.1 Code First Freeze
If you look at the InnerException it's possible that what you actually have is a Login issue.
What I had to do to fix this was, change the account the DefaultAppPool runs as, to NetworkService (go to Advanced Settings and change Process Model, Identity) and then pick an account which has access to your database.
Assuming of course your app is running in IIS using the DefaultAppPool.
I made it NetworkService and granted the NT AUTHORITY\NETWORK SERVICE user access to my existing database.
This then allowed me to connect. My case might be specific but I thought I'd share just in case.
SqlConnection [object name];
[object name] = new SqlConnection("Data Source=Server_address/name;Initial Catalog=myDatabase;Integrated Security=True");
[object name].Open();
Note: The square brackets which is shown should not be putted, only object name have to be placed.
Server_address : Your Computer name.
myDatabase : your Database name.
I have a website included login module.when i hosted the website in iis there is an error
Server Error in "/" Application.
system.invalid operation Exception: Instance Failure
My ConnectionString is like this
<add name="MyConnectionstring" Connectionstring="Data Source=IP Address,1433;Network Library=DBMSSOCN;initial catalog=Databasename;integrated security=True" Provider Name="System.data.sqlclient"/>
How can i solve this problem?Any one knows Please help me
Simply change DataSource=My-PC\\\SqlServer2008 to DataSource=My-PC\SqlServer2008 in your Web config because the previous one is valid one you are writing in Code Beind file but not in Web config file as it is an XML file.
The first thing I noticed is that you need to replace IP Address in your connection string with the actual IP address and Databasename with the actual database name. You also don't need ",1433" after the IP Address since 1433 is the standard port.
Second, is the SQL you are connecting to the default instance on the machine? If it is a named instance, you need to make sure to include the name in the data source setting.
Third, does the ID the ASP.NET process is running under have authority to connect to the SQL Server instance?