my asp.net application runs successfully in development server of visual studio. but when i deploy my application in IIS it generates the error as follows
Failed to generate a user instance of SQL Server due to failure in
retrieving the user's local application data path. Please make sure
the user has a local user profile on the computer. The connection will
be closed.
what are the necessary changes that i should do in my application. also guide me how to deploy my database on IIS.
What is your connection string?
More specifically, I am wondering if you are using a .mdf file as your database.
If this is the case, you need to ensure that your web application has write-permissions within the App_Data folder of your website.
It is hard to say exactly without seeing your connection string, but possibly this KB article will help. It relates to SQLExpress and the error you are seeing.
http://support.microsoft.com/kb/2002980
Related
I am trying to deploy a WCF service that uses a SQLite DB to read some data as well as connecting to another Database (MS SQL). The service itself is consumed by a ASP Web site running on the same server.
The problem is that only my user is able to fully use the website and service. Every other user can't seem to open the sqlite database file.
What kind of permissions or special access do you need to access a sqlite database from IIS?
The Application pool is setup with a domain account so that access to the MS SQL Database can be granted (Integrated Security).
The folder where the database is stored is accessible by the account. And I've even tried to make it accessible by Everyone and all users with no luck.
I feel I'm missing something obvious but I can't figure out what...
Update: The error is as follows:
System.Data.Entity.Core.EntityException
An exception of type 'System.Data.Entity.Core.EntityException' occurred in EntityFramework.dll but was not handled in user code
Additional information: The underlying provider failed on Open.
Inner Exception:
System.Data.SQLite.SQLiteException
Unable to open database file.
I was able to resolve the issue, I'm going to document it here for posterity. I took a few steps to do so, and I currently don't have the environment set up to be able to reproduce the issue consistently and quickly, so I'm not entirely sure which was the actual solution.
Disclaimer aside, here are my changes:
I created a new Application Pool and Website on IIS, on another directory entirely, not on "C:\inetpub\wwwroot". I used "C:\Sites\MySite" to deploy both my WCF service and the website which consumed it.
I changed the application pool identity account to a new AD Service account.
I placed the database inside of the Service Web App directory, within a directory called data. I removed all inherited permissions from the directory and the database file, and gave the both the service account and Everyone Full Control of the directory and database file.
I edited the connection string for sqlite to have the setting "Journal Mode=Off;".
I stopped and started both the Application Pool and the WebSite on IIS.
After this the service worked correctly, and I was able to access both the database file and the connection to SQL Server. If I get the opportunity, I would set up some kind of virtual network to replicate this and see if I could figure out exactly what caused the error in the first place.
I have created an ASP.NET MVC web app which uses an SQLite database under EF6.
The app works fine in VS. The database is included in the project in the App_Data folder. When I publish to Azure (or an IIS test server on the LAN) I get an error. The Azure instance is showing an HTTP 500 error, and it only happens on views which require database access to load. Other than that it works fine. The IIS test server shows an error saying unable to open database file. I tried loosening file permissions on the .db file on the IIS instance, but nothing changed. I'm not sure how to go about doing anything on the Azure instance.
Can someone please assist me with debugging a SQLite connection problem on Azure/IIS?
Details
VS 2015 Enterprise
Azure app services (free tier, production server)
SQLite3 database
IIS on Windows Server 2012R2 (test server)
I have tried all sorts of combinations of connection strings:
setting a connection string to the D:/xxx/xxx path in Azure Portal
modifying the connection string in the deployment profile in VS (replaces value in web.config upon deployment)
just leaving it all the same
Nothing has worked or even changed the error. Perhaps one of those configurations is able to access the file but simply can't open it (which is sort of what the IIS error suggests, I think). Even then, how do I go about finding out?
EDIT
On the IIS test server I discovered that the entire problem was that the connection string in Web.config was wrong. I manually edited it on the server and it fired right up. I'm still not sure how to correct the path on the Azure server, nor how to correct my deployment settings in VS to inject the correct path. Thoughts along those lines are still appreciated.
EDIT 2
I've also found that each time I hit a page requiring DB access, I see this error show up in the application logs on Azure:
2017-01-03T20:25:32
System.ApplicationException: The trace listener AzureBlobTraceListener is disabled. ---> System.InvalidOperationException: The SAS URL for the cloud storage account is not specified. Use the environment variable 'DIAGNOSTICS_AZUREBLOBCONTAINERSASURL' to define it.
at Microsoft.WindowsAzure.WebSites.Diagnostics.AzureBlobTraceListener.RefreshConfig()
--- End of inner exception stack trace ---
After some abysmally slow debugging sessions, I finally remembered that in toying around I had set a connection string value in the Azure portal.
Apparently whatever value is set in the Azure Portal overrides (at runtime?) the values in the Web.config file
I simply deleted the connection string from the Azure Portal (your app/Application Settings/Connection Strings) and it worked. The final connection string looks like this:
<add name="yourThingEntities" connectionString="metadata=res://*/cadb_SQLite.csdl|res://*/cadb_SQLite.ssdl|res://*/cadb_SQLite.msl;provider=System.Data.SQLite.EF6;provider connection string="data source=D:\home\site\wwwroot\App_Data\yourSQLiteDBFile.db"" providerName="System.Data.EntityClient" />
To get the Web Deploy working in VS, you'll need to edit the publish profile to have a connection string matching the format
data source=D:\home\site\wwwroot\App_Data\yourSQLiteDBFile.db
Apparently not many people use SQLite for web apps, and most people should not. If you ever expect more than one user for your website at a time, you shouldn't fix SQLite, you should convert to SQL Server CE or just full-blown SQL Server which Azure will take care of for a paltry $5/mo. Choose wisely!
I have an ASP.NET MVC5 web application that was originally created using VS2013 and uses Entity Framework 6 Code First, with data migrations. It has been working fine (in production) for almost a year and has been re-deployed numerous times, from Visual Studio, using Web Deploy.
Today, I opened the solution in VS2015 and redeployed a known working version of the codebase to production without any problems. However, after deployment, the production website suffered from the problems described in this article, which I solved by applying author's the recommended fixes.
After applying these fixes, I now have a new problem: an exception that suggests that the application is trying to access the database using the wrong connection string:
Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed.
Within the details of the exception page, the cause of the problem is clarified:
The connection string specifies a local Sql Server Express instance using a database location within the application's App_Data directory.
I'm puzzled by this because the application has a dedicated SQL Server instance that is accessed using a regular connection string. I've checked the Web.config generated by Web Deploy and it seems to be intact. It contains a named connection string that correctly references the production SQL Server instance, and the code (which hasn't changed) correctly instantiates an Entity Framework ApplicationContext using the named connection string.
Does anyone have any idea why this application now expects to create its own SQL Server instance or what I can do to debug this problem?
Many thanks for your suggestions,
Tim
A few things you can try before making the web deploy:
Check if the project that contains the connection string declaration (web.config) is setted as the 'startup project'.
Rebuild the solution in release mode.
In the Publish Web wizard, in Settings, expand File Publishing Options and check 'Remove additional files at destination' and 'Exclude files from App_Data folder'
I just created my first ASP.NET Version 4 app using Visual Studio 2010 and SQL Express 2008.
I copied the files to IIS and run the default.asp. This loads the programs main menu. So far so good.
When I open the read webform and do a read of my database I get the following Error:
Server Error in '/Diary' Application.
Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed.
Any idea how to fix this error?
Did you look at support articile for the very issue.
Or even this
I have a very simple app on my local machine that uses the ASP.NET membership provider. This works fine on my local machine.
I have published the app to our web server, and I need to know the specifics of setting up the application for asp.net membership to work.
I have a basic understanding that it uses an MDF file and somehow connects to a SQL database (SQLEXPRESS I assume on my local machine) which holds the user/role information.
I keep getting an error that it cannot connect to a SQL database when running the published application on the web server.
I wish to use a SQL server on a different machine (SQL69) than my web server (WEB69)
I have created a new connection string, but how do I tell ASP.NET to use it instead of the "LocalSqlServer" connection string that is created by default?
Can someone explain what is required to me?
Thanks for any help you can offer.
Use the ASP.NET SQL Server Registration Tool without any parameters to set up the SQL Server membership on your local machine. This will also update your config file:
http://msdn.microsoft.com/en-us/library/ms229862%28VS.80%29.aspx
You need to set up SQL Server DB membership on your local machine first. After you have this working, you can simply script the entire DB for your production environment. For this, you can use the Database Publishing Wizard in VS.
You can view a sample config file here:
http://www.codersbarn.com/post/2008/02/24/ASPNET-20-Guest-Book-Admin-Part-II.aspx