I have a VS 2012 Web Project Up. I have ODP.NET installed as we are an Oracle Workshop. I inherited a project that uses Oracle.ManagedAccess.Data and EF.
Upon running the project in VS 2012, I get the following error:
There is a duplicate 'oracle.manageddataaccess.client' section defined..
The solution was to disable the following line in web.config
<!--<section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />-->
Which was fine. The project compiled but upon executing a simple command such as getting a password back where it has to read the database another error was tripped up:
System.Data.ConstraintException: Column 'InvariantName' is constrained to be unique. Value 'Oracle.ManagedDataAccess.Client' is already present.
Now I'm aware that the error is tripped up by ODP.NET and having it exist in the GAC thus the double error reporting.
Is there another line I should be commenting out or is there a way to disable ODP.NET briefly? I don't want to install that client as I use it for other projects.
thanks
I found the following on the Oracle site regarding the "There is a duplicate 'oracle.manageddataaccess.client' section defined.":
If your application is a web application and the above entry was added
to a web.config and the same config
section handler for "oracle.manageddataaccess.client" also exists in
machine.config but the "Version" attribute values
are different, an error message of "There is a duplicate
'oracle.manageddataaccess.client' section defined." may be
observed at runtime. If so, the config section handler entry in the
machine.config for "oracle.manageddataaccess.client" has to be removed from the machine.config
for the web application to not encounter
this error. But given that there may be other applications on the machine
that depended on this entry in the
machine.config, this config section handler entry may need to be moved to all
of the application's .NET config file on
that machine that depend on it.
I hope it helps.
I was getting the same error for an ASP.Net MVC project. I found that there is a version mismatch for oracle.manageddataaccess.client in the Web.config of the project, and machine.config in
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config, and
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config.
I had Version=4.122.18.3 in the Web.config and Version=4.122.1.0 in the machine.config.
I updated the version(replaced Version=4.122.1.0 of oracle.manageddataaccess.client with 4.122.18.3) in both the machine.config, and the problem resolved.
In my case I have multiple projects. One a Entity Framework data model, another which is an WCF Service using the EF Model, a WPF project using the WCF Service, and finally, my ASP.NET MVC prject, using the Entity Framework Data model directly.
We use Oracle and had a Nuget package oracle.manageddata. I used Version 12.1.21 in all the others, except my ASP project (which had version 12.1.22). After downgrading to what the other projects are using, my Web ASP is running again. Using different Nuget versions in various projects, in the same solution, doesn't seem to be such a good idea.
There are multiple ways to solve this problem. Not everyone has the luxury or desire to modify the machine.config (especially on a server). Perhaps the easiest way to solve this problem is to use bindingRedirect in your web.config (or app.config, if not a web application).
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Oracle.ManagedDataAccess" publicKeyToken="89b483f429c47342" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-4.122.21.1" newVersion="4.122.21.1"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
NOTE: The version I am using is 4.122.21.1. Be sure you match your own version that you are using.
NOTE: The redirect is on Oracle.ManagedDataAccess, not Oracle.ManagedDataAccess.Client; this is a common mistake that developers make.
If you want to make the change in the machine.config, proceed carefully as this could have unanticipated consequences on other apps on the machine. The simplest modification is to change the version of the Oracle.ManagedDataAccess.Client section from a strong version to any version by using an asterisk "*".
<section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=*, Culture=neutral, PublicKeyToken=89b483f429c47342" />
If you need additional clarification, let me know and I can give more details.
Related
Our .Net Framework 4.8 web application suddenly began to generate the following build-time error on our team city build server:
error ASPCONFIG: Unable to open configSource file ‘sessionState.config’.
Our web.config references an external session state file:
<sessionState configSource="sessionState.config" />
The project is under active development, however no related changes have been recently made to the application. We initially thought it was a configuration issue on the build server, however we realised that we could replicate the same issue on our development machines if we "Published" the project and ticked the option to "merge all outputs into a single assembly". We published to a local file to replicate what was happening on our build server.
Modifying the Build Action of the sessionState.config file from None to Content removed the problem, but this had the effect of copying our sessionState.config file to the deployment package, which we didn't want.
We spent many hours trying to investigate this problem and finally decided to try uninstalling recent Microsoft Updates. This resolved it! I'm posting this here in the hope that it will save at least one other person the time we spent.
This specific October 13, 2020 update was the cause, however, it didn't come up for us when we searched https://support.microsoft.com/en-us/help/4578974/kb4578974-cumulative-update-for-net-framework
After you apply this October 13,
2020 Security and Quality Rollup for .NET Framework 4.8, some ASP.Net
applications fail during precompilation. The error message that you
receive will likely contain the words “Error ASPCONFIG.”
An invalid configuration state in either the "sessionState,"
"anonymouseIdentification," or "authentication/forms" sections of
"System.web" configuration. This might occur during build-and-publish
routines if configuration transformations leave the Web.config file in
an intermediate state for precompilation.
Note their spelling error in anonymousIdentification
The solution is to add this appSettings key to your web.config
<configuration>
<appSettings>
<add key="aspnet:DisableAppPathModifier" value="true" />
</appSettings>
</configuration>
The article notes that setting the value to either "true" or "false" will avoid the issue. It was recommended to set this value to "true" for sites that use cookies for the session state id.
We use cookies, so added this to our web.config with a true value, and it resolved the problem.
I am trying to use FxCop on a project that has been upgraded from MVC 1 through MVC 3. The first time I ran my project, it asked me to locate MVC 3 for it. Once I did, it continued on for a bit and then asked me to find MVC 1, which I find odd because I no longer have it installed on this machine and the website operates just fine. This is the message it is giving me:
In our Web.config file we have the following, which is created automatically when you upgrade versions of MVC:
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
Does anyone have any idea how to get rid of this error so FxCop will complete it's analysis of this project?
Got same problem with FxCop. Have you checked other assemblies, that might be dependant on MVC1? AFAIK MVC1 required 3 assemblies:
System.Web.Mvc
System.Web.Routing
System.Web.Abstractions
Maybe Routing or Abstractions left somewhere in your references?
As a workaround to get FxCop going you can update the FxCop configuration and set the following:
<appSettings>
<add key="AssemblyReferenceResolveMode" value="StrongNameIgnoringVersion" />
</appSettings>
Its most likely currently set to StrongName.
The allowable values are:
None - Do not match strong names at all, any assembly with the same file name is considered a match.
StrongName - Strong names including assembly name, version, culture and public key token must exactly match.
StrongNameIgnoringVersion - Strong names including assembly name, culture and public key token must exactly match. Assemblies with an equal or greater version are considered a match.`
However I would look at your assembly with something like DotPeek to try to determine why its still referencing the older version.
I'm trying to get an ASP.NET MVC 3 site running on IIS 6.0.
Currently when I request a page from the server it gives the following error:
Parser Error Message: This method cannot be called during the application's pre-start initialization stage.
on this line:
<add name="MyMembershipProvider" type="NS.MyMembershipProvider" connectionStringName="MyDatabase" applicationName="/MySite"/>
I'm completely stumped and don't have much of a clue about the ASP.NET application lifecycle, let alone the differences between 6.0 and 7.0. Reading through the MSDN pages on it hasn't seemed to help much.
Does anyone have any insight or any good links for investigation? :)
Add this in your web.config (in the appSettings section):
<add key="enableSimpleMembership" value="false"/>
<add key="autoFormsAuthentication" value="false"/>
EDIT:
For the ones who ask why, it is a known issue described in the mvc 3 release notes
More details here
After upgrading some of my applications from ASP.NET MVC3 to MVC4 I was getting this error. It was a result of the WebMatrix assemblies (WebMatrix.WebData.dll and WebMatrix.Data.dll). I removed those references and assemblies from the /bin directory and that took care of the issue.
#Ek0nomik is right. We migrated from the MembershipProvider to the new ExtendedMembershipProvider allowing us to take advantage of some of the new functionality offered in the WebMatrix namespace. By default Simple Membership is enabled for some reason so we had to disable it explicitly since we didn't want to go as far as using the SimpleMembershipProvider.
All we had to do was add this to the web.config:
<add key="enableSimpleMembership" value="false"/>
Having Simple Membership enabled caused the Provider initialisation code to execute before the Application_Start handler. Our app structure requires App_Start to be the first thing to execute. Personally I would always expect this but Simple Membership changes this behaviour. Beware.
Well, I just got this error, and it resulted from having accidentally copied a .cshtml into the root of my project. It wasn't even included in the project. Deleted that and the error went away. This was with MVC3 on IIS7. I imagine some of the people getting this problem are in the same boat.
This is caused by any of a number of Reflection calls being made too early in an Application. It just so happens the Web.Config suggestions in other answers prevented one such Reflection call from being made. In my case however:
I'm using Entity Framework, and ran update-database. I got:
This method cannot be called during the application's pre-start initialization phase.
As it turns out we had code that used a library which was recently modified to get all code in all namespaces/projects. Specifically, it called:
System.Web.Compilation.BuildManager.GetReferencedAssemblies()
Kaboom. That caused this obscure error. EF Migrations run in a weirdo zone where the application is half running and half not, meaning the above method can never be called by any code Migrations would call on.
I have installed .NET Framework 3.5 SP1 and ASP.NET MVC CTP in a Windows Server 2003 R2 box, but my ASP.NET MVC site still doesn't work on that server. I was searching the internet and IIS for a solution and I noted that I can't choose other .NET Framework version besides 2.0 for my virtual directories. I'm almost sure if I correct this I can make my site work there.
Currently the main "/" URL answers with:
Directory Listing Denied
This Virtual Directory does not allow contents to be listed.
And the "/Default.aspx" URL answers with:
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Section or group name 'system.web.extensions' is already defined.
Phil Haack has a pretty good writeup here
http://haacked.com/archive/2008/11/26/asp.net-mvc-on-iis-6-walkthrough.aspx
I had the similar issue.
I recently upgraded my server to support .net framework 4.0.
Converted my application to support .net fx 4.0.
Deployed the application on sever and trying to test .. I get "HTTP Error 404 - File or directory not found"
Solution
Open IIS Manager, expand the master server node (i.e, the Servername node), and then select the Web service extensions node.
In the right pane of IIS Manager, right-click the extension "ASP.NET v4.0.*".
Click the Allow button.
Besides Jason's answer, the common things to look for is:
Enable Wildcard mapping and point it to the aspnet assembly Phil mentions in Jason's link.
The /default.aspx error you are getting seems to be a web.config configuration error. At the very top of your web.config, look for:
<sectionGroup name="system.web.extensions"
Most likely it is defined twice. You only need the reference for the RC build you have. If you need the exact RC references, create a new ASP.NET MVC Web Project in a temp folder. And then grab the web.config from it.
-E
I also encountered this problem, in my case the solution was to uninstall the ASP.NET MVC Beta.
The application I was trying to get working had the version 1 MVC dlls bin deployed and once the Beta was uninstalled it all worked fine.
Similar issue: We tried to install an MVC4/.NET 4 app on an IIS6 box, set up everything as described, and got same error:
Directory Listing Denied
This Virtual Directory does not allow contents to be listed.
For us, the final fix was to add the UrlRoutingModule to the web.config:
<add name="UrlRoutingModule"
type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
Which makes sense, but I don't know why we needed to explicitly add it and others didn't. (We are running in a directory under Sharepoint, maybe related...)
I have a ASP.NET MVC app that is using SQLite database through Entity Framework.
Everything works on VS 2008's local development webserver.
However, deploying the web app to my service provider causes this error:
[ArgumentException: Unable to find the requested .Net Framework Data Provider. It may not be installed.]
System.Data.Common.DbProviderFactories.GetFactory(String providerInvariantName) +1308959
System.Data.EntityClient.EntityConnection.GetFactory(String providerString) +35
Service provider has commented that they do not support SQLite. I had though that SQLite is independent of service provider's settings since it's App_Data deployable.
Has anyone experiences of a succesfull Entity Framework + SQLite deployment?
Cheers,
-pom-
You're unlikely to be reading this anymore, but you're missing the following in your app.config (or, for you, web.config):
<configuration>
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SQLite" />
<add name="SQLite Data Provider" invariant="System.Data.SQLite"
description=".Net Framework Data Provider for SQLite"
type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite" />
</DbProviderFactories>
</system.data>
</configuration>
Specifically, if you're using sqlite in a library which is linked into your website, you must add this to the config file of the website - not the library! This is because of how you're loading the provider: essentially, you're determining at runtime which dll to load, using the string "System.Data.SQLite", and locating the appropriate provider is done using the settings of the entry assembly.
Edit: By the way, when you're writing the library that has an sqlite dependancy, you can avoid this complexity. You do not need to use DbProviderFactories to look for sqlite at runtime; you can take a compile-time dependancy just as well, which can be easier to manage. Then you can ignore the above app.config section, and instead replace all instances of:
DbProviderFactories.GetFactory("System.Data.SQLite").CreateConnection()
with
System.Data.SQLite.SQLiteFactory.Instance.CreateConnection()
If you do so, you're using a plain library call to create the connection and there's no runtime selection of db provider. That can be less flexible since you can no longer exchange data providers via the config file, but for many libraries that's sufficient. Unfortunately, if you don't control the library code, this isn't an option.
Have you tried adding the required DLL(s) to your application's bin directory? You might want to look at Phil Haack's article on Bin Deploying ASP.NET MVC for ideas on how to do this automatically.
SQLite needs full trust permission for ASP.NET application deployment. Many shared hosting providers don't allow that. You might wan't to check this.