Using Visual Studio 2013, I've added the latest version of ODP.NET Managed to a project using Nuget:
Install-Package odp.net.managed
http://www.nuget.org/packages/odp.net.managed/121.1.2
Now, when I try to run the following code:
Database db = DatabaseFactory.CreateDatabase();
It throws the following exception:
An exception of type 'System.ArgumentException' occurred
in System.Data.dll but was not handled in user code
Additional information: Unable to find the requested .Net
Framework Data Provider. It may not be installed.
After reading of other users's similar issues, I added the Managed driver section to C:\Windows\Microsoft.Net\Framework64\v4.0.30319\Config\machine.config:
<system.data>
<DbProviderFactories><add name="Microsoft SQL Server Compact Data Provider 4.0" invariant="System.Data.SqlServerCe.4.0" description=".NET Framework Data Provider for Microsoft SQL Server Compact" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"/>
<add name="ODP.NET, Managed Driver" invariant="Oracle.ManagedDataAccess.Client" description="Oracle Data Provider for .NET, Managed Driver" type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
</DbProviderFactories>
</system.data>
But that had no affect.
I have the connection string specified as such in my web.config, but I'm not sure if it is even looking at the connection string format as it is failing before I open the connection:
<connectionStrings>
<add name="OneCDPBuild"
providerName="Oracle.ManagedDataAccess.Client"
connectionString="Data Source=database;user id=IDhere;pwd=passwordhere;" />
</connectionStrings>
I added the following to my web config:
<system.data>
<DbProviderFactories>
<remove invariant="Oracle.ManagedDataAccess.Client" />
<add name="ODP.NET, Managed Driver"
invariant="Oracle.ManagedDataAccess.Client"
description="Oracle Data Provider for .NET, Managed Driver"
type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
</DbProviderFactories>
</system.data>
I was getting this error when deploying an ASP.NET MVC 5 application using EntityFramework 5 to our 64-bit server on which the 64-bit version of the ODAC client components were installed.
I followed b_levitt's advise and confirmed that the connection could be opened manually without using the factories, so the ODAC was installed and working, but the factory methods were unable to locate the assemblies.
After pulling my hair for an undisclosed amount of time, I figured out that the problem was with the machine.config file for the 32-bit version of the .NET framework. It did not include the entries for the oracle providers, so I manually added the following entries to this file:
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.config
Under
<configuration>
<configSections>
make sure that you have the following two section entires:
<section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
<section name="oracle.dataaccess.client" type="System.Data.Common.DbProviderConfigurationHandler, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
You can get the exact entries from your machine.config file under the framework64 folder.
Next, under
<system.data>
<DbProviderFactories>
make sure that you have the following two factory names:
<add name="ODP.NET, Managed Driver" invariant="Oracle.ManagedDataAccess.Client" description="Oracle Data Provider for .NET, Managed Driver" type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
<add name="ODP.NET, Unmanaged Driver" invariant="Oracle.DataAccess.Client" description="Oracle Data Provider for .NET, Unmanaged Driver" type="Oracle.DataAccess.Client.OracleClientFactory, Oracle.DataAccess, Version=4.121.1.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
After adding these entries, everything was working for me.
I would start by doing a direct test and avoiding the factory methods:
var conn = new Oracle.ManagedDataAccess.Client.OracleConnection("your connection string");
conn.Open();
Any issues here will either be related to the Oracle.ManagedDataAccess.dll missing from the bin directory, or connectivity issues caused by the connection string (assuming you can already connect to the oracle instance via other means).
As for the factory, it looks like you're using some out of date enterprise library code. In later versions of the framework I believe you would use:
var factory = DbProviderFactories.GetFactory("ODP.NET, Managed Driver");
var conn = factory.CreateConnection();
I think if you take it one step at a time you'll get better feedback.
I solved mine changing the IIS Application Pool configuration for Enable 32-bit Application to FALSE.
I was getting the exception Failed to find or load the registered .Net Framework Data Provider because the ODAC I installed is for 64-bit, and my app pool was making the app run at 32-bit.
Related
I'm new on this. I got a sample project that runs perfectly on another pc but get an error when running on my own pc. I changed the connection string and restored the database only. I am using a SQLServer connection, but when I run the project it shows a MySQLRoleProvider error. I searched web.config for this configuration but it isn't there. How can I solve this issue?
The message:
`Parser Error Message: Could not load file or assembly 'MySql.Web, Version=6.7.4.0, Culture=neutral, PublicKeyToken=+++' or one of its dependencies.
<add name="MySQLRoleProvider"
type="MySql.Web.Security.MySQLRoleProvider, MySql.Web, Version=6.7.4.0, Culture=neutral, PublicKeyToken=***"
connectionStringName="LocalMySqlServer"
applicationName="/"/>`
You need to install the MySQL Connector binaries first for this to work.
http://dev.mysql.com/downloads/connector/net/
If after installation you still face problems, verify that the dll's are declared in machine.config file of the framework version that you're running.
Add following to config file...
<configuration>
<!--Other omited-->
<system.data>
<DbProviderFactories>
<clear />
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient"
description=".Net Framework Data Provider for MySQL"
type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data,
Version=6.6.6.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
<!--Other omited-->
</configuration>
I have just started using Azure and I am having a problem accessing the MySQL DB I set up. It appears as if Azure is referencing the MySQL.Data.dll version 6.5.4 instead of the version I require, MySQL.Data.dll v6.8.3. I receive the following error:
MySql.Data.MySqlClient.MySqlConnection cannot be cast to
MySql.Data.MySqlClient.MySqlConnection. Type A originates from
'MySql.Data, Version=6.5.4.0, Culture=neutral,
PublicKeyToken=c5687fc88969c44d' in the context 'Default' at location
'D:\Windows\Microsoft.Net\assembly\GAC_MSIL\MySql.Data\v4.0_6.5.4.0__c5687fc88969c44d\MySql.Data.dll'.
Type B originates from 'MySql.Data, Version=6.8.3.0, Culture=neutral,
PublicKeyToken=c5687fc88969c44d' in the context 'Default' at location
'C:\DWASFiles\Sites\test\Temporary ASP.NET
Files\root\fc8f3c27\4f9201b0\assembly\dl3\ca8ec5e2\74482a5e_285fcf01\MySql.Data.dll'.
I tried using my application with v6.5.4 but I require v6.8.3 for it to work. Numerous searches have not revealed a solution. Does anyone have any ideas? The checked using Web Matrix that the version in the bin directory is 6.8.3. How can I reference this correct dll?
I had the same problem.
The problem is that on the server there is installed a lower version of the MySql library.
You can bypass this modifying your web.config file:
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient" />
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.8.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
I'm doing asp.net mvc3, and I have a problem with ODP.NET, Oracle.DataAccess.
Whenever I try to do my unit test, it throws a FileNotFoundException.
I thought I've installed and been using Oracle.DataAccess v4.112.3.0, but my application keeps looking for 'Oracle.DataAccess, Version=4.121.1.0'.
Still I can find 'Oracle.DataAccess v4.112.3.0' in my GAC and through the FusionLog I found belows in my machine.config. So I guess there are some version conflict of ODP.NET.
<system.data>
<DbProviderFactories>
<add name="Oracle Data Provider for .NET" invariant="Oracle.DataAccess.Client" description="Oracle Data Provider for .NET" type="Oracle.DataAccess.Client.OracleClientFactory, Oracle.DataAccess, Version=4.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
<add name="ODP.NET, Managed Driver" invariant="Oracle.ManagedDataAccess.Client" description="Oracle Data Provider for .NET, Managed Driver" type="Oracle.ManagedDataAccess.Client.OracleClientFactory, Oracle.ManagedDataAccess, Version=4.112.3.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
<add name="Microsoft SQL Server Compact Data Provider" invariant="System.Data.SqlServerCe.3.5" description=".NET Framework Data Provider for Microsoft SQL Server Compact" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=3.5.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91" />
</DbProviderFactories>
So, I've tried to modify the version in the machine.config but it didn't work.
Anyone can help me to fix this?
You can always force a specific version with a runtime redirect in web.config (or machine.config), provided the Oracle dll's interface across versions has stayed the same:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Oracle.DataAccess" publicKeyToken="89B483F429C47342"/>
<bindingRedirect oldVersion="4.121.1.0" newVersion="4.112.3.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
From my experience this trick has worked when redirecting from 10.1 to any newer version, but once we ran in mysterious errors when trying to redirect backward (see this), therefore I advise you to better find the exact reason why this is happening - look in your *.csproj which Oracle.DataAccess exactly is referenced and/or disassemble your binaries to inspect also the references of referenced libraries. (It is possible that rather than your code some 3rd party lib you use wants this exact version of ODP.NET).
I am currently working on a 3.5 .NET C# Project. it uses an external program that takes an argument when I build and run it. The external program goes to index a structured or an unstructured source of data.
The C# project is a simple .dll that override some of the external program methods. At the initialization part, I do request a connection to my postgreSQL DB in order to get back a unique ID.
WARNING : Indexer and my DB have no link, Indexer can index folder with .xls files, or mysql DB. My PostgreSQL is here just to bring a unique ID and store some important informations
My problem is when I launch as an external program the DBConnector which is a 32 bit indexer, everything goes well.
Whereas when I launch the AlfrescoConnector which is a 64 bit indexer, I can't open my postgreSQL database.
I put the x86 & x64 type of connector but I don't know if the problem comes from there.
I'm working on Visual 2012, my debug is set to produce a x86 compatible program (changing it to "any CPU" or "x64" doesn't solve the problem)
The db object I use is DbClient which is a specific method that you won't find on the internet because it comes from the external program reference, but it works as a classic DbConnector.
My DbClient object looks like this :
dbClient = {Sinequa.Common.DbClient}
_CurrentTransaction = null
ConnectionString = "Server=localhost;Port=5444;User Id=USERSAMPLE;Database=DBSAMPLE;Password=PWDSAMPLE;"
DbCn = null
DbCnSubSelect = null
DbFactory = null
DbIsolationLevel = Unspecified
DefaultCommandBehavior = SequentialAccess
Engine = Postgres
Error = 0
ErrorText = null
LastRowAffected = 0
LOBFetchSize = 0
Provider = "Npgsql"
RefreshCount = 0
RefreshCurrent = 0
Schema = null
The error comes when I do myDbClient.Open() with the Alfresco one
Any suggestions ? Need more details ? I'm ready to solve this painful error with you my fellows !
The Alfresco x64 bit connector use the x64 bit of the .NET configuration file. The configuration files located at:
C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\machine.conf
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\machine.conf
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG\machine.conf
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.conf
Remember that the problem is the missing provider. So to solve this problem you have to insert the lacking provider between the DbProviderFactories tag like this:
<DbProviderFactories>
<add name="Odbc Data Provider" invariant="System.Data.Odbc" description=".Net Framework Data Provider for Odbc" type="System.Data.Odbc.OdbcFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<add name="OleDb Data Provider" invariant="System.Data.OleDb" description=".Net Framework Data Provider for OleDb" type="System.Data.OleDb.OleDbFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<add name="OracleClient Data Provider" invariant="System.Data.OracleClient" description=".Net Framework Data Provider for Oracle" type="System.Data.OracleClient.OracleClientFactory, System.Data.OracleClient, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<add name="SqlClient Data Provider" invariant="System.Data.SqlClient" description=".Net Framework Data Provider for SqlServer" type="System.Data.SqlClient.SqlClientFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<add name="Npgsql Data Provider" invariant="Npgsql" description=".Net Framework Data Provider for PostgreSQL" type="Npgsql.NpgsqlFactory, Npgsql, Version=2.0.13.91, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7"/>
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.5.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d"/>
<add name="Microsoft SQL Server Compact Data Provider 4.0" invariant="System.Data.SqlServerCe.4.0" description=".NET Framework Data Provider for Microsoft SQL Server Compact" type="System.Data.SqlServerCe.SqlCeProviderFactory, System.Data.SqlServerCe, Version=4.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"/>
</DbProviderFactories>
With this insert the next time the DbClient will try to open the Database and get the asked provider, it will succeed.
I am using DbProviderFactories.GetFactoryClasses() method to check odp.net exists or not. It works perfectly fine when odp.net is not installed or when it is installed. But when I unistall odp.net 10g then also it shows odp.net provider exists. I have checked registry it doesn't show odp.net. Please suggest a better way to check if odp.net exists or not.
Check the machine.config's in folders like C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config and C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG .
What do you see in element ? :
Something like this?
<system.data>
<DbProviderFactories>
<add name="Oracle Data Provider for .NET" invariant="Oracle.DataAccess.Client"
description="Oracle Data Provider for .NET" type="Oracle.DataAccess.Client.OracleClientFactory, Oracle.DataAccess, Version=2.112.1.1, Culture=neutral, PublicKeyToken=89b483f429c47342" />
.....
</DbProviderFactories>
</system.data>