I am using Oracle 11g and Entity Framework 6 versions.
I am facing the following error:
"An error occurred while getting provider information from the
database. This can be caused by Entity Framework using an incorrect
connection string. Check the inner exceptions for details and ensure
that the connection string is correct."
My App.Config is as follows:
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework"
type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false"/>
<section name="oracle.manageddataaccess.client"
type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342"/>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
</startup>
<connectionStrings>
<clear/>
<add name="OracleDbContext" providerName="Oracle.ManagedDataAccess.Client"
connectionString=" Data Source=HRFOLATEST1;User ID=hrms2;Password=hrms2;"/>
</connectionStrings>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework"/>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
<provider invariantName="Oracle.ManagedDataAccess.Client"
type="Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices, Oracle.ManagedDataAccess.EntityFramework, Version=6.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342"/>
</providers>
</entityFramework>
<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=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342"/>
</DbProviderFactories>
</system.data>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<publisherPolicy apply="no"/>
<assemblyIdentity name="Oracle.ManagedDataAccess" publicKeyToken="89b483f429c47342" culture="neutral"/>
<bindingRedirect oldVersion="4.121.0.0 - 4.65535.65535.65535" newVersion="4.121.2.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
My Db Context:
class DatabaseContext : DbContext
{
public DatabaseContext() : base("OracleDbContext")
{
}
public DbSet<User> Users { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
//Configure domain classes using modelBuilder here
modelBuilder.Entity<User>().ToTable("HRMS_OLAS_TREE");
modelBuilder.Entity<User>().Property(user => user.ID).HasColumnName("EMP_ID").HasColumnType("VARCHAR");
modelBuilder.Entity<User>().Property(user => user.NAME).HasColumnName("EMP_NAME").HasColumnType("VARCHAR");
base.OnModelCreating(modelBuilder);
}
}
internal class User
{
public long ID { get; set; }
public string NAME { get; set; }
}
Please let me now what mistake i am doing.
I have changed the connection string to the following and it started working:
<add name="OracleDbContext" providerName="Oracle.ManagedDataAccess.Client"
connectionString=" Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=yourhostname)(PORT=yourportnumber))(CONNECT_DATA=(SERVICE_NAME=""servicename))); User Id=xxx;Password=xxxx;"/>
we can find these details in tnsnames.ora file.
In Db Context add the following code:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
base.OnModelCreating(modelBuilder);
modelBuilder.HasDefaultSchema("yourschemaName");
modelBuilder.Configurations.Add(new EmployeeMapper());
}
Related
I try to use MS Identity with an MySql Databse and Code-First.
My DbContext Class:
[DbConfigurationType(typeof(MySqlEFConfiguration))]
public class TestDbContext : IdentityDbContext<ApplicationUser>
{
public TestDbContext()
{
}
public TestDbContext(string cnString)
: base(cnString)
{
}
}
My App Config:
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<connectionStrings>
<add name="TestDbContext" providerName="MySql.Data.MySqlClient" connectionString="server=localhost;port=3306;database=test;uid=root;password=root"/>
</connectionStrings>
<entityFramework codeConfigurationType="MySql.Data.Entity.MySqlEFConfiguration, MySql.Data.Entity.EF6">
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
</defaultConnectionFactory>
<providers>
<provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.9.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</providers>
</entityFramework>
<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=6.9.7.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
</configuration>
If i use the normal DbContext its works with Code-First Migrations. But if i change to IdentityDbContext and i try to "Update-Database" i get the following Error:
Failed to set Database.DefaultConnectionFactory to an instance of the
'System.Data.Entity.Infrastructure.LocalDbConnectionFactory,
EntityFramework' type as specified in the application configuration.
See inner exception for details.
How can i get MS Identity to work with MySql?
Ok i have change the DefaultConnectionFactory to
<defaultConnectionFactory type="MySql.Data.Entity.MySqlConnectionFactory, MySql.Data.Entity.EF6" />
but now i get another Error:
Format of the initialization string does not conform to specification starting at index 0.
Ok i get the Database Connection to work but the Identity Tables such as aspnetuser won't create automaticly.
This question already has answers here:
Unable to find the requested .Net Framework Data Provider - SQLite
(2 answers)
Closed 8 years ago.
I can't configurate App.config. I have error
base {"Unable to determine the provider name for provider factory of type 'System.Data.SQLite.SQLiteFactory'. Make sure that the ADO.NET provider is installed or registered in the application config."} System.SystemException {System.NotSupportedException}
My code:
class Program
{
static void Main(string[] args)
{
new Program();
}
public Program()
{
CustomerContext cc = new CustomerContext();
cc.Customers.Add(new Customer() { Name = "sdf", LastName = "dfs" });
}
}
public class Customer
{
public int Id { get; set; }
public string Name { get; set; }
public string LastName { get; set; }
}
public class CustomerContext : DbContext
{
public DbSet<Customer> Customers { get; set; }
}
And App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
<provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
</providers>
</entityFramework>
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SQLite" />
<remove invariant="System.Data.SQLite.EF6" />
<add name="SQLite Data Provider (Entity Framework 6)" invariant="System.Data.SQLite.EF6"
description=".Net Framework Data Provider for SQLite (Entity Framework 6)"
type="System.Data.SQLite.EF6.SQLiteProviderFactory, System.Data.SQLite.EF6" />
</DbProviderFactories>
</system.data>
<connectionStrings>
<add name="CustomerContext" connectionString="Data Source=test.sqlite" providerName="System.Data.SQLite.EF6" />
</connectionStrings>
</configuration>
File test.sqlite is added to project also EF and SQLite are added by nuget
Comment out the following:
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
Also, is Entity Framework (edmx file) defined within your Application project or is it defined within a separate class library?
If it is in a separate class library, then copy the xml within your app config file of your class library project into the app config file of your app project.
Update:
Last time I checked, SQLite must be defined within your app project and NOT a separate class library.
So I just started using System.Data.Sqlite with entity framework 6 (downloaded the latest System.Data.Sqlite from Nuget, version 1.0.91.0)
After some configuration and code, I found out that I can read from the database but somehow write is not working.
Here's my code:
using (var context = new InternalDbContext())
{
var demo = context.DemoEntities.Where(d => d.ID == 1).FirstOrDefault();
demo.Name = "TestTest";
context.DemoEntities.Add(new Demo { Name = "Test" });
context.SaveChanges();
}
Basically after SaveChanges, nothing was updated in the DB. However I can read fro the DB with the data I manually populated via SQlite admin tool.
Here's my DB schema:
Table name :Demo
Field: ID - Integer Primary Key AutoIncrement
Field: Name - VARCHAR(256)
Here's my classes
public class InternalDbContext : DbContext
{
public DbSet<Demo> DemoEntities { get; set; }
public InternalDbContext()
{
// Turn off the Migrations, (NOT a code first Db)
Database.SetInitializer<InternalDbContext>(null);
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
// Database does not pluralize table names
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
}
[Table("Demo")]
public class Demo
{
public long ID { get; set; }
public string Name { get; set; }
}
App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<sectionGroup name="common">
<section name="logging" type="Common.Logging.ConfigurationSectionHandler, Common.Logging" />
</sectionGroup>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<common>
<logging>
<factoryAdapter type="Common.Logging.Log4Net.Log4NetLoggerFactoryAdapter, Common.Logging.Log4net">
<arg key="configType" value="FILE-WATCH" />
<arg key="configFile" value="log4net.config" />
</factoryAdapter>
</logging>
</common>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Common.Logging" publicKeyToken="af08829b84f0328e" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="log4net" publicKeyToken="669e0ddf0bb1aa2a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-1.2.13.0" newVersion="1.2.13.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
<provider invariantName="System.Data.SQLite.EF6" type="System.Data.SQLite.EF6.SQLiteProviderServices, System.Data.SQLite.EF6" />
</providers>
</entityFramework>
<connectionStrings>
<add name="InternalDbContext" connectionString="Data Source=.\testdb.sqlite" providerName="System.Data.SQLite.EF6" />
</connectionStrings>
<system.data>
<DbProviderFactories>
<remove invariant="System.Data.SQLite.EF6" />
<add name="SQLite Data Provider" invariant="System.Data.SQLite.EF6" description="Data Provider for SQLite" type="System.Data.SQLite.SQLiteFactory, System.Data.SQLite" />
</DbProviderFactories>
</system.data>
</configuration>
If anyone could point me to the right direction, that'd be fantastic, thanks so much
Nick
Your ./bin/Debug/ folder should contain a copy of your testdb.sqlite DB. That should have the changes.
I'm trying to create a MySql Db with EF5 , so I have my dbSet and My SqlContext class, but when I run the program throws this exception
I have this code in my App.config
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
</entityFramework>
<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=6.7.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
<connectionStrings>
<add name="ConnectionStringName" connectionString="server=localhost;Database=auth;uid=root;pwd=1234;" providerName="MySql.Data.MySqlClient" />
</connectionStrings>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="MySql.Data" publicKeyToken="c5687fc88969c44d" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-6.7.4.0" newVersion="6.7.4.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
and MySqlContext.cs
public class MySqlContext : System.Data.Entity.DbContext
{
public System.Data.Entity.DbSet<LoginModel> LoginModel { get; set; }
//public System.Data.Entity.DbSet<Roles> Roles { get; set; }
public MySqlContext()
: base("ConnectionStringName")
{ }
}
I'm using Entity Framework 5 , MySqlConector 6.7.4.0, Visual Studio 2012. Hope you guys can help me with this!
I found the answer with the post that user2453734 pointed EF5 Getting this error message: Model compatibility cannot be checked because the database does not contain model metadata and made a changes in the SetInitializer in Program.cs and I changed
this:
Database.SetInitializer(new DropCreateDatabaseIfModelChanges<MySqlContext>());
into this:
Database.SetInitializer<MySqlContext>(new DropCreateDatabaseIfModelChanges<MySqlContext>());
now it works!
After upgrading from EF 5 to EF 6.0.2 I'm getting this error when executing the Update-Database command from the Package Manager Console:
Could not load file or assembly 'System.Web.Helpers, Version=3.0.0.0,
Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its
dependencies. The system cannot find the file specified.
Everything worked just fine before the upgrade.
This is my app.config:
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
</configSections>
<connectionStrings>
<add name="DefaultConnection" connectionString="Data Source=.;Initial Catalog=aspnet-CodeFirst-Test;Integrated Security=SSPI;" providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web>
<roleManager enabled="true" defaultProvider="SimpleRoleProvider">
<providers>
<clear />
<add name="SimpleRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData" />
</providers>
</roleManager>
<membership defaultProvider="SimpleMembershipProvider">
<providers>
<clear />
<add name="SimpleMembershipProvider" type="WebMatrix.WebData.SimpleMembershipProvider, WebMatrix.WebData" />
</providers>
</membership>
</system.web>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<qualifyAssembly partialName="WebMatrix.WebData" fullName="WebMatrix.WebData, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</assemblyBinding>
</runtime>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
</providers>
</entityFramework>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1" />
</startup>
This is my Configuration.cs file:
public Configuration()
{
Database.SetInitializer<DataContext>(new DropCreateDatabaseAlways<DataContext>());
AutomaticMigrationsEnabled = true;
AutomaticMigrationDataLossAllowed = true;
}
protected override void Seed(DataContext context)
{
// This method will be called after migrating to the latest version.
// You can use the DbSet<T>.AddOrUpdate() helper extension method
// to avoid creating duplicate seed data. E.g.
//
// context.People.AddOrUpdate(
// p => p.FullName,
// new Person { FullName = "Andrew Peters" },
// new Person { FullName = "Brice Lambson" },
// new Person { FullName = "Rowan Miller" }
// );
//
SeedMembership(context);
}
I read that SimpleMembershipProvider got 'replaced' with Identity. Not sure if that is related to this error. But if anyone knows a tutorial how to do the migration, I'd love to have a link of that.
Also the database layer is a class lib project. There is no MVC installed in there.
Try adding this to your web.config under runtime section:
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
And System.Web.Helpers should be referenced from your project as well