Fatal编程技术网
  • csharp/
  • C# MVC DB迁移：方法或操作未实现？

C# MVC DB迁移：方法或操作未实现？

c# asp.net-mvc oracle entity-framework

C# MVC DB迁移：方法或操作未实现？,c#,asp.net-mvc,oracle,entity-framework,odp.net,C#,Asp.net Mvc,Oracle,Entity Framework,Odp.net,我已经成功地使用MVC5/EF6创建了一个InventoryTracking应用程序，使用代码优先迁移来填充我的LocalDB文件中的一些测试数据。我现在正试图修改应用程序以使用Oracle DB，在该数据库中，我创建了与本地DB文件中驻留的表相同的表 经过大量的挖掘，我得到了为我的VS2013下载的Oracle开发工具（Zip文件：odtwithodadac121021）。然后，我使用NUGET安装了Oracle.ManagedDataAccess，这样它就可以与EF6一起使用了（显然，从一年

我已经成功地使用MVC5/EF6创建了一个InventoryTracking应用程序，使用代码优先迁移来填充我的LocalDB文件中的一些测试数据。我现在正试图修改应用程序以使用Oracle DB，在该数据库中，我创建了与本地DB文件中驻留的表相同的表

经过大量的挖掘，我得到了为我的VS2013下载的
Oracle开发工具
（Zip文件：
odtwithodadac121021
）。然后，我使用NUGET安装了Oracle.ManagedDataAccess，这样它就可以与EF6一起使用了（显然，从一年前的大多数文章来看，Oracle.DataAccess只与EF5一起使用）

我的Web.Config如下所示：

<?xml version="1.0" encoding="utf-8"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=301880
  -->
<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" />
  <sectionGroup name="elmah">
      <section name="security" requirePermission="false" type="Elmah.SecuritySectionHandler, Elmah" />
      <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" />
      <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah" />
      <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah" />
    </sectionGroup>
  <section name="oracle.manageddataaccess.client" type="OracleInternal.Common.ODPMSectionHandler, Oracle.ManagedDataAccess, Version=4.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342" />
  </configSections>
  <connectionStrings>
      <add name="Default" providerName="Oracle.ManagedDataAccess.Client" connectionString="DATA SOURCE=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=host_123)(PORT=1234)))(CONNECT_DATA=(SID=hostprd)(SERVER=DEDICATED)));MIN POOL SIZE=3;PASSWORD=123_syst;PERSIST SECURITY INFO=True;USER ID=Userid; Connection Lifetime=16; Connection Timeout=8" />
    <!--<add name="InventoryTrackerContext" connectionString="Data Source=(LocalDb)\v11.0;AttachDbFilename=|DataDirectory|\InventoryTrackerDBDev-4.mdf;Initial Catalog=InventoryTrackerDBDev-4;Integrated Security=True" providerName="System.Data.SqlClient" />-->
  </connectionStrings>
  <appSettings>
      <add key="DefaultConnection" value="Default" />
    <add key="webpages:Version" value="3.0.0.0" />
    <add key="webpages:Enabled" value="false" />
    <add key="ClientValidationEnabled" value="true" />
    <add key="UnobtrusiveJavaScriptEnabled" value="true" />
    <add key="MvcSiteMapProvider_IncludeAssembliesForScan" value="InventoryTracker" />
    <add key="MvcSiteMapProvider_UseExternalDIContainer" value="false" />
    <add key="MvcSiteMapProvider_ScanAssembliesForSiteMapNodes" value="true" />
  </appSettings>
  <system.web>
    <!-- Active Directory Authentication - http://www.asp.net/mvc/overview/older-versions-1/security/authenticating-users-with-windows-authentication-cs -->
    <authentication mode="Windows" />
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
    <httpModules>
      <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Extensibility.Web.RequestTracking.WebRequestTrackingModule, Microsoft.ApplicationInsights.Extensibility.Web" />
    <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /><add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" /><add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" /></httpModules>
    <pages>
      <namespaces>
        <add namespace="GridMvc" />
        <add namespace="MvcSiteMapProvider.Web.Html" />
        <add namespace="MvcSiteMapProvider.Web.Html.Models" />
      </namespaces>
    </pages>
  </system.web>
  <system.webServer>
      <!--
      http errors allows us to override default errors.
      errorMode="Custom" means that IIS will always serve our custom pages.
      if you want to see details while in develoment mode, set to DetailedLocalOnly.
      for this demo, we have it set to Custom.
    -->
      <httpErrors errorMode="Custom" existingResponse="Replace">
          <remove statusCode="404" />
          <remove statusCode="500" />
          <error statusCode="404" responseMode="ExecuteURL" path="/Error/NotFound" />
          <error statusCode="500" responseMode="ExecuteURL" path="/Error/Error" />
      </httpErrors>  
    <modules>
      <remove name="FormsAuthentication" />
      <remove name="ApplicationInsightsWebTracking" />
      <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Extensibility.Web.RequestTracking.WebRequestTrackingModule, Microsoft.ApplicationInsights.Extensibility.Web" preCondition="managedHandler" />
      <remove name="UrlRoutingModule-4.0" />
      <add name="UrlRoutingModule-4.0" type="System.Web.Routing.UrlRoutingModule" />
      <remove name="BundleModule" />
      <add name="BundleModule" type="System.Web.Optimization.BundleModule" />
    <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" preCondition="managedHandler" /><add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" preCondition="managedHandler" /><add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" preCondition="managedHandler" /></modules>
    <validation validateIntegratedModeConfiguration="false" />
  </system.webServer>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-5.2.0.0" newVersion="5.2.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <assemblyIdentity name="WebMatrix.Data" publicKeyToken="31bf3856ad364e35" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
      <dependentAssembly>
        <publisherPolicy apply="no" />
        <assemblyIdentity name="Oracle.ManagedDataAccess" publicKeyToken="89b483f429c47342" culture="neutral" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
  <entityFramework>
    <contexts>
      <context type="InventoryTracker.DAL.InventoryTrackerContext, InventoryTracker">
        <databaseInitializer type="InventoryTracker.DAL.InventoryInitializer, InventoryTracker" />
      </context>
    </contexts>
    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
      <parameters>
        <parameter value="mssqllocaldb" />
      </parameters>
    </defaultConnectionFactory>
    <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>
  <elmah>
    <!--
        See http://code.google.com/p/elmah/wiki/SecuringErrorLogPages for 
        more information on remote access and securing ELMAH.
    -->
    <security allowRemoteAccess="false" />
  </elmah><location path="elmah.axd" inheritInChildApplications="false">
    <system.web>
      <httpHandlers>
        <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
      </httpHandlers>
      <!-- 
        See http://code.google.com/p/elmah/wiki/SecuringErrorLogPages for 
        more information on using ASP.NET authorization securing ELMAH.

      <authorization>
        <allow roles="admin" />
        <deny users="*" />  
      </authorization>
      -->
    </system.web>
    <system.webServer>
      <handlers>
        <add name="ELMAH" verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" preCondition="integratedMode" />
      </handlers>
    </system.webServer>
  </location>
  <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>
  <oracle.manageddataaccess.client>
    <version number="*">
      <dataSources>
        <dataSource alias="SampleDataSource" descriptor="(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL))) " />
      </dataSources>
    </version>
  </oracle.manageddataaccess.client>
</configuration>
库存初始值设定项：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using InventoryTracker.Models;
using System.Data.Entity;
using System.Data.Entity.ModelConfiguration.Conventions;
using InventoryTracker.DAL;
using Oracle.ManagedDataAccess.Client;
using System.Configuration;

namespace InventoryTracker.DAL
{
    public class InventoryTrackerContext : DbContext
    {
        public InventoryTrackerContext()
            //: base("InventoryTrackerContext")
            : base( new OracleConnection(ConfigurationManager.ConnectionStrings["Default"].ConnectionString), true)
        {

        }

        public DbSet<INV_Assets> INV_Assets { get; set; }
        public DbSet<INV_Models> INV_Models { get;set; }
        public DbSet<INV_Manufacturers> INV_Manufacturers { get;set; }
        public DbSet<INV_Types> INV_Types { get; set; }
        public DbSet<INV_Locations> INV_Locations { get; set; }
        public DbSet<INV_Vendors> INV_Vendors { get; set; }
        public DbSet<INV_Statuses> INV_Statuses { get; set; }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
             modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
             modelBuilder.Entity<INV_Assets>().MapToStoredProcedures();
        }

        public System.Data.Entity.DbSet<InventoryTracker.Models.INV_Owners> INV_Owners { get; set; }

        public System.Data.Entity.DbSet<InventoryTracker.Models.INV_AssetsHistory> INV_AssetsHistory { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using InventoryTracker.Models;
using InventoryTracker.DAL;
using WebMatrix.WebData;

namespace InventoryTracker.DAL
{
    public class InventoryInitializer : System.Data.Entity.DropCreateDatabaseIfModelChanges<InventoryTrackerContext>
    {
        InventoryTrackerContext context = new InventoryTrackerContext();

        protected override void Seed(InventoryTrackerContext context)
        {
            List<INV_Locations> invLocs = getLocations();
            invLocs.ForEach(s => context.INV_Locations.Add(s));
            List<INV_Manufacturers> invManufacturers = getManufacturers();
            invManufacturers.ForEach(s => context.INV_Manufacturers.Add(s));
            List<INV_Models> invModels = getModels();
            invModels.ForEach(s => context.INV_Models.Add(s));
            List<INV_Statuses> invStatuses = getStatuses();
            invStatuses.ForEach(s => context.INV_Statuses.Add(s));
            List<INV_Types> invTypes = getTypes();
            invTypes.ForEach(s => context.INV_Types.Add(s));
            List<INV_Vendors> invVendors = getVendors();
            invVendors.ForEach(s => context.INV_Vendors.Add(s));

            List<INV_Assets> invAssets = getAssets();
            invAssets.ForEach(s => context.INV_Assets.Add(s));

            context.SaveChanges();
        }

        // SEED CODE THAT DOESN'T APPEAR TO RUN? THIS FILE IS REFERENCED IN WEB.CONFIG
    }
}

namespace InventoryTracker.Migrations
{
    using System;
    using System.Collections.Generic;
    using System.Data.Entity;
    using System.Data.Entity.Migrations;
    using System.Linq;
    using System.Web;
    using System.Globalization;
    using InventoryTracker.Models;
    using InventoryTracker.DAL;
    using WebMatrix.WebData;

    internal sealed class Configuration : DbMigrationsConfiguration<InventoryTracker.DAL.InventoryTrackerContext>
    {
        public Configuration()
        {
            AutomaticMigrationsEnabled = false;
        }

        protected override void Seed(InventoryTracker.DAL.InventoryTrackerContext context)
        {
List<INV_Locations> invLocs = getLocations();
            context.INV_Locations.AddRange(invLocs);
            context.SaveChanges();
            List<INV_Manufacturers> invManufacturers = getManufacturers();
            context.INV_Manufacturers.AddRange(invManufacturers);
            context.SaveChanges();
            List<INV_Models> invModels = getModels();
            context.INV_Models.AddRange(invModels);
            context.SaveChanges();
            List<INV_Statuses> invStatuses = getStatuses();
            context.INV_Statuses.AddRange(invStatuses);

            context.SaveChanges();

            List<INV_Types> invTypes = getTypes();
            context.INV_Types.AddRange(invTypes);
            context.SaveChanges();
            List<INV_Vendors> invVendors = getVendors();
            context.INV_Vendors.AddRange(invVendors);

            context.SaveChanges();

            List<INV_Assets> invAssets = getAssets();
            context.INV_Assets.AddRange(invAssets);

            List<INV_AssetsHistory> invAssetsHistory = getAssetHistories();
            context.INV_AssetsHistory.AddRange(invAssetsHistory);

            context.SaveChanges();
        }

        // Various GET() Code, this is where the Seeding DOES Occur as opposed to file above.
}
当我在Web.config中为
InventoryTrackerContext
定义了连接字符串后，我可以简单地创建新迁移（
addmigration InitialCreate
），然后运行（
updatedatabase
）以使用我在Configuration.cs中指定的数据为本地数据库文件种子

现在，我试图使用我的
ORACLE
连接
[“Default”]
并通过类似的上下文进行访问，我遇到了一些问题。我创建了一个新的迁移，但当我尝试运行（
更新数据库
）时，我收到以下消息：

PM> update-database
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Applying explicit migrations: [201503251604557_InitialCreate].
Applying explicit migration: 201503251604557_InitialCreate.
System.NotImplementedException: The method or operation is not implemented.
   at Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.Generate(CreateProcedureOperation createProcedureOperation)
   at CallSite.Target(Closure , CallSite , OracleMigrationSqlGenerator , Object )
   at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0,T1](CallSite site, T0 arg0, T1 arg1)
   at CallSite.Target(Closure , CallSite , OracleMigrationSqlGenerator , Object )
   at Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.<GenerateStatements>b__2(Object op)
   at Oracle.ManagedDataAccess.EntityFramework.EntityUtils.Each[T](IEnumerable`1 ts, Action`1 action)
   at Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.GenerateStatements(IEnumerable`1 migrationOperations)
   at Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.Generate(IEnumerable`1 migrationOperations, String providerManifestToken)
   at System.Data.Entity.Migrations.DbMigrator.GenerateStatements(IList`1 operations, String migrationId)
   at System.Data.Entity.Migrations.Infrastructure.MigratorBase.GenerateStatements(IList`1 operations, String migrationId)
   at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, IEnumerable`1 systemOperations, Boolean downgrading, Boolean auto)
   at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
   at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
   at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
   at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
   at System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration)
   at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClassc.<Update>b__b()
   at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
   at System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
   at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
   at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration)
   at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run()
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
   at System.Data.Entity.Migrations.Design.ToolingFacade.Update(String targetMigration, Boolean force)
   at System.Data.Entity.Migrations.UpdateDatabaseCommand.<>c__DisplayClass2.<.ctor>b__0()
   at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
The method or operation is not implemented.

PM>更新数据库
指定'-Verbose'标志以查看应用于目标数据库的SQL语句。
应用显式迁移：[201503251604557\u InitialCreate]。
应用显式迁移：201503251604557_InitialCreate。
System.NotImplementedException：方法或操作未实现。
在Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.Generate（CreateProcedureOperation CreateProcedureOperation）
在CallSite.Target（闭包、CallSite、OracleMigrationSqlGenerator、对象）
在System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0，T1]（调用站点，T0 arg0，T1 arg1）
在CallSite.Target（闭包、CallSite、OracleMigrationSqlGenerator、对象）
位于Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.b_uu2（对象操作）
在Oracle.ManagedDataAccess.EntityFramework.EntityUtils.Each[T]（IEnumerable`1 ts，Action`1 Action）
位于Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.GenerateStatements（IEnumerable`1 migrationOperations）
在Oracle.ManagedDataAccess.EntityFramework.OracleMigrationSqlGenerator.Generate（IEnumerable`1 migrationOperations，String providerManifestToken）
位于System.Data.Entity.Migrations.DbMigrator.GenerateStatements（IList`1操作，字符串migrationId）
位于System.Data.Entity.Migrations.Infrastructure.MigratorBase.GenerateStatements（IList`1操作，字符串migrationId）
在System.Data.Entity.Migrations.Dbmigator.ExecuteOperations（字符串migrationId，XDocument targetModel，IEnumerable`1操作，IEnumerable`1系统操作，布尔降级，布尔自动）
位于System.Data.Entity.Migrations.DbMigrator.ApplyMigration（DbMigration migration，DbMigration lastMigration）
位于System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration（DbMigration migration，DbMigration lastMigration）
位于System.Data.Entity.Migrations.DbMigrator.Upgrade（IEnumerable`1 pendingMigrations，String targetMigrationId，String lastMigrationId）
位于System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade（IEnumerable`1 pendingMigrations，字符串targetMigrationId，字符串lastMigrationId）
位于System.Data.Entity.Migrations.Dbmigator.UpdateInternal（字符串targetMigration）
在System.Data.Entity.Migrations.DbMigrator.c__DisplayClassc.b__b（）中
位于System.Data.Entity.Migrations.Dbmigator.EnsureDatabaseExists（操作必须成功才能访问数据库）
位于System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists（操作必须成功才能使用数据库）
位于System.Data.Entity.Migrations.DbMigrator.Update（字符串targetMigration）
位于System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update（字符串targetMigration）
在System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run（）中
在System.AppDomain.DoCallBack（CrossAppDomainDelegate callBackDelegate）处
在System.AppDomain.DoCallBack（CrossAppDomainDelegate callBackDelegate）处
位于System.Data.Entity.Migrations.Design.ToolingFacade.Run（BaseRunner）
位于System.Data.Entity.Migrations.Design.ToolingFacade.Update（字符串targetMigration，布尔力）
在System.Data.Entity.Migrations.UpdateDatabaseCommand.c__DisplayClass2.b__0（）中
位于System.Data.Entity.Migrations.MigrationsDomainCommand.Execute（操作命令）
未实现该方法或操作。
如果我尝试运行应用程序…？

请检查您的应用程序是否遵循asp.net Core 2.0代码，我还会在
db.Table.ToList（）上收到相同的错误消息：


我的问题发生在我的program.cs文件中。
看看迁移的Up（）方法中有什么，或者您可以生成一个脚本（更新数据库-脚本），然后在SQL Developer中尝试，看看Oracle不喜欢什么。我遇到了一些数据类型不匹配的问题。您解决了这个问题吗？因为我也有这个问题。