Question

我正在使用EntityFramework Core使用Oracle.EntityFrameworkCore(2.18.0-beta3)进行配置和操作数据，但是收到了"OracleException: ORA-00942: table or view does not exist"。

Oracle.EntityFrameworkCore(2.18.0-beta3)正在工作，因为我可以使用“带有实体框架的带有视图的MVC控制器”来搭建一个新的Controller，该控制器将创建和编辑Oracle表（已创建Clients和IdentityResources Controllers）。

Startup.cs ConfigureServices包含以下配置：

var builder = services.AddIdentityServer(options =>
        {
            options.Events.RaiseErrorEvents = true;
            options.Events.RaiseInformationEvents = true;
            options.Events.RaiseFailureEvents = true;
            options.Events.RaiseSuccessEvents = true;
        })
              // this adds the config data from DB (clients, resources)
              .AddConfigurationStore(options =>
              {
                  options.ConfigureDbContext = b =>
                      b.UseOracle(connectionString);

              })
              .AddOperationalStore(options =>
              {
                  options.ConfigureDbContext = b =>
                      b.UseOracle(connectionString);
                  options.EnableTokenCleanup = true;
              });

将显示“欢迎使用IdentityServer4（版本2.4.0.0）”页面，并将其路由到控制器选项，但是“发现文档”（http://localhost:5000/.well-known/openid-configuration）返回 "OracleException: ORA-00942: table or view does not exist"。

Answer 1

使其与Oracle.EntityFrameworkCore（2.19.0-beta4）一起使用。一路上我学到了几件事：

1）Oracle的许多实例都遵循SQL-92标准，该标准将对象（包括表名和列名）限制为30个字符。默认的IdentityServer4“客户”表中的几个列名超过30个字符。 EF迁移已修改，以适应列名字符限制。

b.Property<bool>("AlwaysIncludeUserClaimsInIdToken")
        .HasColumnName("AlwaysIncludeUserClaimsInIdTok");

2）Oracle处理增量主键的方式与SQLServer不同。 EF迁移Oracle:ValueGenerationStrategy属性用于所有主键。

b.Property<int>("Id")
        .ValueGeneratedOnAdd()
        .HasAnnotation("Oracle:ValueGenerationStrategy", OracleValueGenerationStrategy.IdentityColumn);

3）如果Oracle表名全部以大写形式创建，则它们不区分大小写。如果它们是大小写混合的，则区分大小写。我能够使用默认的IdentityServer4表名与IdentityServer4一起使用Oracle。但是，我选择通过将EF属性更改为大写来将表名更改为全部大写：

migrationBuilder.CreateTable(name: "IS4_CLIENT",

b.ToTable("IS4_CLIENT"), 

principalTable: "IS4_CLIENT",

IdentityServer4配置存储属性需要更改，以匹配更改后的大写表名称。以下是用于配置IdentityServer4 AddConfigurationStore和AddOperationalStore的扩展类。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Reflection;
using Microsoft.Extensions.DependencyInjection;
using Oracle.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using IdentityServer4.EntityFramework.Entities;

namespace is4ef.Extensions
{
    public static class Is4BuilderExtensions
    {
        public static string IdentityResource { get; private set; }

        public static IIdentityServerBuilder AddIs4ConfigurationStore(
            this IIdentityServerBuilder builder, string connectionString)
        {

            string assemblyNamespace = typeof(Is4BuilderExtensions)
                .GetTypeInfo()
                .Assembly
                .GetName()
                .Name;

            builder
                .AddConfigurationStore(options => {
                    options.ConfigureDbContext = b =>
                        b.UseOracle(connectionString, optionsBuilder =>
                            optionsBuilder.MigrationsAssembly(assemblyNamespace)
                                .UseOracleSQLCompatibility("12"));
                    options.DefaultSchema = "X13663";
                    options.ApiClaim.Name = "IS4_AIPCLAIM";
                    options.ApiResourceProperty.Name = "IS4_APIPROPERTY";
                    options.ApiResource.Name = "IS4_APIRESOURCE";
                    options.ApiScopeClaim.Name = "IS4_APISCOPECLAIM";
                    options.ApiScope.Name = "IS4_APISCOPE";
                    options.ApiSecret.Name = "IS4_APISECRET";
                    options.ClientClaim.Name = "IS4_CLIENTCLAIM";
                    options.ClientCorsOrigin.Name = "IS4_CLIENTCORSORIGIN";
                    options.ClientGrantType.Name = "IS4_CLIENTGRANTTYPE";
                    options.ClientIdPRestriction.Name = "IS4_CLIENTIDPRESTRICTION";
                    options.ClientPostLogoutRedirectUri.Name = "IS4_CLIENTPOSTLOGOUTREDIRECTURI";
                    options.ClientProperty.Name = "IS4_CLIENTPROPERTY";
                    options.ClientRedirectUri.Name = "IS4_CLIENTREDIRECTURI";
                    options.Client.Name = "IS4_CLIENT";
                    options.ClientScopes.Name = "IS4_CLIENTSCOPE";
                    options.ClientSecret.Name = "IS4_CLIENTSECRET";
                    options.IdentityClaim.Name = "IS4_IDENTITYCLAIM";
                    options.IdentityResourceProperty.Name = "IS4_IDENTITYPROPERTY";
                    options.IdentityResource.Name = "IS4_IDENTITYRESOURCE";
                })
                .AddOperationalStore(options => {
                    options.ConfigureDbContext = b =>
                        b.UseOracle(connectionString, optionsBuilder =>
                            optionsBuilder.MigrationsAssembly(assemblyNamespace)
                                .UseOracleSQLCompatibility("12"));
                    options.DefaultSchema = "X13663";
                    options.DeviceFlowCodes.Name = "IS4_DEVICECODE";
                    options.PersistedGrants.Name = "IS4_PERSISTEDGRANT";
            });
            return builder;
        }
    }
}

使用Oracle.EntityFrameworCore（2.18.0-beta3）的AddConfigurationStore OracleException：ORA-00942：表或视图不存在

1 个答案: