diff --git a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EShopOnAbp.OrderingService.EntityFrameworkCore.csproj b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EShopOnAbp.OrderingService.EntityFrameworkCore.csproj
index 4cc80b83..22746939 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EShopOnAbp.OrderingService.EntityFrameworkCore.csproj
+++ b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EShopOnAbp.OrderingService.EntityFrameworkCore.csproj
@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\EShopOnAbp.OrderingService.Domain\EShopOnAbp.OrderingService.Domain.csproj" />
-    <PackageReference Include="Volo.Abp.EntityFrameworkCore.SqlServer" Version="5.0.0-rc.1" />
+    <PackageReference Include="Volo.Abp.EntityFrameworkCore.PostgreSql" Version="5.0.0-rc.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceDbContextFactory.cs b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceDbContextFactory.cs
index 4ad9d674..6f0dc5d1 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceDbContextFactory.cs
+++ b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceDbContextFactory.cs
@@ -16,7 +16,12 @@ namespace EShopOnAbp.OrderingService.EntityFrameworkCore
             var configuration = BuildConfiguration();
 
             var builder = new DbContextOptionsBuilder<OrderingServiceDbContext>()
-                .UseSqlServer(configuration.GetConnectionString("Default"));
+                .UseNpgsql(
+                configuration.GetConnectionString(OrderingServiceDbProperties.ConnectionStringName),
+                b =>
+                {
+                    b.MigrationsHistoryTable("__OrderingService_Migrations");
+                });
 
             return new OrderingServiceDbContext(builder.Options);
         }
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceEntityFrameworkCoreModule.cs b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceEntityFrameworkCoreModule.cs
index 008e820c..c1042014 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceEntityFrameworkCoreModule.cs
+++ b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/EntityFrameworkCore/OrderingServiceEntityFrameworkCoreModule.cs
@@ -1,13 +1,13 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.EntityFrameworkCore;
-using Volo.Abp.EntityFrameworkCore.SqlServer;
+using Volo.Abp.EntityFrameworkCore.PostgreSql;
 using Volo.Abp.Modularity;
 
 namespace EShopOnAbp.OrderingService.EntityFrameworkCore
 {
     [DependsOn(
         typeof(OrderingServiceDomainModule),
-        typeof(AbpEntityFrameworkCoreSqlServerModule)
+        typeof(AbpEntityFrameworkCorePostgreSqlModule)
         )]
     public class OrderingServiceEntityFrameworkCoreModule : AbpModule
     {
@@ -29,7 +29,10 @@ namespace EShopOnAbp.OrderingService.EntityFrameworkCore
             {
                 /* The main point to change your DBMS.
                  * See also OrderingServiceMigrationsDbContextFactory for EF Core tooling. */
-                options.UseSqlServer();
+                options.UseNpgsql(b =>
+                {
+                    b.MigrationsHistoryTable("__OrderingService_Migrations");
+                });
             });
         }
     }
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211012121150_Initial.Designer.cs b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211125130659_Initial.Designer.cs
similarity index 73%
rename from services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211012121150_Initial.Designer.cs
rename to services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211125130659_Initial.Designer.cs
index 6a8184bf..d777f5c4 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211012121150_Initial.Designer.cs
+++ b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211125130659_Initial.Designer.cs
@@ -2,9 +2,9 @@
 using EShopOnAbp.OrderingService.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Migrations;
 using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 using Volo.Abp.EntityFrameworkCore;
 
 #nullable disable
@@ -12,18 +12,18 @@ using Volo.Abp.EntityFrameworkCore;
 namespace EShopOnAbp.OrderingService.Migrations
 {
     [DbContext(typeof(OrderingServiceDbContext))]
-    [Migration("20211012121150_Initial")]
+    [Migration("20211125130659_Initial")]
     partial class Initial
     {
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
         {
 #pragma warning disable 612, 618
             modelBuilder
-                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.SqlServer)
-                .HasAnnotation("ProductVersion", "6.0.0-rc.1.21452.10")
-                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.PostgreSql)
+                .HasAnnotation("ProductVersion", "6.0.0")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
 
-            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
 #pragma warning restore 612, 618
         }
     }
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211012121150_Initial.cs b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211125130659_Initial.cs
similarity index 100%
rename from services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211012121150_Initial.cs
rename to services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/20211125130659_Initial.cs
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/OrderingServiceDbContextModelSnapshot.cs b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/OrderingServiceDbContextModelSnapshot.cs
index 59bd1666..727a995f 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/OrderingServiceDbContextModelSnapshot.cs
+++ b/services/ordering/src/EShopOnAbp.OrderingService.EntityFrameworkCore/Migrations/OrderingServiceDbContextModelSnapshot.cs
@@ -2,8 +2,8 @@
 using EShopOnAbp.OrderingService.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
 using Volo.Abp.EntityFrameworkCore;
 
 #nullable disable
@@ -17,11 +17,11 @@ namespace EShopOnAbp.OrderingService.Migrations
         {
 #pragma warning disable 612, 618
             modelBuilder
-                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.SqlServer)
-                .HasAnnotation("ProductVersion", "6.0.0-rc.1.21452.10")
-                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+                .HasAnnotation("_Abp_DatabaseProvider", EfCoreDatabaseProvider.PostgreSql)
+                .HasAnnotation("ProductVersion", "6.0.0")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
 
-            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
 #pragma warning restore 612, 618
         }
     }
diff --git a/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/appsettings.json b/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/appsettings.json
index 450518aa..b83b13d0 100644
--- a/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/appsettings.json
+++ b/services/ordering/src/EShopOnAbp.OrderingService.HttpApi.Host/appsettings.json
@@ -18,8 +18,8 @@
   },
   "AllowedHosts": "*",
   "ConnectionStrings": {
-    "OrderingService": "Server=localhost,1434;Database=EShopOnAbp_Ordering;User Id=sa;password=myPassw0rd;MultipleActiveResultSets=true",
-    "AdministrationService": "Server=localhost,1434;Database=EShopOnAbp_Administration;User Id=sa;password=myPassw0rd;MultipleActiveResultSets=true"
+    "OrderingService": "User ID=postgres;Password=myPassw0rd;Host=localhost;Port=5432;Database=EShopOnAbp_Ordering;Pooling=false",
+    "AdministrationService": "User ID=postgres;Password=myPassw0rd;Host=localhost;Port=5432;Database=EShopOnAbp_Administration;Pooling=false;"
   },
   "StringEncryption": {
     "DefaultPassPhrase": "0f000WgRXnVk0704"