diff --git a/framework/test/Volo.Abp.MongoDB.Tests/Volo/Abp/MongoDB/AbpMongoDbTestModule.cs b/framework/test/Volo.Abp.MongoDB.Tests/Volo/Abp/MongoDB/AbpMongoDbTestModule.cs
index e2c9e5facc..db61a0b9bf 100644
--- a/framework/test/Volo.Abp.MongoDB.Tests/Volo/Abp/MongoDB/AbpMongoDbTestModule.cs
+++ b/framework/test/Volo.Abp.MongoDB.Tests/Volo/Abp/MongoDB/AbpMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -14,15 +15,17 @@ namespace Volo.Abp.MongoDB
         )]
     public class AbpMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
 
             context.Services.AddMongoDbContext<TestAppMongoDbContext>(options =>
@@ -31,10 +34,5 @@ namespace Volo.Abp.MongoDB
                 options.AddRepository<City, CityRepository>();
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/audit-logging/test/Volo.Abp.AuditLogging.MongoDB.Tests/Volo/Abp/AuditLogging/MongoDB/AbpAuditLoggingMongoDbTestModule.cs b/modules/audit-logging/test/Volo.Abp.AuditLogging.MongoDB.Tests/Volo/Abp/AuditLogging/MongoDB/AbpAuditLoggingMongoDbTestModule.cs
index dcfc69866e..15eea88549 100644
--- a/modules/audit-logging/test/Volo.Abp.AuditLogging.MongoDB.Tests/Volo/Abp/AuditLogging/MongoDB/AbpAuditLoggingMongoDbTestModule.cs
+++ b/modules/audit-logging/test/Volo.Abp.AuditLogging.MongoDB.Tests/Volo/Abp/AuditLogging/MongoDB/AbpAuditLoggingMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -11,21 +12,18 @@ namespace Volo.Abp.AuditLogging.MongoDB
     )]
     public class AbpAuditLoggingMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
\ No newline at end of file
diff --git a/modules/background-jobs/test/Volo.Abp.BackgroundJobs.MongoDB.Tests/Volo/Abp/BackgroundJobs/MongoDB/BackgroundJobsMongoDbTestModule.cs b/modules/background-jobs/test/Volo.Abp.BackgroundJobs.MongoDB.Tests/Volo/Abp/BackgroundJobs/MongoDB/BackgroundJobsMongoDbTestModule.cs
index bcbc591a0f..f03590df79 100644
--- a/modules/background-jobs/test/Volo.Abp.BackgroundJobs.MongoDB.Tests/Volo/Abp/BackgroundJobs/MongoDB/BackgroundJobsMongoDbTestModule.cs
+++ b/modules/background-jobs/test/Volo.Abp.BackgroundJobs.MongoDB.Tests/Volo/Abp/BackgroundJobs/MongoDB/BackgroundJobsMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -11,21 +12,18 @@ namespace Volo.Abp.BackgroundJobs.MongoDB
         )]
     public class BackgroundJobsMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
\ No newline at end of file
diff --git a/modules/blogging/test/Volo.Blogging.MongoDB.Tests/Volo/Blogging/MongoDB/BloggingMongoDBTestModule.cs b/modules/blogging/test/Volo.Blogging.MongoDB.Tests/Volo/Blogging/MongoDB/BloggingMongoDBTestModule.cs
index 6000d7e792..5cbb3cf9e0 100644
--- a/modules/blogging/test/Volo.Blogging.MongoDB.Tests/Volo/Blogging/MongoDB/BloggingMongoDBTestModule.cs
+++ b/modules/blogging/test/Volo.Blogging.MongoDB.Tests/Volo/Blogging/MongoDB/BloggingMongoDBTestModule.cs
@@ -1,4 +1,5 @@
-using Mongo2Go;
+using System;
+using Mongo2Go;
 using Volo.Abp;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -11,21 +12,18 @@ namespace Volo.Blogging.MongoDB
     )]
     public class BloggingMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
\ No newline at end of file
diff --git a/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/MongoDB/DocsMongoDBTestModule.cs b/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/MongoDB/DocsMongoDBTestModule.cs
index 29f2df647d..5cac4812c9 100644
--- a/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/MongoDB/DocsMongoDBTestModule.cs
+++ b/modules/docs/test/Volo.Docs.MongoDB.Tests/Volo/Docs/MongoDB/DocsMongoDBTestModule.cs
@@ -1,4 +1,5 @@
-using Mongo2Go;
+using System;
+using Mongo2Go;
 using Volo.Abp;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -11,21 +12,18 @@ namespace Volo.Docs.MongoDB
     )]
     public class DocsMongoDBTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/feature-management/test/Volo.Abp.FeatureManagement.MongoDB.Tests/Volo/Abp/FeatureManagement/MongoDB/AbpFeatureManagementMongoDbTestModule.cs b/modules/feature-management/test/Volo.Abp.FeatureManagement.MongoDB.Tests/Volo/Abp/FeatureManagement/MongoDB/AbpFeatureManagementMongoDbTestModule.cs
index 6c39cf74ae..c223dbc107 100644
--- a/modules/feature-management/test/Volo.Abp.FeatureManagement.MongoDB.Tests/Volo/Abp/FeatureManagement/MongoDB/AbpFeatureManagementMongoDbTestModule.cs
+++ b/modules/feature-management/test/Volo.Abp.FeatureManagement.MongoDB.Tests/Volo/Abp/FeatureManagement/MongoDB/AbpFeatureManagementMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Mongo2Go;
+using System;
+using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
 
@@ -10,21 +11,18 @@ namespace Volo.Abp.FeatureManagement.MongoDB
         )]
     public class AbpFeatureManagementMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
\ No newline at end of file
diff --git a/modules/identity/test/Volo.Abp.Identity.MongoDB.Tests/Volo/Abp/Identity/MongoDB/AbpIdentityMongoDbTestModule.cs b/modules/identity/test/Volo.Abp.Identity.MongoDB.Tests/Volo/Abp/Identity/MongoDB/AbpIdentityMongoDbTestModule.cs
index 7228b07aa0..eeef9c6c93 100644
--- a/modules/identity/test/Volo.Abp.Identity.MongoDB.Tests/Volo/Abp/Identity/MongoDB/AbpIdentityMongoDbTestModule.cs
+++ b/modules/identity/test/Volo.Abp.Identity.MongoDB.Tests/Volo/Abp/Identity/MongoDB/AbpIdentityMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -13,21 +14,18 @@ namespace Volo.Abp.Identity.MongoDB
         )]
     public class AbpIdentityMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/identityserver/test/Volo.Abp.IdentityServer.MongoDB.Tests/Volo/Abp/IdentityServer/AbpIdentityServerMongoDbTestModule.cs b/modules/identityserver/test/Volo.Abp.IdentityServer.MongoDB.Tests/Volo/Abp/IdentityServer/AbpIdentityServerMongoDbTestModule.cs
index 53e4394b48..de03cf479a 100644
--- a/modules/identityserver/test/Volo.Abp.IdentityServer.MongoDB.Tests/Volo/Abp/IdentityServer/AbpIdentityServerMongoDbTestModule.cs
+++ b/modules/identityserver/test/Volo.Abp.IdentityServer.MongoDB.Tests/Volo/Abp/IdentityServer/AbpIdentityServerMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Mongo2Go;
+using System;
+using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Identity.MongoDB;
 using Volo.Abp.IdentityServer.MongoDB;
@@ -14,21 +15,18 @@ namespace Volo.Abp.IdentityServer
     )]
     public class AbpIdentityServerMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/permission-management/test/Volo.Abp.PermissionManagement.MongoDB.Tests/Volo/Abp/PermissionManagement/MongoDb/AbpPermissionManagementMongoDbTestModule.cs b/modules/permission-management/test/Volo.Abp.PermissionManagement.MongoDB.Tests/Volo/Abp/PermissionManagement/MongoDb/AbpPermissionManagementMongoDbTestModule.cs
index fdbf5dacd8..d36516b887 100644
--- a/modules/permission-management/test/Volo.Abp.PermissionManagement.MongoDB.Tests/Volo/Abp/PermissionManagement/MongoDb/AbpPermissionManagementMongoDbTestModule.cs
+++ b/modules/permission-management/test/Volo.Abp.PermissionManagement.MongoDB.Tests/Volo/Abp/PermissionManagement/MongoDb/AbpPermissionManagementMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Mongo2Go;
+using System;
+using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
 
@@ -9,21 +10,18 @@ namespace Volo.Abp.PermissionManagement.MongoDB
         typeof(AbpPermissionManagementTestBaseModule))]
     public class AbpPermissionManagementMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+                                    "Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/setting-management/test/Volo.Abp.SettingManagement.MongoDB.Tests/Volo/Abp/SettingManagement/MongoDB/AbpSettingManagementMongoDbTestModule.cs b/modules/setting-management/test/Volo.Abp.SettingManagement.MongoDB.Tests/Volo/Abp/SettingManagement/MongoDB/AbpSettingManagementMongoDbTestModule.cs
index 937181957e..01746f344d 100644
--- a/modules/setting-management/test/Volo.Abp.SettingManagement.MongoDB.Tests/Volo/Abp/SettingManagement/MongoDB/AbpSettingManagementMongoDbTestModule.cs
+++ b/modules/setting-management/test/Volo.Abp.SettingManagement.MongoDB.Tests/Volo/Abp/SettingManagement/MongoDB/AbpSettingManagementMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Mongo2Go;
+using System;
+using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
 
@@ -10,21 +11,18 @@ namespace Volo.Abp.SettingManagement.MongoDB
         )]
     public class AbpSettingManagementMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/tenant-management/test/Volo.Abp.TenantManagement.MongoDB.Tests/Volo/Abp/TenantManagement/MongoDb/AbpTenantManagementMongoDbTestModule.cs b/modules/tenant-management/test/Volo.Abp.TenantManagement.MongoDB.Tests/Volo/Abp/TenantManagement/MongoDb/AbpTenantManagementMongoDbTestModule.cs
index 8ed1b829db..f9fa2d0f73 100644
--- a/modules/tenant-management/test/Volo.Abp.TenantManagement.MongoDB.Tests/Volo/Abp/TenantManagement/MongoDb/AbpTenantManagementMongoDbTestModule.cs
+++ b/modules/tenant-management/test/Volo.Abp.TenantManagement.MongoDB.Tests/Volo/Abp/TenantManagement/MongoDb/AbpTenantManagementMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -11,21 +12,18 @@ namespace Volo.Abp.TenantManagement.MongoDB
         )]
     public class AbpTenantManagementMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/modules/users/test/Volo.Abp.Users.MongoDB.Tests/Volo/Abp/Users/MongoDB/AbpUsersMongoDbTestModule.cs b/modules/users/test/Volo.Abp.Users.MongoDB.Tests/Volo/Abp/Users/MongoDB/AbpUsersMongoDbTestModule.cs
index 65963cc6e6..f531bf4b3b 100644
--- a/modules/users/test/Volo.Abp.Users.MongoDB.Tests/Volo/Abp/Users/MongoDB/AbpUsersMongoDbTestModule.cs
+++ b/modules/users/test/Volo.Abp.Users.MongoDB.Tests/Volo/Abp/Users/MongoDB/AbpUsersMongoDbTestModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Mongo2Go;
 using Volo.Abp.Data;
 using Volo.Abp.Modularity;
@@ -11,23 +12,20 @@ namespace Volo.Abp.Users.MongoDB
         )]
     public class AbpUsersMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(IServiceCollection services)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
-            services.Configure<DbConnectionOptions>(options =>
+            Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString;
+                options.ConnectionStrings.Default = connectionString;
             });
 
             services.AddAssemblyOf<AbpUsersMongoDbTestModule>();
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
diff --git a/samples/BookStore-Angular-MongoDb/aspnet-core/test/Acme.BookStore.MongoDB.Tests/MongoDb/BookStoreMongoDbTestModule.cs b/samples/BookStore-Angular-MongoDb/aspnet-core/test/Acme.BookStore.MongoDB.Tests/MongoDb/BookStoreMongoDbTestModule.cs
index d45f3ea02f..7016591f7f 100644
--- a/samples/BookStore-Angular-MongoDb/aspnet-core/test/Acme.BookStore.MongoDB.Tests/MongoDb/BookStoreMongoDbTestModule.cs
+++ b/samples/BookStore-Angular-MongoDb/aspnet-core/test/Acme.BookStore.MongoDB.Tests/MongoDb/BookStoreMongoDbTestModule.cs
@@ -16,8 +16,8 @@ namespace Acme.BookStore.MongoDB
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
             var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
-                                   "BookStore_" +
-                                   Guid.NewGuid().ToString("N");
+                                    "Db_" +		
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
diff --git a/templates/app/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDb/MyProjectNameMongoDbTestModule.cs b/templates/app/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDb/MyProjectNameMongoDbTestModule.cs
index 7141e66167..dad85e765b 100644
--- a/templates/app/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDb/MyProjectNameMongoDbTestModule.cs
+++ b/templates/app/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDb/MyProjectNameMongoDbTestModule.cs
@@ -16,8 +16,8 @@ namespace MyCompanyName.MyProjectName.MongoDB
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
             var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
-                                   "MyProjectName_" +
-                                   Guid.NewGuid().ToString("N");
+                                    "Db_" +		
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
diff --git a/templates/module/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDB/MyProjectNameMongoDbTestModule.cs b/templates/module/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDB/MyProjectNameMongoDbTestModule.cs
index 71be56844c..32ac0074ef 100644
--- a/templates/module/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDB/MyProjectNameMongoDbTestModule.cs
+++ b/templates/module/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests/MongoDB/MyProjectNameMongoDbTestModule.cs
@@ -12,21 +12,18 @@ namespace MyCompanyName.MyProjectName.MongoDB
         )]
     public class MyProjectNameMongoDbTestModule : AbpModule
     {
-        private MongoDbRunner _mongoDbRunner;
+        private static readonly MongoDbRunner MongoDbRunner = MongoDbRunner.Start();
 
         public override void ConfigureServices(ServiceConfigurationContext context)
         {
-            _mongoDbRunner = MongoDbRunner.Start();
+            var connectionString = MongoDbRunner.ConnectionString.EnsureEndsWith('/') +
+									"Db_" +									
+                                    Guid.NewGuid().ToString("N");
 
             Configure<DbConnectionOptions>(options =>
             {
-                options.ConnectionStrings.Default = _mongoDbRunner.ConnectionString.EnsureEndsWith('/') + "MyProjectName";
+                options.ConnectionStrings.Default = connectionString;
             });
         }
-
-        public override void OnApplicationShutdown(ApplicationShutdownContext context)
-        {
-            _mongoDbRunner.Dispose();
-        }
     }
 }
\ No newline at end of file