Question

我使用Database First方法在MVC 5中开发了一个Web应用程序。托管应用程序时出现错误＆＃34;禁用在SQL Server中生成用户实例。使用sp_configure＆＃39;启用用户实例＆＃39;生成用户实例。＆＃34;

事情是，这只发生在我在服务器上托管应用程序时。在本地运行时没有错误。我不确定是什么导致此错误，因为我使用的是在线数据库连接，而不是本地mdf文件。根据我对此错误所做的研究，我只能找到人们使用本地数据库的示例。

下面是web.config连接字符串：

  <connectionStrings> 

<add name="DefaultConnection" providerName="System.Data.SqlClient" connectionString="Data Source=***.***.***.**,1434;Initial Catalog=tsp13amp_tsp136;User Id=******;Password=******;MultipleActiveResultSets=True;" />
<add name="TSPEntities" providerName="System.Data.EntityClient" connectionString="metadata=res://*/Models.TSPEntities.csdl|res://*/Models.TSPEntities.ssdl|res://*/Models.TSPEntities.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=***.***.***.**,1434;Initial Catalog=tsp13amp_tsp136;User Id=******;Password=******;MultipleActiveResultSets=True;App=EntityFramework&quot;" />

而堆栈跟踪似乎无法做出正面或反面：

 [SqlException (0x80131904): Generating user instances in SQL Server is disabled. Use sp_configure 'user instances enabled' to generate user instances.]
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +6568558
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +717
   System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +4515
   System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +84
   System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +53
   System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) +368
   System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) +6597311
   System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) +6597891
   System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) +942
   System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +816
   System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup, DbConnectionOptions userOptions) +61
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +953
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +6605639
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +233
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +278
   System.Data.SqlClient.SqlConnection.Open() +239
   System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +98

[HttpException (0x80004005): Unable to connect to SQL Server database.]
   System.Web.Management.SqlServices.GetSqlConnection(String server, String user, String password, Boolean trusted, String connectionString) +4572298
   System.Web.Management.SqlServices.SetupApplicationServices(String server, String user, String password, Boolean trusted, String connectionString, String database, String dbFileName, SqlFeatures features, Boolean install) +229
   System.Web.DataAccess.SqlConnectionHelper.CreateMdfFile(String fullFileName, String dataDir, String connectionString) +908

感谢您提供任何帮助。

Answer 1

可能在服务器上禁用此功能，使用数据库服务器上的以下脚本激活它：

EXEC sp_configure 'user instances enabled', 1;
RECONFIGURE;

Database First MVC App在托管时给出用户实例错误

1 个答案: