Question

我有这个问题，我在服务器中部署了我的WCF和WF服务，并且我正确配置了我的WF。但是，我遇到了一个奇怪的错误，每当我检查我的工作流服务时，它就会抛出“系统无法找到指定的文件”。但每当我测试我的WCF服务时，它都会正确显示。

下面是错误的堆栈跟踪。

[Win32Exception (0x80004005): The system cannot find the file specified]

[SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)]
   System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5296071
   System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +558
   System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover) +5308555
   System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) +145
   System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) +920
   System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) +307
   System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions) +434
   System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +225
   System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) +37
   System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnectionOptions userOptions) +558
   System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnectionOptions userOptions) +67
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +1052
   System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +78
   System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +167
   System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +143
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +83
   System.Data.SqlClient.SqlConnection.Open() +96
   System.Activities.DurableInstancing.SqlCommandAsyncResult.StartCommandInternal(Boolean synchronous) +566
   System.Activities.DurableInstancing.SqlWorkflowInstanceStoreAsyncResult.StartOperation() +332

[InstancePersistenceCommandException: The execution of the InstancePersistenceCommand named {urn:schemas-microsoft-com:System.Activities.Persistence/command}CreateWorkflowOwner was interrupted by an error.]
   System.Runtime.AsyncResult.End(IAsyncResult result) +495736
   System.Runtime.DurableInstancing.InstancePersistenceContext.OuterExecute(InstanceHandle initialInstanceHandle, InstancePersistenceCommand command, Transaction transaction, TimeSpan timeout) +73
   System.Runtime.DurableInstancing.InstanceStore.Execute(InstanceHandle handle, InstancePersistenceCommand command, TimeSpan timeout) +74
   System.ServiceModel.Activities.Dispatcher.DurableInstanceManager.Open(TimeSpan timeout) +310

[CommunicationException: The InstanceStore could not be initialized.]
   System.ServiceModel.Activities.Dispatcher.DurableInstanceManager.Open(TimeSpan timeout) +409
   System.ServiceModel.Activities.WorkflowServiceHost.AfterInitializeRuntime(TimeSpan timeout) +21
   System.ServiceModel.ServiceHostBase.OnOpen(TimeSpan timeout) +80
   System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout) +310
   System.ServiceModel.Channels.CommunicationObject.Open() +36
   System.ServiceModel.HostingManager.ActivateService(ServiceActivationInfo serviceActivationInfo, EventTraceActivity eventTraceActivity) +91
   System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) +598

[ServiceActivationException: The service '/TestHost/WorkflowService.svc' cannot be activated due to an exception during compilation.  The exception message is: The InstanceStore could not be initialized..]
   System.Runtime.AsyncResult.End(IAsyncResult result) +495736
   System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +178
   System.ServiceModel.Activation.ServiceHttpModule.EndProcessRequest(IAsyncResult ar) +348782
   System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +9662417

希望你能解释这个问题。谢谢！

Answer 1

从堆栈跟踪看起来，您无法连接到用于InstanceStore的SQL Server。

Answer 2

我发现无法连接的原因是因为我连接的是错误的InstanceStore。改变了那里的配置，它工作正常。

WF4服务：系统找不到指定的文件

2 个答案: