Question

我正在使用WF 3.5，在启动几个WorkflowRuntimes的过程中，我有时会遇到以下异常：

System.Data.SqlClient.SqlException: Transaction (Process ID 108) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
   at System.Data.SqlClient.SqlDataReader.HasMoreRows()
   at System.Data.SqlClient.SqlDataReader.ReadInternal(Boolean setTimeout)
   at System.Workflow.Runtime.Hosting.PersistenceDBAccessor.RetrieveNonblockingInstanceStateIds(Guid ownerId, DateTime ownedUntil)
   at System.Workflow.Runtime.Hosting.SqlWorkflowPersistenceService.RecoverRunningWorkflowInstances()
   at System.Workflow.Runtime.Hosting.SqlWorkflowPersistenceService.OnStarted()
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at System.Workflow.Runtime.WorkflowRuntime.StartRuntime()

我认为运行多个WorkflowRuntimes是可以的。我正在加倍，因为我正在将工作负载分配给不同的服务器，但所有服务器都在同一个数据库中。有什么想法吗？

Answer 1

找到了答案！

我应该使用启用锁定的SqlWorkflowPersistenceService构造函数：

SqlWorkflowPersistenceService构造函数（String，Boolean，TimeSpan，TimeSpan） http://msdn.microsoft.com/en-us/library/ms608171(v=VS.90).aspx

有关详细信息：https://connect.microsoft.com/wf/feedback/details/541240/sqlexception-deadlock-in-persistencedbaccessor-retrievenonblockinginstancestateids

使用SqlWorkflowPersistenceService时，在PersistenceDBAccessor.RetrieveNonblockingInstanceStateIds中获取SqlException死锁

1 个答案: