SQL Server,C#：事务回滚超时异常

我有一个奇怪的问题.我有一个.NET程序,我的进程逻辑在sql Server 2005数据库上需要一个长时间运行的事务(〜20分钟).没关系,因为没有人并行访问数据库.当出现问题时,应该回滚事务.

不频繁且没有任何可见的模式,我的DbTransaction对象上的Rollback()操作会引发sqlException：

Message: "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding."

StackTrace:
   at System.Data.sqlClient.sqlInternalConnection.OnError(sqlException exception,Boolean breakConnection)
   at System.Data.sqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
   at System.Data.sqlClient.TdsParserStateObject.ReadSniError(TdsParserStateObject stateObj,UInt32 error)
   at System.Data.sqlClient.TdsParserStateObject.ReadSni(DbAsyncResult asyncResult,TdsParserStateObject stateObj)
   at System.Data.sqlClient.TdsParserStateObject.ReadPacket(Int32 bytesExpected)
   at System.Data.sqlClient.TdsParserStateObject.ReadBuffer()
   at System.Data.sqlClient.TdsParserStateObject.ReadByte()
   at System.Data.sqlClient.TdsParser.Run(RunBehavior runBehavior,sqlCommand cmdHandler,sqlDataReader dataStream,BulkcopySimpleResultSet bulkcopyHandler,TdsParserStateObject stateObj)
   at System.Data.sqlClient.TdsParser.TdsExecuteTransactionManagerRequest(Byte[] buffer,TransactionManagerRequestType request,String transactionName,TransactionManagerIsolationLevel isoLevel,Int32 timeout,sqlInternalTransaction transaction,TdsParserStateObject stateObj,Boolean isDelegateControlRequest)
   at System.Data.sqlClient.sqlInternalConnectionTds.ExecuteTransactionYukon(TransactionRequest transactionRequest,IsolationLevel iso,sqlInternalTransaction internalTransaction,Boolean isDelegateControlRequest)
   at System.Data.sqlClient.sqlInternalConnectionTds.ExecuteTransaction(TransactionRequest transactionRequest,String name,Boolean isDelegateControlRequest)
   at System.Data.sqlClient.sqlInternalTransaction.Rollback()
   at System.Data.sqlClient.sqlTransaction.Rollback()

我不知道这是否真的是一个超时问题,因为这个代码有时候有时候不工作.此外,我知道的唯一超时是ConnectionTimeout和CommandTimeout,但显然这些不是这种情况下的问题.

有没有人有这个问题的想法？

非常感谢Matthias

解决方法

sql Server团队的Matt Neerincx在 MSDN forum question中解决了这个问题.奇怪的是,连接字符串的连接超时用于设置超时.他验证了他的源代码.