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这是我的 32 位 .net 应用程序连接到 sql server 时偶尔出现的随机错误。

System.ApplicationException: A device attached to the system is not functioning. (Exception from HRESULT: 0x8007001F)
   at System.Threading.TimerBase.AddTimerNative(Object state, UInt32 dueTime, UInt32 period, StackCrawlMark& stackMark)
   at System.Threading.TimerBase.AddTimer(TimerCallback callback, Object state, UInt32 dueTime, UInt32 period, StackCrawlMark& stackMark)
   at System.Threading.Timer..ctor(TimerCallback callback, Object state, Int32 dueTime, Int32 period)
   at System.Data.ProviderBase.DbConnectionPool.CreateCleanupTimer()
   at System.Data.ProviderBase.DbConnectionPool.Startup()
   at System.Data.ProviderBase.DbConnectionPoolGroup.GetConnectionPool(DbConnectionFactory connectionFactory)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnectionPool(DbConnection owningObject, DbConnectionPoolGroup connectionPoolGroup)
   at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
   at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
   at System.Data.SqlClient.SqlConnection.Open()
   at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
   at System.Data.Common.DbDataAdapter.Fill(DataSet dataSet)

该System.Threading.TimerBase.AddTimerNative()方法是内部调用，请参阅Microsoft 源代码。

我在网上找到了另一个讨论 CLR 的链接 CLR 是否在内部产生一个线程来响应计时器事件？

由于我不知道如何AddTimerNative实现，因此我不知道解决此错误的原因。

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