C# PruneConnectionPoolGroups内存不足异常

我们有一个windows服务正在抛出错误并关闭，错误如下：

Failed to stop service. System.InvalidOperationException: An unhandled exception was detected ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.Data.ProviderBase.DbConnectionFactory.PruneConnectionPoolGroups(Object state)

   at System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.TimerQueueTimer.CallCallback()
   at System.Threading.TimerQueueTimer.Fire()
   at System.Threading.TimerQueue.FireNextTimers()
   at System.Threading.TimerQueue.AppDomainTimerCallback(Int32 id)

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我在PruneConnectionPoolGroups中查找了这个错误，有迹象表明，当池试图在事务完成之前关闭连接时，会导致竞争条件，但这只是猜测。以前有人见过这个错误并找到了解决方法吗？

最后你是如何解决的？