[InvalidOperationException: 超时时间已到。超时时间已到,但是尚未从池中获取连接。出现这种情况可能是因为所有池连接均在使用,并且达到了最大池大小。]
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +4863738
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.SqlClient.SqlConnection.Open() +122
MyDll.Main.SQLDB.Open() in C:\Users\Administrator\Documents\Visual Studio 2008\Projects\MyDll\MyDll\MyDll.cs:76
ASP.global_asax.Session_Start(Object sender, EventArgs e) in e:\web\公交城市版\global.asax:25
System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e) +8866884
System.Web.SessionState.SessionStateModule.CompleteAcquireState() +237
System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +504
System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +66
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
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