导读:1建站知识这篇论坛文章着重介绍了Access数据库出现0x80004005问题的解决方法，更多内容请参考下文： 项目做了三个月了，终于也差不多完成了，昨天交去测试，结果出网站建设多少钱网站seo优化。

这篇论坛文章着重介绍了Access数据库出现0x80004005问题的解决方法，更多内容请参考下文：

项目做了三个月了，终于也差不多完成了，昨天交去测试，结果出现了下面这样的问题：

[OleDbException (0x80004005): Unspecified error]

System.Data.OleDb.OleDbConnection.ProcessResults(Int32 hr) +20

System.Data.OleDb.OleDbConnection.InitializeProvider() +57

System.Data.OleDb.OleDbConnection.Open() +203

Webb.WAVE.Controls.OleDBManager.FillDataTable(DataTable i_dataTable) +85

Webb.WAVE.Controls.WaveExpire.LoadExpireDateForClient(DataTable i_table, Int64 i_clientID) +189

Webb.WAVE.inc_Client_AccessManage.LoadExpireDate(String i_sortKey) +99

Webb.WAVE.inc_Client_AccessManage.Page_Load(Object sender, EventArgs e) +85

System.Web.UI.Control.OnLoad(EventArgs e) +67

System.Web.UI.Control.LoadRecursive() +35

System.Web.UI.Control.LoadRecursive() +98

System.Web.UI.Contro网站建设l.LoadRecursive() +98

System.Web.UI.Page.ProcessRequestMain() +750

说明一下：这个错误总会在运行一段时间后出现，而等一会工(不定多少时间)，或者重新启动IIS或者服务器，这个问题就解决了。而再运行一会又会(时间越来越短)出现这个问题。

而我在自己的电脑是运行时，基本上没出现这样的问题，于是反复的查找原因，不得其解，在MSDN里找到了三篇相关的文章：其中这一篇还有点道理:

SYMPTOMS

When trying to connect to an Access .mdb file, an ODBC error is returned stating "Disk or Network Error". The Microsoft OLE DB Provider for the Microsoft Jet database engine may also return an "Unspecified error" (error code = 0x80004005) message.

The problem can occur only when the data source is opened under the Microsoft Internet Information Server (IIS) or a Microsoft Windows NT service but not under a logged-on user account.CAUSE

Jet creates a temporary file when the高端网站建设 engine is started. In doing so, it first checks the TMP environment variable and uses that path to define where the temporary file is created. If it doesn't see a TMP environment variable, it looks for the TEMP environment variable. If TEMP is not defined, it then uses the Windows folder (\WINDOWS or \WINNT).

If TMP/TEMP is defined but points to a nonexistent folder, the error occurs.

Moreover, when opening the Access database through IIS or a Windows NT service, and when IIS or the service is running under the local system account, the TMP or TEMP system environment variable is used. When the Web services or Windows NT service are started using a user account, the TMP/TEMP user profile environment variables is used.RESOLUTION

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