Failed to access IIS metabase
Failed to access IIS metabase.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Web.Hosting.HostingEnvironmentException: Failed to access IIS metabase.
The process account used to run ASP.NET must have read access to the IIS metabase (e.g. IIS://servername/W3SVC). For information on modifying metabase permissions, please see http://support.microsoft.com/?kbid=267904.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[HostingEnvironmentException: Failed to access IIS metabase.]
System.Web.Configuration.MetabaseServerConfig.MapPathCaching(String siteID, VirtualPath path) +3500426
System.Web.Configuration.MetabaseServerConfig.System.Web.Configuration.IConfigMapPath.MapPath(String siteID, VirtualPath vpath) +9
System.Web.Hosting.HostingEnvironment.MapPathActual(VirtualPath virtualPath, Boolean permitNull) +163
System.Web.CachedPathData.GetConfigPathData(String configPath) +382
System.Web.CachedPathData.GetConfigPathData(String configPath) +243
System.Web.CachedPathData.GetApplicationPathData() +68
System.Web.CachedPathData.GetVirtualPathData(VirtualPath virtualPath, Boolean permitPathsOutsideApp) +3393747
System.Web.Configuration.RuntimeConfig.GetLKGRuntimeConfig(VirtualPath path) +189
相关文档：
注释 本主题中的信息仅适用于 Microsoft Access 数据库 (.mdb)。
有各种不同的策略用来控制对 Microsoft Access 数据库及其对象的访问级别。下面大致按照安全级别的顺序，简要介绍这些策略。
编码/解码
为数据库编码是最简单的保护方法。为数据库编码可压缩数据库文件，并帮助防止该文件被文字处理程序读取。但 ......
MS Access ODBC connection strings
Standard Security:
"Driver= {MicrosoftAccessDriver(*.mdb)};DBQ=C:\App1\Your_Database_Name.mdb;Uid=Your_Username;Pwd=Your_Password;"
Workgroup:
"Driver={Microsoft Access Driver (*.mdb)}; Dbq=C:\App1\Your_Database_Name.mdb; SystemDB=C:\App1\Your_Database_Name.mdw ......
[oledb]
; Everything after this line is an OLE DB initstring
Provider=Microsoft.Jet.OLEDB.4.0;Password=ypbwkfyjhyhgzj;User ID=morningstar;Data Source=C:\Program Files\Kingdee\KIS\BZB\北极星.AIS;Persist Security Info=True;Jet OLEDB:System database=C:\Program Files\Kingdee\KIS\BZB\system.mda
......
在access中，update语句不能有子查询的，如不允许如下语句出现：
UPDATE tblA SET lngID=
(SELECT lngID from tblB WHERE strName='nihao')
这样就需要另想办法解决问题。
解决方案：
A。
可以用update另外的语法解决：
UPDATE Tab1 a,(Select ID,Name from Tab2) b
SET a.Name = ......
OPENDATASOURCE 打开excel、access、qsl
use test
insert into OPENDATASOURCE('SQLOLEDB', 'Data Source=192.168.2.200;User ID=sa;Password=110').test.dbo.adf--打开远程数据库
select * from OpenRowSet('Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;HDR=Yes;IMEX=1;Database=c:\2003.xls', [kg$])
--查询远程数据 ......
