我以前写了一些程序，用到IBATIS.NET来连接数据库，数据库连接字符串没有错误，路径也没有错误，在我以前的Windows Server 2008上运行没有问题，但是当我系统升级到Windows Server 2008 R2的时候，在安装和运行这个程序，就老是抛出，这个异常:Unable to open connection to "OleDb, provider V2.0.0.0 in framework .NET V2".在网上，搜索了很久，都没有找到答案，只有请教各位了！还有，要说明的是我连接的是Access数据库.

IBATIS.NET的slqmap.config文件如下:

<?xml version="1.0" encoding="utf-8"?>
<sqlMapConfig xmlns="http://ibatis.apache.org/dataMapper" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >

  <!-- Rem : If used via a DataAccess context, properties tag will be ignored -->
  <!--指定从application的根目录进行加载-->
  <!--<properties resource="database.config"/>-->
  <settings>
    <!--
    <setting useStatementNamespaces="${useStatementNamespaces}"/>
    -->
    <setting cacheModelsEnabled="true"/>
    <setting validateSqlMap="true"/>
    <setting useStatementNamespaces="false"></setting>
  </settings>

  <!-- Optional if resource -->
  <!--<providers  resource="../VodIC.Service/providers.config"/>   -->
  <!--embedded指定文件可以作为程序集的资源文件进行加载-->
  <!---->
  <providers embedded="HENU.IISCompanion.Service.providers.config,HENU.IISCompanion.Service"/>
  <!-- ==== SqlClient configuration ========= -->
  <!-- Rem : If used via a DataAccess context, database tag will be ignored -->
  <database>
    <provider name="OleDb1.1"/>
    <!--<dataSource name="VodDatabase" connectionString="user id=${username};password=${password};data source=${datasource};database=${database};Integrated Security=${sspi};Connect Timeout=30;"/>-->
    <dataSource name="Access" connectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source="/>
  </database>

  <sqlMaps>
    <!-- user via embedded-->
    <!---->
    <sqlMap embedded="HENU.IISCompanion.Service.Maps.WebSite.xml,HENU.IISCompanion.Service"/>
    <sqlMap embedded="HENU.IISCompanion.Service.Maps.FtpSite.xml,HENU.IISCompanion.Service"/>
    <sqlMap embedded="HENU.IISCompanion.Service.Maps.FtpVirDir.xml,HENU.IISCompanion.Service"/>
    <sqlMap embedded="HENU.IISCompanion.Service.Maps.ServerInfo.xml,HENU.IISCompanion.Service"/>
  </sqlMaps>
</sqlMapConfig>

IBATIS.NET的providers.config文件如下：

<provider name="OleDb1.1"
   description="OleDb, provider V1.0.5000.0 in framework .NET V1.1"
   enabled="true"
   assemblyName="System.Data, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
    connectionClass="System.Data.OleDb.OleDbConnection"
   commandClass="System.Data.OleDb.OleDbCommand"
   parameterClass="System.Data.OleDb.OleDbParameter"
   parameterDbTypeClass="System.Data.OleDb.OleDbType"
   parameterDbTypeProperty="OleDbType"
   dataAdapterClass="System.Data.OleDb.OleDbDataAdapter"
   commandBuilderClass="System.Data.OleDb.OleDbCommandBuilder"
   usePositionalParameters="true"
   useParameterPrefixInSql="false"
   useParameterPrefixInParameter="false"
   parameterPrefix=""
    allowMARS="false"   
    />
  <provider name="OleDb2.0"
    description="OleDb, provider V2.0.0.0 in framework .NET V2"
    enabled="true"
    assemblyName="System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
    connectionClass="System.Data.OleDb.OleDbConnection"
    commandClass="System.Data.OleDb.OleDbCommand"
    parameterClass="System.Data.OleDb.OleDbParameter"
    parameterDbTypeClass="System.Data.OleDb.OleDbType"
    parameterDbTypeProperty="OleDbType"
    dataAdapterClass="System.Data.OleDb.OleDbDataAdapter"
    commandBuilderClass="System.Data.OleDb.OleDbCommandBuilder"
    usePositionalParameters="true"
    useParameterPrefixInSql="false"
    useParameterPrefixInParameter="false"
    parameterPrefix=""
    allowMARS="false"
    /> 

请指教。