IBatis.net Oracle配置出现错误

错误为：

- The error occurred while load DataBase Provider.
- The error occurred in <provider name="oracleClient1.0">.
- Check the oracleClient1.0.

"Error while configuring the Provider named \"oracleClient1.0\". Cause : The provider is not in 'providers.config'."

我的配置文件SQLMAP.conf为：

<?xml version="1.0" encoding="utf-8"?>

<sqlMapConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="SqlMapConfig.xsd">
  <settings>
    <setting useStatementNamespaces="false"/>
    <setting cacheModelsEnabled="true"/>
  </settings>
  <providers resource="providers.config"/>
  <database>
    <provider name="oracleClient1.0" />
    <dataSource name="customer" connectionString="Data Source=itdevLoal;user=east;password=east"/>
  </database>

  <sqlMaps>
    <sqlMap resource="maps/Person.xml"/>
  </sqlMaps>

</sqlMapConfig>

其中providers.config文件在根目录下和bin/Debug目录下都有

	<provider 
		name="oracleClient1.0" 
		description="Oracle, Microsoft provider V1.0.5000.0"
		enabled="false" 
		default="false"
		assemblyName="System.Data.OracleClient, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" 
		connectionClass="System.Data.OracleClient.OracleConnection"  
		commandClass="System.Data.OracleClient.OracleCommand" 
		parameterClass="System.Data.OracleClient.OracleParameter" 
		parameterDbTypeClass="System.Data.OracleClient.OracleType" 
		parameterDbTypeProperty="OracleType" 
		dataAdapterClass="System.Data.OracleClient.OracleDataAdapter" 
		commandBuilderClass="System.Data.OracleClient.OracleCommandBuilder" 
		usePositionalParameters = "false" 
		useParameterPrefixInSql = "true" 
		useParameterPrefixInParameter = "false" 
		parameterPrefix=":" 
	/>

查了一天，就是不明白为什么会抛这样的错误。。。

请各位指点一下迷津吧。。。。非常感谢！！