ibatis连数据库错误：unable to open connection to "Oracle,Microsoft provider v1.0.5000.0

用c#在win7 64位里编写Winform用ibatis连接oracle数据库出现错误:unable to open connection to "Oracle,Microsoft provider v1.0.5000.0"， 用c#在win7 64位里编写Winform用ibatis连接oracle数据库出现错误:un