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m_pConnection.CreateInstance("ADODB.Connection");//创建Connection对象
_bstr_t strConnect="Provider=OraOLEDB.Oracle.1;Password=h;Persist Security Info=True;User ID=wangp;Data Source=DBTP";//设置连接字符串,必需是BSTR型或者_bstr_t类型
m_pConnection->Open(strConnect,"wangp","h",adModeUnknown);