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try
{
    strConnect = L"Provider=ORAOLEDB.ORACLE.1;Password=" + 
                user_password + 
                L";User ID=" + 
                user_name + 
                L";Data Source=" + 
                server_ip + 
                L"/" + 
                oracle_dbname + 
                L";Unicode=True;Persist Security Info=True";
    m_pConn->ConnectionTimeout = connect_timeout;
    HRESULT Ret = m_pConn->Open((_bstr_t)strConnect.c_str(), user_name.c_str(), user_password.c_str(), adModeUnknown);
    if (Ret != S_OK)
    {
        DEBUG_TRACE_ERROR(WSTR("CKmObjectDataSourceORCL_KmServerConnect_1,EER:ORACLE(%s)连接失败.,%s:%d"), 
                        connectstr_temp.c_str(), 
                        __WFUNCTION__, 
                        __LINE__);
        ;
    }
}
catch(_com_error e)
{
    std::wstring result_unicode = (wchar_t *)e.ErrorMessage();
    DEBUG_TRACE_ERROR(WSTR("CKmObjectDataSourceORCL_KmServerConnect_0,EER:ORACLE(%s)连接异常(%s).,%s:%d"), 
                    connectstr_temp.c_str(), 
                    result_unicode.c_str(), 
                    __WFUNCTION__, 
                    __LINE__);
    ;
}