复杂的查询需要优化

Question

以下查询需要116秒才能显示输出。

我想知道是否有更好的方法来编写下面的代码：

select DP.PARTY_NUMBER
          ,DP.STATUS
          ,DP.PARTY_NAME
          ,DP.ATTRIBUTE14
          ,hps.party_site_number
          ,(
            select hs.party_name 
            from ar.hz_parties hs 
            where hs.party_id = hps.party_id 
            )REP_NAME,
             hps.STATUS 
from ar.hz_parties dp
    ,ar.hz_relationships rl
    ,ar.hz_party_sites hps 
where dp.party_type ='ORGANIZATION' 
and dp.status ='A' 
and dp.hq_branch_ind ='DP' 
and dp.party_id = rl.subject_id(+) 
and RL.relationship_code)'GTM_DP_OF_REP_PARTY_SITE' 
and rl.status(+) ='A' 
and rl.directional_flag(+) ='F' 
and trunc(sysdate) between trunc(rl.start_date(+)) and trunc(rl.end_date(+)) 
and rL.object_id = hps.party_site_id(+);