Question

有没有办法使用Toad来检查或估计查询的进度？我有一个查询，它最好运行大约20分钟。因为我正在调整查询以尝试使其更快，有时它会在一个完整的循环中结束并且永远不会完成。有时可能需要一个小时。真正有用的是指示查询实际覆盖了多少基础，至少让我知道什么是更快或者什么使它变得更慢。

非常感谢任何帮助。

我已经包含了我的查询，只是有人可能会看到一些明显可能会提高效率的内容......

select * from
(select menu_optn_name, tran_nbr, seq_nbr, cntr_nbr, ch.total_qty, ptt.create_date_time,
um.user_name, ch.trlr_nbr, sum(ref_field_2) as Total from prod_trkg_tran ptt
inner join user_master um 
on um.emplye_id = ptt.user_id
left outer join carton_hdr ch  
on ch.carton_nbr = ptt.cntr_nbr
where (menu_optn_name = 'RF Split/Comb {Carton}' and ptt.cntr_nbr = '0030651942')
group by menu_optn_name, tran_nbr, seq_nbr, cntr_nbr, ch.total_qty, ptt.create_date_time,
um.user_name, ch.trlr_nbr
union
select aptt.menu_optn_name, aptt.tran_nbr, aptt.seq_nbr, aptt.cntr_nbr, ach.total_qty, 
aptt.create_date_time, um.user_name, ach.trlr_nbr, sum(aptt.ref_field_2) 
as Total from   wm_archive.prod_trkg_tran@awm.corp.*******.com aptt
inner join user_master um 
on um.emplye_id = aptt.user_id
left outer join wm_archive.carton_hdr@awm.corp.*******.com ach  
on ach.carton_nbr = aptt.cntr_nbr
where aptt.cntr_nbr not in
(select aptt.cntr_nbr from wm_archive.prod_trkg_tran@awm.corp.*******.com aptt
where aptt.menu_optn_name = 'RF Split/Comb {Carton}' and aptt.cntr_nbr = '0030651942')
and aptt.tran_nbr in
(select aptt.tran_nbr from wm_archive.prod_trkg_tran@awm.corp.*******.com aptt
where aptt.menu_optn_name = 'RF Split/Comb {Carton}' and aptt.cntr_nbr = '0030651942')
group by aptt.menu_optn_name, aptt.tran_nbr, aptt.seq_nbr, aptt.cntr_nbr, ach.total_qty,
aptt.create_date_time, um.user_name, ach.trlr_nbr)
where rownum <=2;

7的

Answer 1

我想说使用Explain Plan选项（ Ctrl + E ）。它会根据您的查询的影响向您提供一个想法。

除此之外，确定查询的持续时间非常困难。

Answer 2

您想要查看v $ session_longops表，例如http://docs.oracle.com/cd/B19306_01/server.102/b14237/dynviews_2092.htm

或者，如果您拥有具有调优和诊断功能的企业管理器，它将显示长时间运行的查询。否则将查询拆分为许多小部分并单独运行。找出需要很长时间并重写或索引的内容。也许把你的问题放在这里，我们可能会提出一些建议。如上所述，解释计划可能有所帮助。

我强烈建议您将查询格式化为可读性，例如

select * from
       (select menu_optn_name, 
               tran_nbr, 
               seq_nbr, 
               cntr_nbr, 
               ch.total_qty, 
               ptt.create_date_time,
               um.user_name, 
               ch.trlr_nbr, 
               sum(ref_field_2) as Total 
        from prod_trkg_tran ptt
        inner join user_master um on um.emplye_id = ptt.user_id
        left outer join carton_hdr ch on ch.carton_nbr = ptt.cntr_nbr
        where (menu_optn_name = 'RF Split/Comb {Carton}' 
        and ptt.cntr_nbr = '0030651942')
        group by menu_optn_name, 
                 tran_nbr, 
                 seq_nbr, 
                 cntr_nbr, 
                 ch.total_qty, 
                 ptt.create_date_time,
                 um.user_name, 
                 ch.trlr_nbr
        union
        select aptt.menu_optn_name, 
               aptt.tran_nbr, 
               aptt.seq_nbr, 
               aptt.cntr_nbr, 
               ach.total_qty, 
               aptt.create_date_time, 
               um.user_name, 
               ach.trlr_nbr, 
               sum(aptt.ref_field_2) as Total 
        from   wm_archive.prod_trkg_tran@awm.corp.*******.com aptt
        inner join user_master um on um.emplye_id = aptt.user_id
        left outer join wm_archive.carton_hdr@awm.corp.*******.com ach on ach.carton_nbr = aptt.cntr_nbr
        where aptt.cntr_nbr not in (select aptt.cntr_nbr 
                                    from wm_archive.prod_trkg_tran@awm.corp.*******.com aptt
                                    where aptt.menu_optn_name = 'RF Split/Comb {Carton}' 
                                    and aptt.cntr_nbr = '0030651942')
        and aptt.tran_nbr in (select aptt.tran_nbr 
                              from wm_archive.prod_trkg_tran@awm.corp.*******.com aptt
                              where aptt.menu_optn_name = 'RF Split/Comb {Carton}' 
                              and aptt.cntr_nbr = '0030651942')
        group by aptt.menu_optn_name, 
                 aptt.tran_nbr, 
                 aptt.seq_nbr, 
                 aptt.cntr_nbr, 
                 ach.total_qty,
                 aptt.create_date_time, 
                 um.user_name, 
                 ach.trlr_nbr)
where rownum <=2;

你是否尝试过分别运行2个子选项，看看他们花了多长时间以及联盟的每一半。你真的只想要第一行（你可以尝试添加第一行提示 - SELECT / * + FIRST_ROWS * /）吗？你只能通过找到缓慢运行的特定部分来调整东西！

Oracle（TOAD）查询进度

2 个答案: