我有一块sql程序外运行非常流畅。当我把sql块放在过程中以返回ref_cursor时,该过程花了相当长的时间来执行ref_cursor。Oracle Procedure需要很长时间才能运行,但直接sql运行很快
与数据库管理员的帮助下,我们实现了数据库配置文件,它的工作极大地加快程序,但随后在那个特定的程序的任何微小的变化使它就会失控。我不确定是什么问题..我用尽了选择。我应该如何解决这个奇怪的问题?
预先感谢您。
编辑..这里是查询
with query_ownership as (SELECT leeo.legal_entity_id,
leeo.parent_le_id,
SUM(leeo.effective_ownership) ownership_percent
FROM data_ownership leeo
WHERE leeo.start_date <=
to_date('12/31/2012','mm/dd/yyyy')
AND ((leeo.end_date < &lvTaxYearDate and leeo.end_date > &lvTaxYearBeginDate)
to_date('12/31/2012','mm/dd/yyyy') OR
leeo.end_date IS NULL)
and leeo.stock_type in ('E')
GROUP BY leeo.legal_entity_id, leeo.parent_le_id
HAVING SUM(leeo.effective_ownership) > 0
),
query_branches as (SELECT b.branch_id as legal_entity_id,
b.legal_entity_id as perent_le_id,
1.00 as ownership_percent
FROM company_branches b
WHERE b.tax_year = 2012),
child_query as (select * from query_ownership
UNION
select * from query_branches),
parent_query as (select * from query_ownership
UNION
select * from query_branches),
inner_query as (SELECT rownum as sortcode,
-level as lvl,
child_query.parent_le_id,
child_query.legal_entity_id,
child_query.ownership_percent
FROM child_query
START WITH child_query.legal_entity_id = 'AB1203'
CONNECT BY NOCYCLE PRIOR child_query.legal_entity_id =
child_query.parent_le_id
AND child_query.ownership_percent >= 0.01
and level = 0
UNION
SELECT rownum as sortcode,
level - 1 as lvl,
parent_query.parent_le_id,
parent_query.legal_entity_id,
parent_query.ownership_percent
FROM parent_query
START WITH parent_query.legal_entity_id = 'AB1203'
CONNECT BY NOCYCLE
PRIOR parent_query.parent_le_id =
parent_query.legal_entity_id
AND parent_query.ownership_percent >= 0.01)
,ownership_heirarchy as (
SELECT max(inner_query.sortcode) as sortcode,
max(inner_query.lvl) as lvl,
inner_query.parent_le_id,
inner_query.legal_entity_id,
inner_query.ownership_percent from inner_query
GROUP BY inner_query.parent_le_id,
inner_query.legal_entity_id,
inner_query.ownership_percent
)
,goldList as (
SELECT lem2.legal_entity_id from ownership_heirarchy,
company_entity_year lem1,
company_entity_year lem2
WHERE ownership_heirarchy.parent_le_id = lem2.legal_entity_id
AND lem2.tax_year = 2012
AND ownership_heirarchy.legal_entity_id = lem1.legal_entity_id
AND lem1.tax_year = 2012
AND lem1.legal_entity_type <> 'EXT'
AND lem1.non_legal_entity_flag is null
AND lem2.legal_entity_type <> 'EXT'
AND lem2.non_legal_entity_flag is null
and TRIM(lem2.alt_tax_type) is null
and UPPER(lem2.tax_type) in ('DC', 'DPS', 'TXN')
),
fulllist as (
select * from goldList
union
select gc.parent_le_id from company_entity_year e, consolidation_group gc
where e.LEGAL_ENTITY_ID = 'AB1203' and e.tax_year = 2012
and e.TAX_CONSOLIDATION_GRP = gc.group_id
union
select e.leid from vdst_entity e where e.TAX_YEAR = 2012
and e.ALT_TAX_TYPE in (3,8)
and e.LEID = 'AB1203'
)
select distinct dc.dcn_id as dcnId,
dc.dcn_name as dcnName,
dy.dcn_year_id dcnYearId,
ty.tax_year_id taxYearId,
ty.tax_year taxYear
from company_dcn dc, company_dcn_year dy, company_tax_year ty
where dc.dcn_id = dy.dcn_id
and dy.year_id = ty.tax_year_id
and ty.tax_year = 2012
and dc.leid in (
select * from fulllist
);
问题很明显就在存储过程的第17行。 – mustaccio
更新了问题以包含有问题的查询。 –
听起来好像对于带有文字的查询(“在流程之外平滑”)和绑定变量(在PL/SQL中)可能有不同的执行计划。 – mustaccio