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1#
发表于 2013-1-13 14:29:09
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查看: 3510 |
回复: 4
本帖最后由 XueChao 于 2013-1-13 14:30 编辑
Oracle version: 10.2.0.4
现象:SQL执行慢 需要 8秒
执行SQL:
select /*+ dynamic_sampling(kd 10) dynamic_sampling_est_cdn(kd) */ all count(kd.r_object_id) "cnt"
from km_document_sp kd
where (((kd.approve_state = 1) or (kd.approve_state = 4)) and
(kd.r_object_type = 'km_document'))
and (kd.i_has_folder = 1 and kd.i_is_deleted = 0)
and ((kd.owner_name in ('fjdlkm_admin',
'kmg90054746',
'kmg99001011',
'kmg90054760',
'dm_world',
'km_120f1f0e8020ac54',
'km_group',
'kmg90055413')) or
(exists
(select /*+ dynamic_sampling(ACL_S0 10) dynamic_sampling_est_cdn(ACL_S0) dynamic_sampling(ACL_R 10) dynamic_sampling_est_cdn(ACL_R) */ 1
from dm_acl_s ACL_S0, dm_acl_r ACL_R
where ACL_S0.r_object_id = ACL_R.r_object_id
and kd.acl_domain = ACL_S0.owner_name
and kd.acl_name = ACL_S0.object_name
and ((ACL_R.r_accessor_name in ('fjdlkm_admin', 'dm_world') or
(ACL_R.r_is_group = 1 and
(ACL_R.r_accessor_name in
('fjdlkm_admin',
'kmg90054746',
'kmg99001011',
'kmg90054760',
'dm_world',
'km_120f1f0e8020ac54',
'km_group',
'kmg90055413')))) and
((ACL_R.r_permit_type = 0 or ACL_R.r_permit_type is null) and
(((ACL_R.r_accessor_permit >= 2))))))))
执行计划:
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
Plan hash value: 3781511774
--------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes |TempSpc| Cost (%CPU)| Time |
--------------------------------------------------------------------------------------------------------------
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 97 | | 4332 (1)| 00:00:52 |
| 1 | SORT AGGREGATE | | 1 | 97 | | | |
|* 2 | FILTER | | | | | | |
|* 3 | HASH JOIN | | 326K| 30M| 10M| 4332 (1)| 00:00:52 |
| 4 | INLIST ITERATOR | | | | | | |
| 5 | TABLE ACCESS BY INDEX ROWID| KM_DOCUMENT_S | 332K| 6490K| | 427 (1)| 00:00:06 |
|* 6 | INDEX RANGE SCAN | D_1F0F1F0E80002508 | 332K| | | 3 (34)| 00:00:01 |
|* 7 | TABLE ACCESS BY INDEX ROWID | DM_SYSOBJECT_S | 324K| 23M| | 2023 (1)| 00:00:25 |
|* 8 | INDEX RANGE SCAN | D_1F0F1F0E80002902 | 324K| | | 64 (0)| 00:00:01 |
|* 9 | TABLE ACCESS BY INDEX ROWID | DM_ACL_R | 1 | 29 | | 1 (0)| 00:00:01 |
| 10 | NESTED LOOPS | | 1 | 76 | | 2 (0)| 00:00:01 |
|* 11 | INDEX RANGE SCAN | D_1F0F1F0E80000104 | 1 | 47 | | 1 (0)| 00:00:01 |
|* 12 | INDEX RANGE SCAN | D_1F0F1F0E80000102 | 4 | | | 1 (0)| 00:00:01 |
--------------------------------------------------------------------------------
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
-----------------------------------------------------------------------------------------------------------------------------------
2 - filter("XB_"."OWNER_NAME"='dm_world' OR "XB_"."OWNER_NAME"='fjdlkm_admin' OR
"XB_"."OWNER_NAME"='km_120f1f0e8020ac54' OR "XB_"."OWNER_NAME"='km_group' OR
"XB_"."OWNER_NAME"='kmg90054746' OR "XB_"."OWNER_NAME"='kmg90054760' OR
"XB_"."OWNER_NAME"='kmg90055413' OR "XB_"."OWNER_NAME"='kmg99001011' OR EXISTS (SELECT /*+ */ 0 FROM
"DM_ACL_R" "ACL_R","DM_ACL_S" "ACL_S0" WHERE "ACL_S0"."OBJECT_NAME"=:B1 AND "ACL_S0"."OWNER_NAME"=:B2
AND "ACL_S0"."R_OBJECT_ID"="ACL_R"."R_OBJECT_ID" AND "ACL_R"."R_ACCESSOR_PERMIT">=2 AND
(("ACL_R"."R_ACCESSOR_NAME"='dm_world' OR "ACL_R"."R_ACCESSOR_NAME"='fjdlkm_admin') OR
"ACL_R"."R_IS_GROUP"=1 AND ("ACL_R"."R_ACCESSOR_NAME"='dm_world' OR
"ACL_R"."R_ACCESSOR_NAME"='fjdlkm_admin' OR "ACL_R"."R_ACCESSOR_NAME"='km_120f1f0e8020ac54' OR
"ACL_R"."R_ACCESSOR_NAME"='km_group' OR "ACL_R"."R_ACCESSOR_NAME"='kmg90054746' OR
"ACL_R"."R_ACCESSOR_NAME"='kmg90054760' OR "ACL_R"."R_ACCESSOR_NAME"='kmg90055413' OR
"ACL_R"."R_ACCESSOR_NAME"='kmg99001011')) AND ("ACL_R"."R_PERMIT_TYPE"=0 OR "ACL_R"."R_PERMIT_TYPE" IS NULL)))
3 - access("XB_"."R_OBJECT_ID"="EOB_"."R_OBJECT_ID")
6 - access("EOB_"."APPROVE_STATE"=1 OR "EOB_"."APPROVE_STATE"=4)
7 - filter("XB_"."I_HAS_FOLDER"=1 AND "XB_"."I_IS_DELETED"=0)
8 - access("XB_"."R_OBJECT_TYPE"='km_document')
9 - filter("ACL_R"."R_ACCESSOR_PERMIT">=2 AND (("ACL_R"."R_ACCESSOR_NAME"='dm
"ACL_R"."R_ACCESSOR_NAME"='fjdlkm_admin') OR "ACL_R"."R_IS_GROUP"=1 AND
("ACL_R"."R_ACCESSOR_NAME"='dm_world' OR "ACL_R"."R_ACCESSOR_NAME"='fjdlkm_admin' OR
"ACL_R"."R_ACCESSOR_NAME"='km_120f1f0e8020ac54' OR "ACL_R"."R_ACCESSOR_NAME"='km_group' OR
"ACL_R"."R_ACCESSOR_NAME"='kmg90054746' OR "ACL_R"."R_ACCESSOR_NAME"='kmg90054760' OR
"ACL_R"."R_ACCESSOR_NAME"='kmg90055413' OR "ACL_R"."R_ACCESSOR_NAME"='kmg99001011')) AND
("ACL_R"."R_PERMIT_TYPE"=0 OR "ACL_R"."R_PERMIT_TYPE" IS NULL))
11 - access("ACL_S0"."OWNER_NAME"=:B1 AND "ACL_S0"."OBJECT_NAME"=:B2)
12 - access("ACL_S0"."R_OBJECT_ID"="ACL_R"."R_OBJECT_ID")
Note
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
- dynamic sampling used for this statement
补充:
kd 50万条左右
ACL_S0 50万条左右
ACL_R 50万条左右
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