我们正在尝试在Oracle db中执行查询。执行时间为5秒。所有列都已编制索引。
select
count(*)
from
ehub_mbr_sds.ehub_sds_mbr a
join
ehub_mbr_sds.ehub_sds_mbr_cntrct b
on a.ehub_mbr_id = b.ehub_mbr_id
join
ehub_mbr_sds.ehub_sds_cntrct d
on b.cntrct_id = d.cntrct_id
JOIN
EHUB_MBR_SDS.EHUB_SDS_CVRG c
ON b.EHUB_MBR_CNTRCT_ID= c.EHUB_MBR_CNTRCT_ID
JOIN
EHUB_MBR_SDS.EHUB_SDS_ELGBLTY f
ON f.PROD_CD= c.PROD_CD
JOIN
ehub_mbr_sds.ehub_sds_grp e
on d.ehub_grp_id = e.ehub_grp_id
where
a.sor_cd ='****'
AND e.GRP_ID='****' --need indexes for GRPID
AND c.sub_grp_id='*****'
and f.plan_type_cd in('***')
and CURRENT_TIMESTAMP > c.cvrg_efctv_dt
and CURRENT_TIMESTAMP > c.cvrg_trmntn_dt
order by
b.hcid;
任何指针都会有所帮助
发布解释计划。在此期间，使用并行性重新尝试查询，并在选择前面添加提示。 I. E.
select /*+parallel*/...
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删除顺序，下面是没有并行性的解释计划
Plan hash value: 2953621403
---------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
---------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 161 | 25 (0)| 00:00:01 |
| 1 | SORT AGGREGATE | | 1 | 161 | | |
| 2 | NESTED LOOPS | | 1 | 161 | 25 (0)| 00:00:01 |
| 3 | NESTED LOOPS | | 12 | 161 | 25 (0)| 00:00:01 |
| 4 | NESTED LOOPS | | 1 | 147 | 13 (0)| 00:00:01 |
| 5 | NESTED LOOPS | | 1 | 128 | 11 (0)| 00:00:01 |
| 6 | NESTED LOOPS | | 1 | 108 | 9 (0)| 00:00:01 |
| 7 | NESTED LOOPS | | 1 | 92 | 7 (0)| 00:00:01 |
|* 8 | TABLE ACCESS BY INDEX ROWID BATCHED| EHUB_SDS_CVRG | 1 | 53 | 5 (0)| 00:00:01 |
|* 9 | INDEX RANGE SCAN | IX5_EHUB_SDS_CVRG | 1 | | 4 (0)| 00:00:01 |
| 10 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_MBR_CNTRCT | 1 | 39 | 2 (0)| 00:00:01 |
|* 11 | INDEX UNIQUE SCAN | PK_EHUB_SDS_MBR_CNTRCT | 1 | | 1 (0)| 00:00:01 |
|* 12 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_CNTRCT | 1 | 16 | 2 (0)| 00:00:01 |
|* 13 | INDEX UNIQUE SCAN | PK_EHUB_SDS_CNTRCT | 1 | | 1 (0)| 00:00:01 |
|* 14 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_GRP | 1 | 20 | 2 (0)| 00:00:01 |
|* 15 | INDEX UNIQUE SCAN | PK_EHUB_SDS_GRP | 1 | | 1 (0)| 00:00:01 |
|* 16 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_MBR | 1 | 19 | 2 (0)| 00:00:01 |
|* 17 | INDEX UNIQUE SCAN | PK_EHUB_SDS_MBR | 1 | | 1 (0)| 00:00:01 |
|* 18 | INDEX RANGE SCAN | IX3_EHUB_SDS_ELGBLTY | 12 | | 2 (0)| 00:00:01 |
|* 19 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_ELGBLTY | 1 | 14 | 12 (0)| 00:00:01 |
---------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
8 - filter(SYS_EXTRACT_UTC(INTERNAL_FUNCTION("C"."CVRG_EFCTV_DT"))<SYS_EXTRACT_UTC(CURRENT_TIMESTAMP(6))
AND SYS_EXTRACT_UTC(INTERNAL_FUNCTION("C"."CVRG_TRMNTN_DT"))<SYS_EXTRACT_UTC(CURRENT_TIMESTAMP(6)))
9 - access("C"."SUB_GRP_ID"='*********')
11 - access("B"."EHUB_MBR_CNTRCT_ID"="C"."EHUB_MBR_CNTRCT_ID")
12 - filter("D"."EHUB_GRP_ID" IS NOT NULL)
13 - access("B"."CNTRCT_ID"="D"."CNTRCT_ID")
14 - filter("E"."GRP_ID"='*****')
15 - access("D"."EHUB_GRP_ID"="E"."EHUB_GRP_ID")
16 - filter("A"."SOR_CD"='*****')
17 - access("A"."EHUB_MBR_ID"="B"."EHUB_MBR_ID")
18 - access("F"."PROD_CD"="C"."PROD_CD")
19 - filter("F"."PLAN_TYPE_CD"='*****')
Note
-----
- dynamic statistics used: dynamic sampling (level=2)
- this is an adaptive plan
- 2 Sql Plan Directives used for this statement
}
用并行（4）解释计划
Plan hash value: 2232660988
--------------------------------------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | TQ |IN-OUT| PQ Distrib |
--------------------------------------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | 161 | 2775 (1)| 00:00:01 | | | |
| 1 | SORT AGGREGATE | | 1 | 161 | | | | | |
| 2 | PX COORDINATOR | | | | | | | | |
| 3 | PX SEND QC (RANDOM) | :TQ10003 | 1 | 161 | | | Q1,03 | P->S | QC (RAND) |
| 4 | SORT AGGREGATE | | 1 | 161 | | | Q1,03 | PCWP | |
| 5 | NESTED LOOPS | | 1 | 161 | 2775 (1)| 00:00:01 | Q1,03 | PCWP | |
| 6 | NESTED LOOPS | | 12 | 161 | 2775 (1)| 00:00:01 | Q1,03 | PCWP | |
| 7 | NESTED LOOPS | | 1 | 147 | 2771 (1)| 00:00:01 | Q1,03 | PCWP | |
| 8 | NESTED LOOPS | | 1 | 128 | 2771 (1)| 00:00:01 | Q1,03 | PCWP | |
| 9 | NESTED LOOPS | | 1 | 108 | 2770 (1)| 00:00:01 | Q1,03 | PCWP | |
| 10 | NESTED LOOPS | | 1 | 92 | 2770 (1)| 00:00:01 | Q1,03 | PCWP | |
| 11 | BUFFER SORT | | | | | | Q1,03 | PCWC | |
| 12 | PX RECEIVE | | | | | | Q1,03 | PCWP | |
| 13 | PX SEND HASH | :TQ10001 | | | | | Q1,01 | P->P | HASH |
|* 14 | TABLE ACCESS BY INDEX ROWID BATCHED| EHUB_SDS_CVRG | 1 | 53 | 2769 (1)| 00:00:01 | Q1,01 | PCWP | |
| 15 | BUFFER SORT | | | | | | Q1,01 | PCWC | |
| 16 | PX RECEIVE | | 3845 | | 9 (0)| 00:00:01 | Q1,01 | PCWP | |
| 17 | PX SEND HASH (BLOCK ADDRESS) | :TQ10000 | 3845 | | 9 (0)| 00:00:01 | Q1,00 | S->P | HASH (BLOCK|
| 18 | PX SELECTOR | | | | | | Q1,00 | SCWC | |
|* 19 | INDEX RANGE SCAN | IX4_EHUB_SDS_CVRG | 3845 | | 9 (0)| 00:00:01 | Q1,00 | SCWP | |
| 20 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_MBR_CNTRCT | 1 | 39 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 21 | INDEX UNIQUE SCAN | PK_EHUB_SDS_MBR_CNTRCT | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 22 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_CNTRCT | 1 | 16 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 23 | INDEX UNIQUE SCAN | PK_EHUB_SDS_CNTRCT | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 24 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_GRP | 1 | 20 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 25 | INDEX UNIQUE SCAN | PK_EHUB_SDS_GRP | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 26 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_MBR | 1 | 19 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 27 | INDEX UNIQUE SCAN | PK_EHUB_SDS_MBR | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 28 | INDEX RANGE SCAN | IX3_EHUB_SDS_ELGBLTY | 12 | | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 29 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_ELGBLTY | 4279 | 59906 | 3 (0)| 00:00:01 | Q1,03 | PCWP | |
--------------------------------------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
14 - filter(SYS_EXTRACT_UTC(INTERNAL_FUNCTION("C"."CVRG_EFCTV_DT"))<=SYS_EXTRACT_UTC(CURRENT_TIMESTAMP(6)) AND
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("C"."CVRG_TRMNTN_DT"))>=SYS_EXTRACT_UTC(CURRENT_TIMESTAMP(6)))
19 - access("C"."SUB_GRP_ID"='*****')
21 - access("B"."EHUB_MBR_CNTRCT_ID"="C"."EHUB_MBR_CNTRCT_ID")
22 - filter("D"."EHUB_GRP_ID" IS NOT NULL)
23 - access("B"."CNTRCT_ID"="D"."*****")
24 - filter("E"."GRP_ID"='****')
25 - access("D"."EHUB_GRP_ID"="E"."****")
26 - filter("A"."SOR_CD"='****')
27 - access("A"."EHUB_MBR_ID"="B"."*******")
28 - access("F"."PROD_CD"="C"."*****")
29 - filter("F"."PLAN_TYPE_CD"='****')
Note
-----
- dynamic statistics used: dynamic sampling (level=AUTO)
- Degree of Parallelism is 4 because of hint
- this is an adaptive plan
任何人都可以给我们分析这个我无法运行诊断没有那些特权
SYS_EXTRACT_UTC(INTERNAL_FUNCTION("C"."CVRG_TRMNTN_DT"))<SYS_EXTRACT_UTC(CURRENT_TIMESTAMP(6)))
- 4 Sql Plan Directives used for this statement
- Degree of Parallelism is 4 because of hint
- dynamic statistics used: dynamic sampling (level=4)
- this is an adaptive plan
14 - filter(SYS_EXTRACT_UTC(INTERNAL_FUNCTION("C"."CVRG_EFCTV_DT"))<SYS_EXTRACT_UTC(CURRENT_TIMESTAMP(6)) AND
19 - access("C"."SUB_GRP_ID"='****')
21 - access("B"."EHUB_MBR_CNTRCT_ID"="C"."EHUB_MBR_CNTRCT_ID")
22 - filter("D"."EHUB_GRP_ID" IS NOT NULL)
23 - access("B"."CNTRCT_ID"="D"."****")
24 - filter("E"."GRP_ID"='****')
25 - access("E"."EHUB_GRP_ID"="D"."*****")
26 - filter("A"."SOR_CD"='***')
27 - access("A"."EHUB_MBR_ID"="B"."*****")
28 - access("F"."PROD_CD"="C"."*****")
29 - filter("F"."PLAN_TYPE_CD"='****')
--------------------------------------------------------------------------------------------------------------------------------------------------------
Note
Plan hash value: 2232660988
Predicate Information (identified by operation id):
| 0 | SELECT STATEMENT | | 1 | 161 | 2775 (1)| 00:00:01 | | | |
| 1 | SORT AGGREGATE | | 1 | 161 | | | | | |
| 2 | PX COORDINATOR | | | | | | | | |
| 3 | PX SEND QC (RANDOM) | :TQ10003 | 1 | 161 | | | Q1,03 | P->S | QC (RAND) |
| 4 | SORT AGGREGATE | | 1 | 161 | | | Q1,03 | PCWP | |
| 5 | NESTED LOOPS | | 1 | 161 | 2775 (1)| 00:00:01 | Q1,03 | PCWP | |
| 6 | NESTED LOOPS | | 12 | 161 | 2775 (1)| 00:00:01 | Q1,03 | PCWP | |
| 7 | NESTED LOOPS | | 1 | 147 | 2771 (1)| 00:00:01 | Q1,03 | PCWP | |
| 8 | NESTED LOOPS | | 1 | 128 | 2771 (1)| 00:00:01 | Q1,03 | PCWP | |
| 9 | NESTED LOOPS | | 1 | 108 | 2770 (1)| 00:00:01 | Q1,03 | PCWP | |
| 10 | NESTED LOOPS | | 1 | 92 | 2770 (1)| 00:00:01 | Q1,03 | PCWP | |
| 11 | BUFFER SORT | | | | | | Q1,03 | PCWC | |
| 12 | PX RECEIVE | | | | | | Q1,03 | PCWP | |
| 13 | PX SEND HASH | :TQ10001 | | | | | Q1,01 | P->P | HASH |
| 15 | BUFFER SORT | | | | | | Q1,01 | PCWC | |
| 16 | PX RECEIVE | | 3845 | | 9 (0)| 00:00:01 | Q1,01 | PCWP | |
| 17 | PX SEND HASH (BLOCK ADDRESS) | :TQ10000 | 3845 | | 9 (0)| 00:00:01 | Q1,00 | S->P | HASH (BLOCK|
| 18 | PX SELECTOR | | | | | | Q1,00 | SCWC | |
| 20 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_MBR_CNTRCT | 1 | 39 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | TQ |IN-OUT| PQ Distrib |
|* 14 | TABLE ACCESS BY INDEX ROWID BATCHED| EHUB_SDS_CVRG | 1 | 53 | 2769 (1)| 00:00:01 | Q1,01 | PCWP | |
|* 19 | INDEX RANGE SCAN | IX4_EHUB_SDS_CVRG | 3845 | | 9 (0)| 00:00:01 | Q1,00 | SCWP | |
|* 21 | INDEX UNIQUE SCAN | PK_EHUB_SDS_MBR_CNTRCT | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 22 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_CNTRCT | 1 | 16 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 23 | INDEX UNIQUE SCAN | PK_EHUB_SDS_CNTRCT | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 24 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_GRP | 1 | 20 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 25 | INDEX UNIQUE SCAN | PK_EHUB_SDS_GRP | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 26 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_MBR | 1 | 19 | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 27 | INDEX UNIQUE SCAN | PK_EHUB_SDS_MBR | 1 | | 0 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 28 | INDEX RANGE SCAN | IX3_EHUB_SDS_ELGBLTY | 12 | | 1 (0)| 00:00:01 | Q1,03 | PCWP | |
|* 29 | TABLE ACCESS BY INDEX ROWID | EHUB_SDS_ELGBLTY | 990 | 13860 | 3 (0)| 00:00:01 | Q1,03 | PCWP | |