执行计划多版本查看

-- Create/Recreate indexes 
create unique index KLNL_DKKHMX_IDX1 on KLNL_DKKHMX (MINGXIBH, DKJIEJUH, FARENDMA)
  tablespace USERS
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );
create index KLNL_DKKHMX_IDX3 on KLNL_DKKHMX (DKJIEJUH, FARENDMA)
  tablespace USERS
  pctfree 10
  initrans 2
  maxtrans 255
  storage
  (
    initial 64K
    next 1M
    minextents 1
    maxextents unlimited
  );
  
  
  
  1.
  select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao
from klnl_dkkhmx
where dkjiejuh = '20151020000935'
and farendma = '9999'
and trim(translate(mingxibh, '0123456789', ' ')) is null;


通过ash找到正在执行的慢sql

select a.session_id,
       a.sql_id,
       a.machine,
       a.blocking_session,
       a.sample_time,
       a.module,
       a.PROGRAM,
       a.event,
       b.SQL_TEXT
  from v$active_session_history a, v$sqlarea b
 where a.sql_id = b.sql_id;
 
 
 
select sql_id,
       sql_text,
       version_count,
       loads,
       hash_value,
       address,
       plan_hash_value,
       old_hash_value,
       last_active_child_address
from v$sqlarea a
where a.sql_id='7cvwmagyjx7zt'


SQL_ID	7cvwmagyjx7zt
SQL_TEXT	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 
VERSION_COUNT	1
LOADS	1
HASH_VALUE	4246642681
ADDRESS	00000000F242BB00
PLAN_HASH_VALUE	3928807798
OLD_HASH_VALUE	696269501
LAST_ACTIVE_CHILD_ADDRESS	00000000F28CBED8





select sql_id,
       sql_text,
       a.loaded_versions,
       hash_value,
       address,
       a.old_hash_value,
       a.plan_hash_value,
      a.child_number,
      a.child_address
from v$sql a
where a.sql_id='7cvwmagyjx7zt'



SQL_ID	7cvwmagyjx7zt
SQL_TEXT	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 
LOADED_VERSIONS	1
HASH_VALUE	4246642681
ADDRESS	00000000F242BB00
OLD_HASH_VALUE	696269501
PLAN_HASH_VALUE	3928807798
CHILD_NUMBER	0
CHILD_ADDRESS	00000000F28CBED8



--根据sql_id 查看执行计划

SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('SQL_ID',SQL_CHILD_NUMBER));

SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',0));

PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 0
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 3928807798
 
----------------------------------------------------------------------------------
| Id  | Operation          | Name        | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------------
|   0 | SELECT STATEMENT   |             |       |       | 88646 (100)|          |
|   1 |  SORT AGGREGATE    |             |     1 |    46 |            |          |
|*  2 |   TABLE ACCESS FULL| KLNL_DKKHMX |     3 |   138 | 88646   (1)| 00:17:44 |
----------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(("DKJIEJUH"='20151020000935' AND 
              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND 
              "FARENDMA"='9999'))
 


 
 
 等价于
 
 SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt'));
PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 0
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 3928807798
 
----------------------------------------------------------------------------------
| Id  | Operation          | Name        | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------------
|   0 | SELECT STATEMENT   |             |       |       | 88646 (100)|          |
|   1 |  SORT AGGREGATE    |             |     1 |    46 |            |          |
|*  2 |   TABLE ACCESS FULL| KLNL_DKKHMX |     3 |   138 | 88646   (1)| 00:17:44 |
----------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(("DKJIEJUH"='20151020000935' AND 
              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND 
              "FARENDMA"='9999'))
 


 
2.

create  index KLNL_DKKHMX_IDX1 on KLNL_DKKHMX (MINGXIBH, DKJIEJUH, FARENDMA)


 select sql_id,
       sql_text,
       version_count,
       loads,
       hash_value,
       address,
       plan_hash_value,
       old_hash_value,
       last_active_child_address
from v$sqlarea a
where a.sql_id='7cvwmagyjx7zt'

SQL_ID	7cvwmagyjx7zt
SQL_TEXT	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 
VERSION_COUNT	2
LOADS	3
HASH_VALUE	4246642681
ADDRESS	00000000F242BB00
PLAN_HASH_VALUE	2367693466
OLD_HASH_VALUE	696269501
LAST_ACTIVE_CHILD_ADDRESS	00000000F28389F0



select sql_id,
       sql_text,
       a.loaded_versions,
       hash_value,
       address,
       a.old_hash_value,
       a.plan_hash_value,
      a.child_number,
      a.child_address
from v$sql a
where a.sql_id='7cvwmagyjx7zt';


   	SQL_ID	SQL_TEXT	LOADED_VERSIONS	HASH_VALUE	ADDRESS	OLD_HASH_VALUE	PLAN_HASH_VALUE	CHILD_NUMBER	CHILD_ADDRESS
1	7cvwmagyjx7zt	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 	1	4246642681	00000000F242BB00	696269501	2367693466	0	00000000F28CBED8
2	7cvwmagyjx7zt	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 	1	4246642681	00000000F242BB00	696269501	2367693466	1	00000000F28389F0


 SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt'));
 
 PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 0
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 2367693466
 
------------------------------------------------------------------------------------------
| Id  | Operation             | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT      |                  |       |       | 15578 (100)|          |
|   1 |  SORT AGGREGATE       |                  |     1 |    46 |            |          |
|*  2 |   INDEX FAST FULL SCAN| KLNL_DKKHMX_IDX1 |     3 |   138 | 15578   (1)| 00:03:07 |
------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(("DKJIEJUH"='20151020000935' AND 
              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND "FARENDMA"='9999'))
 

 
 

SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',0));

PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 0
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 2367693466
 
------------------------------------------------------------------------------------------
| Id  | Operation             | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT      |                  |       |       | 15578 (100)|          |
|   1 |  SORT AGGREGATE       |                  |     1 |    46 |            |          |
|*  2 |   INDEX FAST FULL SCAN| KLNL_DKKHMX_IDX1 |     3 |   138 | 15578   (1)| 00:03:07 |
------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(("DKJIEJUH"='20151020000935' AND 
              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND "FARENDMA"='9999'))
 

 

SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',1));

PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 1
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 2367693466
 
------------------------------------------------------------------------------------------
| Id  | Operation             | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT      |                  |       |       | 15578 (100)|          |
|   1 |  SORT AGGREGATE       |                  |     1 |    46 |            |          |
|*  2 |   INDEX FAST FULL SCAN| KLNL_DKKHMX_IDX1 |     3 |   138 | 15578   (1)| 00:03:07 |
------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(("DKJIEJUH"='20151020000935' AND 
              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND "FARENDMA"='9999'))
 
Note
-----
   - cardinality feedback used for this statement
 

 
 
SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',2));

SQL_ID: 7cvwmagyjx7zt, child number: 2 cannot be found 
 

 
 
3.create index KLNL_DKKHMX_IDX2 on KLNL_DKKHMX (DKJIEJUH, FARENDMA);
 
 select sql_id,
       sql_text,
       version_count,
       loads,
       hash_value,
       address,
       plan_hash_value,
       old_hash_value,
       last_active_child_address
from v$sqlarea a
where a.sql_id='7cvwmagyjx7zt'


SQL_ID	7cvwmagyjx7zt
SQL_TEXT	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 
VERSION_COUNT	3
LOADS	5
HASH_VALUE	4246642681
ADDRESS	00000000F242BB00
PLAN_HASH_VALUE	992735451
OLD_HASH_VALUE	696269501
LAST_ACTIVE_CHILD_ADDRESS	00000000E7BE4F98





select sql_id,
       sql_text,
       a.loaded_versions,
       hash_value,
       address,
       a.old_hash_value,
       a.plan_hash_value,
      a.child_number,
      a.child_address
from v$sql a
where a.sql_id='7cvwmagyjx7zt';

   	SQL_ID	SQL_TEXT	LOADED_VERSIONS	HASH_VALUE	ADDRESS	OLD_HASH_VALUE	PLAN_HASH_VALUE	CHILD_NUMBER	CHILD_ADDRESS
1	7cvwmagyjx7zt	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 	1	4246642681	00000000F242BB00	696269501	2367693466	0	00000000F28CBED8
2	7cvwmagyjx7zt	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 	1	4246642681	00000000F242BB00	696269501	992735451	1	00000000F28389F0
3	7cvwmagyjx7zt	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx where dkjiejuh = '20151020000935' and farendma = '9999' and trim(translate(mingxibh, '0123456789', ' ')) is null 	1	4246642681	00000000F242BB00	696269501	992735451	2	00000000E7BE4F98

 SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt'));
 
    	PLAN_TABLE_OUTPUT
1	SQL_ID  7cvwmagyjx7zt, child number 0
2	-------------------------------------
3	select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
4	where dkjiejuh = '20151020000935' and farendma = '9999' and 
5	trim(translate(mingxibh, '0123456789', ' ')) is null
6	 
7	Plan hash value: 2367693466
8	 
9	------------------------------------------------------------------------------------------
10	| Id  | Operation             | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
11	------------------------------------------------------------------------------------------
12	|   0 | SELECT STATEMENT      |                  |       |       | 15578 (100)|          |
13	|   1 |  SORT AGGREGATE       |                  |     1 |    46 |            |          |
14	|*  2 |   INDEX FAST FULL SCAN| KLNL_DKKHMX_IDX1 |     3 |   138 | 15578   (1)| 00:03:07 |
15	------------------------------------------------------------------------------------------
16	 
17	Predicate Information (identified by operation id):
18	---------------------------------------------------
19	 
20	   2 - filter(("DKJIEJUH"='20151020000935' AND 
21	              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND "FARENDMA"='9999'))
22	 







SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',0));

PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 0
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 2367693466
 
------------------------------------------------------------------------------------------
| Id  | Operation             | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT      |                  |       |       | 15578 (100)|          |
|   1 |  SORT AGGREGATE       |                  |     1 |    46 |            |          |
|*  2 |   INDEX FAST FULL SCAN| KLNL_DKKHMX_IDX1 |     3 |   138 | 15578   (1)| 00:03:07 |
------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(("DKJIEJUH"='20151020000935' AND 
              TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL AND "FARENDMA"='9999'))
 
SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',1));
 
 PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 1
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 992735451
 
-------------------------------------------------------------------------------------------------
| Id  | Operation                    | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
-------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT             |                  |       |       |    54 (100)|          |
|   1 |  SORT AGGREGATE              |                  |     1 |    46 |            |          |
|*  2 |   TABLE ACCESS BY INDEX ROWID| KLNL_DKKHMX      |     3 |   138 |    54   (0)| 00:00:01 |
|*  3 |    INDEX RANGE SCAN          | KLNL_DKKHMX_IDX2 |    55 |       |     3   (0)| 00:00:01 |
-------------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL)
   3 - access("DKJIEJUH"='20151020000935' AND "FARENDMA"='9999')
 

 
 
SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY_CURSOR('7cvwmagyjx7zt',2));


PLAN_TABLE_OUTPUT
SQL_ID  7cvwmagyjx7zt, child number 2
-------------------------------------
select nvl(max(to_number(mingxibh)), 0) as lMaxXuhao from klnl_dkkhmx 
where dkjiejuh = '20151020000935' and farendma = '9999' and 
trim(translate(mingxibh, '0123456789', ' ')) is null
 
Plan hash value: 992735451
 
-------------------------------------------------------------------------------------------------
| Id  | Operation                    | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
-------------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT             |                  |       |       |   180 (100)|          |
|   1 |  SORT AGGREGATE              |                  |     1 |    46 |            |          |
|*  2 |   TABLE ACCESS BY INDEX ROWID| KLNL_DKKHMX      |    64 |  2944 |   180   (0)| 00:00:03 |
|*  3 |    INDEX RANGE SCAN          | KLNL_DKKHMX_IDX2 |   192 |       |     3   (0)| 00:00:01 |
-------------------------------------------------------------------------------------------------
 
Predicate Information (identified by operation id):
---------------------------------------------------
 
   2 - filter(TRIM(TRANSLATE("MINGXIBH",'0123456789',' ')) IS NULL)
   3 - access("DKJIEJUH"='20151020000935' AND "FARENDMA"='9999')
 
Note
-----
   - cardinality feedback used for this statement