create table t as select * from scott.emp;
select ename,empno from t where empno=7788;
ENAME EMPNO
-------------------- ----------
SCOTT 7788
SQL> select * from table(dbms_xplan.display_cursor(null,null,'advanced'));
PLAN_TABLE_OUTPUT
------------------------------------------------------------------------------------------------------------------------
SQL_ID 6wk7ggz469b7u, child number 0
-------------------------------------
select ename,empno from t where empno=7788
Plan hash value: 1601196873
--------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
--------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | | | 2 (100)| |
|* 1 | TABLE ACCESS FULL| T | 1 | 20 | 2 (0)| 00:00:01 |
--------------------------------------------------------------------------
create index idx_t on t(empno,ename);
@coe_xfr_sql_profile.sql 6wk7ggz469b7u 1601196873
coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql
SQL> select ename,empno from t where empno=7788;
ENAME EMPNO
-------------------- ----------
SCOTT 7788
SQL> select * from table(dbms_xplan.display_cursor(null,null,'advanced'));
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
SQL_ID 6wk7ggz469b7u, child number 0
-------------------------------------
select ename,empno from t where empno=7788
Plan hash value: 2296882198
--------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
--------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | | | 1 (100)| |
|* 1 | INDEX RANGE SCAN| IDX_T | 1 | 20 | 1 (0)| 00:00:01 |
@coe_xfr_sql_profile.sql 6wk7ggz469b7u 2296882198
coe_xfr_sql_profile_6wk7ggz469b7u_2296882198.sql2、生成脚本
SQL> @coe_xfr_sql_profile.sql 6wk7ggz469b7u 1601196873
Parameter 1:
SQL_ID (required)
PLAN_HASH_VALUE AVG_ET_SECS
--------------- -----------
2296882198 .002
Parameter 2:
PLAN_HASH_VALUE (required)
Values passed to coe_xfr_sql_profile:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SQL_ID : "6wk7ggz469b7u"
PLAN_HASH_VALUE: "1601196873"
SQL>BEGIN
2 IF :sql_text IS NULL THEN
3 RAISE_APPLICATION_ERROR(-20100, 'SQL_TEXT for SQL_ID &&sql_id. was not found in memory (gv$sqltext_with_newlines) or AWR (dba_hist_sqltext).');
4 END IF;
5 END;
6 /
SQL>SET TERM OFF;
SQL>BEGIN
2 IF :other_xml IS NULL THEN
3 RAISE_APPLICATION_ERROR(-20101, 'PLAN for SQL_ID &&sql_id. and PHV &&plan_hash_value. was not found in memory (gv$sql_plan) or AWR (dba_hist_sql_plan).');
4 END IF;
5 END;
6 /
SQL>SET TERM OFF;
Execute coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql
on TARGET system in order to create a custom SQL Profile
with plan 1601196873 linked to adjusted sql_text.
COE_XFR_SQL_PROFILE completed.3、运行脚本
修改脚本coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql 参数
force_match => TRUE （原值为FALSE）
SQL>@coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql
SQL>REM
SQL>REM $Header: 215187.1 coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql 11.4.4.4 2023/04/14 carlos.sierra $
SQL>REM
SQL>REM Copyright (c) 2000-2012, Oracle Corporation. All rights reserved.
SQL>REM
SQL>REM AUTHOR
SQL>REM [email protected]
SQL>REM
SQL>REM SCRIPT
SQL>REM coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql
SQL>REM
SQL>REM DESCRIPTION
SQL>REM This script is generated by coe_xfr_sql_profile.sql
SQL>REM It contains the SQL*Plus commands to create a custom
SQL>REM SQL Profile for SQL_ID 6wk7ggz469b7u based on plan hash
SQL>REM value 1601196873.
SQL>REM The custom SQL Profile to be created by this script
SQL>REM will affect plans for SQL commands with signature
SQL>REM matching the one for SQL Text below.
SQL>REM Review SQL Text and adjust accordingly.
SQL>REM
SQL>REM PARAMETERS
SQL>REM None.
SQL>REM
SQL>REM EXAMPLE
SQL>REM SQL> START coe_xfr_sql_profile_6wk7ggz469b7u_1601196873.sql;
SQL>REM
SQL>REM NOTES
SQL>REM 1. Should be run as SYSTEM or SYSDBA.
SQL>REM 2. User must have CREATE ANY SQL PROFILE privilege.
SQL>REM 3. SOURCE and TARGET systems can be the same or similar.
SQL>REM 4. To drop this custom SQL Profile after it has been created:
SQL>REM EXEC DBMS_SQLTUNE.DROP_SQL_PROFILE('coe_6wk7ggz469b7u_1601196873');
SQL>REM 5. Be aware that using DBMS_SQLTUNE requires a license
SQL>REM for the Oracle Tuning Pack.
SQL>REM 6. If you modified a SQL putting Hints in order to produce a desired
SQL>REM Plan, you can remove the artifical Hints from SQL Text pieces below.
SQL>REM By doing so you can create a custom SQL Profile for the original
SQL>REM SQL but with the Plan captured from the modified SQL (with Hints).
SQL>REM
SQL>WHENEVER SQLERROR EXIT SQL.SQLCODE;
SQL>REM
SQL>VAR signature NUMBER;
SQL>VAR signaturef NUMBER;
SQL>REM
SQL>DECLARE
2 sql_txt CLOB;
3 h SYS.SQLPROF_ATTR;
4 PROCEDURE wa (p_line IN VARCHAR2) IS
5 BEGIN
6 DBMS_LOB.WRITEAPPEND(sql_txt, LENGTH(p_line), p_line);
7 END wa;
8 BEGIN
9 DBMS_LOB.CREATETEMPORARY(sql_txt, TRUE);
10 DBMS_LOB.OPEN(sql_txt, DBMS_LOB.LOB_READWRITE);
11 -- SQL Text pieces below do not have to be of same length.
12 -- So if you edit SQL Text (i.e. removing temporary Hints),
13 -- there is no need to edit or re-align unmodified pieces.
14 wa(q'[select ename,empno from t where empno=7788]');
15 DBMS_LOB.CLOSE(sql_txt);
16 h := SYS.SQLPROF_ATTR(
17 q'[BEGIN_OUTLINE_DATA]',
18 q'[IGNORE_OPTIM_EMBEDDED_HINTS]',
19 q'[OPTIMIZER_FEATURES_ENABLE('19.1.0')]',
20 q'[DB_VERSION('19.1.0')]',
21 q'[ALL_ROWS]',
22 q'[OUTLINE_LEAF(@"SEL$1")]',
23 q'[FULL(@"SEL$1" "T"@"SEL$1")]',
24 q'[END_OUTLINE_DATA]');
25 :signature := DBMS_SQLTUNE.SQLTEXT_TO_SIGNATURE(sql_txt);
26 :signaturef := DBMS_SQLTUNE.SQLTEXT_TO_SIGNATURE(sql_txt, TRUE);
27 DBMS_SQLTUNE.IMPORT_SQL_PROFILE (
28 sql_text => sql_txt,
29 profile => h,
30 name => 'coe_6wk7ggz469b7u_1601196873',
31 description => 'coe 6wk7ggz469b7u 1601196873 '||:signature||' '||:signaturef||'',
32 category => 'DEFAULT',
33 validate => TRUE,
34 replace => TRUE,
35 force_match => TRUE /* TRUE:FORCE (match even when different literals in SQL). FALSE:EXACT (similar to CURSOR_SHARING) */ );
36 DBMS_LOB.FREETEMPORARY(sql_txt);
37 END;
38 /
PL/SQL procedure successfully completed.
SQL>WHENEVER SQLERROR CONTINUE
SQL>SET ECHO OFF;
SIGNATURE
---------------------
5123411738372664700
SIGNATUREF
---------------------
3065794480876030305
... manual custom SQL Profile has been created
COE_XFR_SQL_PROFILE_6wk7ggz469b7u_1601196873 completed4、验证
SQL>select ename,empno from t where empno=7788;
ENAME EMPNO
-------------------- ----------
SCOTT 7788
SQL>select * from table(dbms_xplan.display_cursor(null,null,'advanced'));
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
SQL_ID 6wk7ggz469b7u, child number 0
-------------------------------------
select ename,empno from t where empno=7788
Plan hash value: 1601196873
--------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
--------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | | | 2 (100)| |
|* 1 | TABLE ACCESS FULL| T | 1 | 20 | 2 (0)| 00:00:01 |
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
--------------------------------------------------------------------------
Query Block Name / Object Alias (identified by operation id):
-------------------------------------------------------------
1 - SEL$1 / T@SEL$1
Outline Data
-------------
/*+
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
BEGIN_OUTLINE_DATA
IGNORE_OPTIM_EMBEDDED_HINTS
OPTIMIZER_FEATURES_ENABLE('19.1.0')
DB_VERSION('19.1.0')
ALL_ROWS
OUTLINE_LEAF(@"SEL$1")
FULL(@"SEL$1" "T"@"SEL$1")
END_OUTLINE_DATA
*/
Predicate Information (identified by operation id):
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
---------------------------------------------------
1 - filter("EMPNO"=7788)
Column Projection Information (identified by operation id):
-----------------------------------------------------------
1 - "EMPNO"[NUMBER,22], "ENAME"[VARCHAR2,10]
Hint Report (identified by operation id / Query Block Name / Object Alias):
Total hints for statement: 5
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
---------------------------------------------------------------------------
0 - STATEMENT
- ALL_ROWS
- DB_VERSION('19.1.0')
- IGNORE_OPTIM_EMBEDDED_HINTS
- OPTIMIZER_FEATURES_ENABLE('19.1.0')
1 - SEL$1 / T@SEL$1
- FULL(@"SEL$1" "T"@"SEL$1")
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
Note
-----
- dynamic statistics used: dynamic sampling (level=2)
- SQL profile coe_6wk7ggz469b7u_1601196873 used for this statement
Query Block Registry:
---------------------
<q o="2" f="y"><n><![CDATA[SEL$1]]></n><f><h><t><![CDATA[T]]></t><s><![C
DATA[SEL$1]]></s></h></f></q>
PLAN_TABLE_OUTPUT
--------------------------------------------------------------------------------
67 rows selected.