使用coe_xfr_sql_profile固定执行计划

##执行sql，形成执行计划

SQL> conn scott/tiger Connected. SQL> set autot trace           SQL> set serveroutput on SQL> select * from t1 where mgr=7698; 40 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 3617692013 -------------------------------------------------------------------------- | Id  | Operation         | Name | Rows  | Bytes | Cost (%CPU)| Time     | -------------------------------------------------------------------------- |   0 | SELECT STATEMENT  |      |    40 |  3480 |     4   (0)| 00:00:01 | |*  1 |  TABLE ACCESS FULL| T1   |    40 |  3480 |     4   (0)| 00:00:01 | -------------------------------------------------------------------------- Predicate Information (identified by operation id): ---------------------------------------------------    1 - filter("MGR"=7698) Note -----    - dynamic sampling used for this statement (level=2) Statistics ----------------------------------------------------------           0  recursive calls           0  db block gets           9  consistent gets           0  physical reads           0  redo size        2664  bytes sent via SQL*Net to client         541  bytes received via SQL*Net from client           4  SQL*Net roundtrips to/from client           0  sorts (memory)           0  sorts (disk)          40  rows processed SQL> create index idx_t1_mgr on t1(mgr); Index created. SQL> select /*+ index(t1 idx_t1_mgr) */ * from t1 where mgr=7698; 40 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 2410253714 ------------------------------------------------------------------------------------------ | Id  | Operation                   | Name       | Rows  | Bytes | Cost (%CPU)| Time     | ------------------------------------------------------------------------------------------ |   0 | SELECT STATEMENT            |            |    40 |  3480 |    10   (0)| 00:00:01 | |   1 |  TABLE ACCESS BY INDEX ROWID| T1         |    40 |  3480 |    10   (0)| 00:00:01 | |*  2 |   INDEX RANGE SCAN          | IDX_T1_MGR |    40 |       |     1   (0)| 00:00:01 | ------------------------------------------------------------------------------------------ Predicate Information (identified by operation id): ---------------------------------------------------    2 - access("MGR"=7698) Note -----    - dynamic sampling used for this statement (level=2) Statistics ----------------------------------------------------------           0  recursive calls           0  db block gets          11  consistent gets           0  physical reads           0  redo size        3183  bytes sent via SQL*Net to client         541  bytes received via SQL*Net from client           4  SQL*Net roundtrips to/from client           0  sorts (memory)           0  sorts (disk)          40  rows processed

##通过coe_xfr_sql_profile脚本生成sql脚本

SQL> @coe_xfr_sql_profile   ##生成没有走索引的sql脚本 Parameter 1: SQL_ID (required) Enter value for 1: 6dcqdf0u77n1q PLAN_HASH_VALUE AVG_ET_SECS --------------- -----------      3617692013        .002 Parameter 2: PLAN_HASH_VALUE (required) Enter value for 2: 3617692013 Values passed to coe_xfr_sql_profile: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SQL_ID         : "6dcqdf0u77n1q" PLAN_HASH_VALUE: "3617692013" 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_6dcqdf0u77n1q_3617692013.sql on TARGET system in order to create a custom SQL Profile with plan 3617692013 linked to adjusted sql_text. COE_XFR_SQL_PROFILE completed.

SQL>@coe_xfr_sql_profile             ##生成走索引的sql脚本 Parameter 1: SQL_ID (required) Enter value for 1: 6mbku0c4m6jc5 PLAN_HASH_VALUE AVG_ET_SECS --------------- -----------      2410253714        .001 Parameter 2: PLAN_HASH_VALUE (required) Enter value for 2: 2410253714 Values passed to coe_xfr_sql_profile: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ SQL_ID         : "6mbku0c4m6jc5" PLAN_HASH_VALUE: "2410253714" 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_6mbku0c4m6jc5_2410253714.sql on TARGET system in order to create a custom SQL Profile with plan 2410253714 linked to adjusted sql_text. COE_XFR_SQL_PROFILE completed. SQL>exit Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options

##替换内容，把coe_xfr_sql_profile_6mbku0c4m6jc5_2410253714的内容，替换到coe_xfr_sql_profile_6dcqdf0u77n1q_3617692013对应的位置

h := SYS.SQLPROF_ATTR( q'[BEGIN_OUTLINE_DATA]', q'[IGNORE_OPTIM_EMBEDDED_HINTS]', q'[OPTIMIZER_FEATURES_ENABLE('11.2.0.4')]', q'[DB_VERSION('11.2.0.4')]', q'[ALL_ROWS]', q'[OUTLINE_LEAF(@"SEL$1")]', q'[INDEX_RS_ASC(@"SEL$1" "T1"@"SEL$1" ("T1"."MGR"))]', q'[END_OUTLINE_DATA]');

##执行脚本

SQL> conn / as sysdba Connected. SQL> @coe_xfr_sql_profile_6dcqdf0u77n1q_3617692013.sql SQL> REM SQL> REM $Header: 215187.1 coe_xfr_sql_profile_6dcqdf0u77n1q_3617692013.sql 11.4.3.5 2017/05/23 carlos.sierra $ SQL> REM SQL> REM Copyright (c) 2000-2011, 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_6dcqdf0u77n1q_3617692013.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 6dcqdf0u77n1q based on plan hash SQL> REM   value 3617692013. 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_6dcqdf0u77n1q_3617692013.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_6dcqdf0u77n1q_3617692013'); SQL> REM   5. Be aware that using DBMS_SQLTUNE requires a license SQL> REM         for the Oracle Tuning Pack. SQL> REM SQL> WHENEVER SQLERROR EXIT SQL.SQLCODE; SQL> REM SQL> VAR signature NUMBER; SQL> REM SQL> DECLARE   2  sql_txt CLOB;   3  h       SYS.SQLPROF_ATTR;   4  BEGIN   5  sql_txt := q'[   6  select * from t1 where mgr=7698   7  ]';   8  h := SYS.SQLPROF_ATTR(   9  q'[BEGIN_OUTLINE_DATA]', 10  q'[IGNORE_OPTIM_EMBEDDED_HINTS]', 11  q'[OPTIMIZER_FEATURES_ENABLE('11.2.0.4')]', 12  q'[DB_VERSION('11.2.0.4')]', 13  q'[ALL_ROWS]', 14  q'[OUTLINE_LEAF(@"SEL$1")]', 15  q'[INDEX_RS_ASC(@"SEL$1" "T1"@"SEL$1" ("T1"."MGR"))]', 16  q'[END_OUTLINE_DATA]'); 17  :signature := DBMS_SQLTUNE.SQLTEXT_TO_SIGNATURE(sql_txt); 18  DBMS_SQLTUNE.IMPORT_SQL_PROFILE ( 19  sql_text    => sql_txt, 20  profile     => h, 21  name        => 'coe_6dcqdf0u77n1q_3617692013', 22  description => 'coe 6dcqdf0u77n1q 3617692013 '||:signature||'', 23  category    => 'DEFAULT', 24  validate    => TRUE, 25  replace     => TRUE, 26  force_match => FALSE /* TRUE:FORCE (match even when different literals in SQL). FALSE:EXACT (similar to CURSOR_SHARING) */ ); 27  END; 28  / PL/SQL procedure successfully completed. SQL> WHENEVER SQLERROR CONTINUE SQL> SET ECHO OFF;             SIGNATURE ---------------------   3774831808199813374 ... manual custom SQL Profile has been created COE_XFR_SQL_PROFILE_6dcqdf0u77n1q_3617692013 completed

##验证结果

SQL> select * from t1 where mgr=7698; 40 rows selected. Execution Plan ---------------------------------------------------------- Plan hash value: 2410253714 ------------------------------------------------------------------------------------------ | Id  | Operation                   | Name       | Rows  | Bytes | Cost (%CPU)| Time     | ------------------------------------------------------------------------------------------ |   0 | SELECT STATEMENT            |            |     6 |   522 |     2   (0)| 00:00:01 | |   1 |  TABLE ACCESS BY INDEX ROWID| T1         |     6 |   522 |     2   (0)| 00:00:01 | |*  2 |   INDEX RANGE SCAN          | IDX_T1_MGR |     2 |       |     1   (0)| 00:00:01 | ------------------------------------------------------------------------------------------ Predicate Information (identified by operation id): ---------------------------------------------------    2 - access("MGR"=7698) Note -----    - SQL profile "coe_6dcqdf0u77n1q_3617692013" used for this statement Statistics ----------------------------------------------------------           0  recursive calls           0  db block gets          11  consistent gets           0  physical reads           0  redo size        3183  bytes sent via SQL*Net to client         541  bytes received via SQL*Net from client           4  SQL*Net roundtrips to/from client           0  sorts (memory)           0  sorts (disk)          40  rows processed

##备注，sql语句中有绑定变量，可以使用变量替换或者使用匿名块

var v number(4);  ##varchar(10) exec  :n :=7698 ; select * from t1 where mgr= :n;

DECLARE V_SQL VARCHAR2(300);  ##varchar BEGIN V_SQL := 'select * from t1 where mgr=:1'; EXECUTE IMMEDIATE V_SQL USING 7698;  ##using 后面多个参数逗号分隔 END; /

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