Manual creation of SQL Profiles in Oracle Database
15 min readSQL Profiles are a powerful tool to improve performance of SQL queries in your Oracle Database.
A SQL profile is a database object that contains auxiliary statistics specific to a SQL statement.
Conceptually, a SQL profile is to a SQL statement what object-level statistics are to a table or index. SQL profiles are created when a DBA invokes SQL Tuning Advisor.
SQL profile is a collection of auxiliary statistics on a query, including all tables and columns referenced in the query. The profile is stored in the data dictionary. The optimizer uses this information during optimization to determine the most optimal plan.
NOTE: TAKE SNIP OF PREVIOUS AND CURRENT PLAN HASH VALUE WITH SQLID.
STEP-1: CHECK FOR PERMORMENCE AND PHV RELATED STUFF
set lines 155
col execs for 999,999,999
col avg_etime for 999,999.999
col avg_lio for 999,999,999.9
col begin_interval_time for a30
col node for 99999
break on plan_hash_value on startup_time skip 1
select ss.snap_id, ss.instance_number node, begin_interval_time, sql_id, plan_hash_value,
nvl(executions_delta,0) execs,
(elapsed_time_delta/decode(nvl(executions_delta,0),0,1,executions_delta))/1000000 avg_etime,
(buffer_gets_delta/decode(nvl(buffer_gets_delta,0),0,1,executions_delta)) avg_lio
from DBA_HIST_SQLSTAT S, DBA_HIST_SNAPSHOT SS
where sql_id = nvl('&sql_id','4dqs2k5tynk61')
and ss.snap_id = S.snap_id
and ss.instance_number = S.instance_number
and executions_delta > 0
order by 1, 2, 3
/
SNAP_ID NODE BEGIN_INTERVAL_TIME SQL_ID PLAN_HASH_VALUE EXECS AVG_ETIME AVG_LIO
---------- ------ ------------------------------ ------------- --------------- ------------ ------------ --------------
91470 1 03-JAN-21 11.00.51.458 PM byjakj1g6u7ra 930483739 1 1,651.233 4,140,051.0
91475 1 04-JAN-21 01.30.27.705 AM byjakj1g6u7ra 3363986154 2 171.964 650,312.0
91477 1 04-JAN-21 02.30.39.841 AM byjakj1g6u7ra 1 312.828 442,130.0
STEP-2: CREATE PROFILE BY USING SCRIPT WITH SAME NAME.
Below are the contents that need to be feed in coe_xfr_sql_profile.sql file.
SPO coe_xfr_sql_profile.log;
SET DEF ON TERM OFF ECHO ON FEED OFF VER OFF HEA ON LIN 2000 PAGES 100 LONG 8000000 LONGC 800000 TRIMS ON TI OFF TIMI OFF SERVEROUT ON SIZE 1000000 NUMF "" SQLP SQL>;
SET SERVEROUT ON SIZE UNL;
REM
REM $Header: 215187.1 coe_xfr_sql_profile.sql 11.4.5.5 2013/03/01 carlos.sierra $
REM
REM Copyright (c) 2000-2013, Oracle Corporation. All rights reserved.
REM
REM AUTHOR
REM carlos.sierra@oracle.com
REM
REM SCRIPT
REM coe_xfr_sql_profile.sql
REM
REM DESCRIPTION
REM This script generates another that contains the commands to
REM create a manual custom SQL Profile out of a known plan from
REM memory or AWR. The manual custom profile can be implemented
REM into the same SOURCE system where the plan was retrieved,
REM or into another similar TARGET system that has same schema
REM objects referenced by the SQL that generated the known plan.
REM
REM PRE-REQUISITES
REM 1. Oracle Tuning Pack license.
REM
REM PARAMETERS
REM 1. SQL_ID (required)
REM 2. Plan Hash Value for which a manual custom SQL Profile is
REM needed (required). A list of known plans is presented.
REM You may choose from list provided or enter a valid phv
REM from a version of the SQL modified with Hints.
REM
REM EXECUTION
REM 1. Connect into SQL*Plus as user with access to data dictionary.
REM Do not use SYS.
REM 2. Execute script coe_xfr_sql_profile.sql passing SQL_ID and
REM plan hash value (parameters can be passed inline or until
REM requested).
REM
REM EXAMPLE
REM # sqlplus system
REM SQL> START coe_xfr_sql_profile.sql [SQL_ID] [PLAN_HASH_VALUE];
REM SQL> START coe_xfr_sql_profile.sql gnjy0mn4y9pbm 2055843663;
REM SQL> START coe_xfr_sql_profile.sql gnjy0mn4y9pbm;
REM SQL> START coe_xfr_sql_profile.sql;
REM
REM NOTES
REM 1. For possible errors see coe_xfr_sql_profile.log
REM 2. If SQLT is installed in SOURCE, you can use instead:
REM sqlt/utl/sqltprofile.sql
REM 3. Be aware that using DBMS_SQLTUNE requires a license for
REM Oracle Tuning Pack.
REM 4. Use a DBA user but not SYS.
REM 5. If you get "ORA-06532: Subscript outside of limit, ORA-06512: at line 1"
REM Then you may consider this change (only in a test and disposable system):
REM create or replace TYPE sys.sqlprof_attr AS VARRAY(5000) of VARCHAR2(500);
REM
SET TERM ON ECHO OFF;
PRO
PRO Parameter 1:
PRO SQL_ID (required)
PRO
DEF sql_id = '&1';
PRO
WITH
p AS (
SELECT plan_hash_value
FROM gv$sql_plan
WHERE sql_id = TRIM('&&sql_id.')
AND other_xml IS NOT NULL
UNION
SELECT plan_hash_value
FROM dba_hist_sql_plan
WHERE sql_id = TRIM('&&sql_id.')
AND other_xml IS NOT NULL ),
m AS (
SELECT plan_hash_value,
SUM(elapsed_time)/SUM(executions) avg_et_secs
FROM gv$sql
WHERE sql_id = TRIM('&&sql_id.')
AND executions > 0
GROUP BY
plan_hash_value ),
a AS (
SELECT plan_hash_value,
SUM(elapsed_time_total)/SUM(executions_total) avg_et_secs
FROM dba_hist_sqlstat
WHERE sql_id = TRIM('&&sql_id.')
AND executions_total > 0
GROUP BY
plan_hash_value )
SELECT p.plan_hash_value,
ROUND(NVL(m.avg_et_secs, a.avg_et_secs)/1e6, 3) avg_et_secs
FROM p, m, a
WHERE p.plan_hash_value = m.plan_hash_value(+)
AND p.plan_hash_value = a.plan_hash_value(+)
ORDER BY
avg_et_secs NULLS LAST;
PRO
PRO Parameter 2:
PRO PLAN_HASH_VALUE (required)
PRO
DEF plan_hash_value = '&2';
PRO
PRO Values passed to coe_xfr_sql_profile:
PRO ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PRO SQL_ID : "&&sql_id."
PRO PLAN_HASH_VALUE: "&&plan_hash_value."
PRO
SET TERM OFF ECHO ON;
WHENEVER SQLERROR EXIT SQL.SQLCODE;
-- trim parameters
COL sql_id NEW_V sql_id FOR A30;
COL plan_hash_value NEW_V plan_hash_value FOR A30;
SELECT TRIM('&&sql_id.') sql_id, TRIM('&&plan_hash_value.') plan_hash_value FROM DUAL;
VAR sql_text CLOB;
VAR sql_text2 CLOB;
VAR other_xml CLOB;
EXEC :sql_text := NULL;
EXEC :sql_text2 := NULL;
EXEC :other_xml := NULL;
-- get sql_text from memory
DECLARE
l_sql_text VARCHAR2(32767);
BEGIN -- 10g see bug 5017909
FOR i IN (SELECT DISTINCT piece, sql_text
FROM gv$sqltext_with_newlines
WHERE sql_id = TRIM('&&sql_id.')
ORDER BY 1, 2)
LOOP
IF :sql_text IS NULL THEN
DBMS_LOB.CREATETEMPORARY(:sql_text, TRUE);
DBMS_LOB.OPEN(:sql_text, DBMS_LOB.LOB_READWRITE);
END IF;
-- removes NUL characters
l_sql_text := REPLACE(i.sql_text, CHR(00), ' ');
-- adds a NUL character at the end of each line
DBMS_LOB.WRITEAPPEND(:sql_text, LENGTH(l_sql_text) + 1, l_sql_text||CHR(00));
END LOOP;
-- if found in memory then sql_text is not null
IF :sql_text IS NOT NULL THEN
DBMS_LOB.CLOSE(:sql_text);
END IF;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('getting sql_text from memory: '||SQLERRM);
:sql_text := NULL;
END;
/
SELECT :sql_text FROM DUAL;
-- get sql_text from awr
DECLARE
l_sql_text VARCHAR2(32767);
l_clob_size NUMBER;
l_offset NUMBER;
BEGIN
IF :sql_text IS NULL OR NVL(DBMS_LOB.GETLENGTH(:sql_text), 0) = 0 THEN
SELECT sql_text
INTO :sql_text2
FROM dba_hist_sqltext
WHERE sql_id = TRIM('&&sql_id.')
AND sql_text IS NOT NULL
AND ROWNUM = 1;
END IF;
-- if found in awr then sql_text2 is not null
IF :sql_text2 IS NOT NULL THEN
l_clob_size := NVL(DBMS_LOB.GETLENGTH(:sql_text2), 0);
l_offset := 1;
DBMS_LOB.CREATETEMPORARY(:sql_text, TRUE);
DBMS_LOB.OPEN(:sql_text, DBMS_LOB.LOB_READWRITE);
-- store in clob as 64 character pieces plus a NUL character at the end of each piece
WHILE l_offset < l_clob_size
LOOP
IF l_clob_size - l_offset > 64 THEN
l_sql_text := REPLACE(DBMS_LOB.SUBSTR(:sql_text2, 64, l_offset), CHR(00), ' ');
ELSE -- last piece
l_sql_text := REPLACE(DBMS_LOB.SUBSTR(:sql_text2, l_clob_size - l_offset + 1, l_offset), CHR(00), ' ');
END IF;
DBMS_LOB.WRITEAPPEND(:sql_text, LENGTH(l_sql_text) + 1, l_sql_text||CHR(00));
l_offset := l_offset + 64;
END LOOP;
DBMS_LOB.CLOSE(:sql_text);
END IF;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('getting sql_text from awr: '||SQLERRM);
:sql_text := NULL;
END;
/
SELECT :sql_text2 FROM DUAL;
SELECT :sql_text FROM DUAL;
-- validate sql_text
SET TERM ON;
BEGIN
IF :sql_text IS NULL THEN
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).');
END IF;
END;
/
SET TERM OFF;
-- get other_xml from memory
BEGIN
FOR i IN (SELECT other_xml
FROM gv$sql_plan
WHERE sql_id = TRIM('&&sql_id.')
AND plan_hash_value = TO_NUMBER(TRIM('&&plan_hash_value.'))
AND other_xml IS NOT NULL
ORDER BY
child_number, id)
LOOP
:other_xml := i.other_xml;
EXIT; -- 1st
END LOOP;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('getting other_xml from memory: '||SQLERRM);
:other_xml := NULL;
END;
/
-- get other_xml from awr
BEGIN
IF :other_xml IS NULL OR NVL(DBMS_LOB.GETLENGTH(:other_xml), 0) = 0 THEN
FOR i IN (SELECT other_xml
FROM dba_hist_sql_plan
WHERE sql_id = TRIM('&&sql_id.')
AND plan_hash_value = TO_NUMBER(TRIM('&&plan_hash_value.'))
AND other_xml IS NOT NULL
ORDER BY
id)
LOOP
:other_xml := i.other_xml;
EXIT; -- 1st
END LOOP;
END IF;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('getting other_xml from awr: '||SQLERRM);
:other_xml := NULL;
END;
/
-- get other_xml from memory from modified SQL
BEGIN
IF :other_xml IS NULL OR NVL(DBMS_LOB.GETLENGTH(:other_xml), 0) = 0 THEN
FOR i IN (SELECT other_xml
FROM gv$sql_plan
WHERE plan_hash_value = TO_NUMBER(TRIM('&&plan_hash_value.'))
AND other_xml IS NOT NULL
ORDER BY
child_number, id)
LOOP
:other_xml := i.other_xml;
EXIT; -- 1st
END LOOP;
END IF;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('getting other_xml from memory: '||SQLERRM);
:other_xml := NULL;
END;
/
-- get other_xml from awr from modified SQL
BEGIN
IF :other_xml IS NULL OR NVL(DBMS_LOB.GETLENGTH(:other_xml), 0) = 0 THEN
FOR i IN (SELECT other_xml
FROM dba_hist_sql_plan
WHERE plan_hash_value = TO_NUMBER(TRIM('&&plan_hash_value.'))
AND other_xml IS NOT NULL
ORDER BY
id)
LOOP
:other_xml := i.other_xml;
EXIT; -- 1st
END LOOP;
END IF;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('getting other_xml from awr: '||SQLERRM);
:other_xml := NULL;
END;
/
SELECT :other_xml FROM DUAL;
-- validate other_xml
SET TERM ON;
BEGIN
IF :other_xml IS NULL THEN
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).');
END IF;
END;
/
SET TERM OFF;
-- generates script that creates sql profile in target system:
SET ECHO OFF;
PRO coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..sql.
SET FEED OFF LIN 666 TRIMS ON TI OFF TIMI OFF SERVEROUT ON SIZE 1000000 FOR WOR;
SET SERVEROUT ON SIZE UNL FOR WOR;
SPO OFF;
SPO coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..sql;
DECLARE
l_pos NUMBER;
l_clob_size NUMBER;
l_offset NUMBER;
l_sql_text VARCHAR2(32767);
l_len NUMBER;
l_hint VARCHAR2(32767);
BEGIN
DBMS_OUTPUT.PUT_LINE('SPO coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..log;');
DBMS_OUTPUT.PUT_LINE('SET ECHO ON TERM ON LIN 2000 TRIMS ON NUMF 99999999999999999999;');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM $Header: 215187.1 coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..sql 11.4.4.4 '||TO_CHAR(SYSDATE, 'YYYY/MM/DD')||' carlos.sierra $');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM Copyright (c) 2000-2012, Oracle Corporation. All rights reserved.');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM AUTHOR');
DBMS_OUTPUT.PUT_LINE('REM carlos.sierra@oracle.com');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM SCRIPT');
DBMS_OUTPUT.PUT_LINE('REM coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..sql');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM DESCRIPTION');
DBMS_OUTPUT.PUT_LINE('REM This script is generated by coe_xfr_sql_profile.sql');
DBMS_OUTPUT.PUT_LINE('REM It contains the SQL*Plus commands to create a custom');
DBMS_OUTPUT.PUT_LINE('REM SQL Profile for SQL_ID &&sql_id. based on plan hash');
DBMS_OUTPUT.PUT_LINE('REM value &&plan_hash_value..');
DBMS_OUTPUT.PUT_LINE('REM The custom SQL Profile to be created by this script');
DBMS_OUTPUT.PUT_LINE('REM will affect plans for SQL commands with signature');
DBMS_OUTPUT.PUT_LINE('REM matching the one for SQL Text below.');
DBMS_OUTPUT.PUT_LINE('REM Review SQL Text and adjust accordingly.');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM PARAMETERS');
DBMS_OUTPUT.PUT_LINE('REM None.');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM EXAMPLE');
DBMS_OUTPUT.PUT_LINE('REM SQL> START coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..sql;');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('REM NOTES');
DBMS_OUTPUT.PUT_LINE('REM 1. Should be run as SYSTEM or SYSDBA.');
DBMS_OUTPUT.PUT_LINE('REM 2. User must have CREATE ANY SQL PROFILE privilege.');
DBMS_OUTPUT.PUT_LINE('REM 3. SOURCE and TARGET systems can be the same or similar.');
DBMS_OUTPUT.PUT_LINE('REM 4. To drop this custom SQL Profile after it has been created:');
DBMS_OUTPUT.PUT_LINE('REM EXEC DBMS_SQLTUNE.DROP_SQL_PROFILE(''coe_&&sql_id._&&plan_hash_value.'');');
DBMS_OUTPUT.PUT_LINE('REM 5. Be aware that using DBMS_SQLTUNE requires a license');
DBMS_OUTPUT.PUT_LINE('REM for the Oracle Tuning Pack.');
DBMS_OUTPUT.PUT_LINE('REM 6. If you modified a SQL putting Hints in order to produce a desired');
DBMS_OUTPUT.PUT_LINE('REM Plan, you can remove the artifical Hints from SQL Text pieces below.');
DBMS_OUTPUT.PUT_LINE('REM By doing so you can create a custom SQL Profile for the original');
DBMS_OUTPUT.PUT_LINE('REM SQL but with the Plan captured from the modified SQL (with Hints).');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('WHENEVER SQLERROR EXIT SQL.SQLCODE;');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('VAR signature NUMBER;');
DBMS_OUTPUT.PUT_LINE('VAR signaturef NUMBER;');
DBMS_OUTPUT.PUT_LINE('REM');
DBMS_OUTPUT.PUT_LINE('DECLARE');
DBMS_OUTPUT.PUT_LINE('sql_txt CLOB;');
DBMS_OUTPUT.PUT_LINE('h SYS.SQLPROF_ATTR;');
DBMS_OUTPUT.PUT_LINE('PROCEDURE wa (p_line IN VARCHAR2) IS');
DBMS_OUTPUT.PUT_LINE('BEGIN');
DBMS_OUTPUT.PUT_LINE('DBMS_LOB.WRITEAPPEND(sql_txt, LENGTH(p_line), p_line);');
DBMS_OUTPUT.PUT_LINE('END wa;');
DBMS_OUTPUT.PUT_LINE('BEGIN');
DBMS_OUTPUT.PUT_LINE('DBMS_LOB.CREATETEMPORARY(sql_txt, TRUE);');
DBMS_OUTPUT.PUT_LINE('DBMS_LOB.OPEN(sql_txt, DBMS_LOB.LOB_READWRITE);');
DBMS_OUTPUT.PUT_LINE('-- SQL Text pieces below do not have to be of same length.');
DBMS_OUTPUT.PUT_LINE('-- So if you edit SQL Text (i.e. removing temporary Hints),');
DBMS_OUTPUT.PUT_LINE('-- there is no need to edit or re-align unmodified pieces.');
l_clob_size := NVL(DBMS_LOB.GETLENGTH(:sql_text), 0);
l_offset := 1;
WHILE l_offset < l_clob_size
LOOP
l_pos := DBMS_LOB.INSTR(:sql_text, CHR(00), l_offset);
IF l_pos > 0 THEN
l_len := l_pos - l_offset;
ELSE -- last piece
l_len := l_clob_size - l_pos + 1;
END IF;
l_sql_text := DBMS_LOB.SUBSTR(:sql_text, l_len, l_offset);
/* cannot do such 3 replacement since a line could end with a comment using "--"
l_sql_text := REPLACE(l_sql_text, CHR(10), ' '); -- replace LF with SP
l_sql_text := REPLACE(l_sql_text, CHR(13), ' '); -- replace CR with SP
l_sql_text := REPLACE(l_sql_text, CHR(09), ' '); -- replace TAB with SP
*/
l_offset := l_offset + l_len + 1;
IF l_len > 0 THEN
IF INSTR(l_sql_text, '''[') + INSTR(l_sql_text, ']''') = 0 THEN
l_sql_text := '['||l_sql_text||']';
ELSIF INSTR(l_sql_text, '''{') + INSTR(l_sql_text, '}''') = 0 THEN
l_sql_text := '{'||l_sql_text||'}';
ELSIF INSTR(l_sql_text, '''<') + INSTR(l_sql_text, '>''') = 0 THEN
l_sql_text := '<'||l_sql_text||'>';
ELSIF INSTR(l_sql_text, '''(') + INSTR(l_sql_text, ')''') = 0 THEN
l_sql_text := '('||l_sql_text||')';
ELSIF INSTR(l_sql_text, '''"') + INSTR(l_sql_text, '"''') = 0 THEN
l_sql_text := '"'||l_sql_text||'"';
ELSIF INSTR(l_sql_text, '''|') + INSTR(l_sql_text, '|''') = 0 THEN
l_sql_text := '|'||l_sql_text||'|';
ELSIF INSTR(l_sql_text, '''~') + INSTR(l_sql_text, '~''') = 0 THEN
l_sql_text := '~'||l_sql_text||'~';
ELSIF INSTR(l_sql_text, '''^') + INSTR(l_sql_text, '^''') = 0 THEN
l_sql_text := '^'||l_sql_text||'^';
ELSIF INSTR(l_sql_text, '''@') + INSTR(l_sql_text, '@''') = 0 THEN
l_sql_text := '@'||l_sql_text||'@';
ELSIF INSTR(l_sql_text, '''#') + INSTR(l_sql_text, '#''') = 0 THEN
l_sql_text := '#'||l_sql_text||'#';
ELSIF INSTR(l_sql_text, '''%') + INSTR(l_sql_text, '%''') = 0 THEN
l_sql_text := '%'||l_sql_text||'%';
ELSIF INSTR(l_sql_text, '''$') + INSTR(l_sql_text, '$''') = 0 THEN
l_sql_text := '$'||l_sql_text||'$';
ELSE
l_sql_text := CHR(96)||l_sql_text||CHR(96);
END IF;
DBMS_OUTPUT.PUT_LINE('wa(q'''||l_sql_text||''');');
END IF;
END LOOP;
DBMS_OUTPUT.PUT_LINE('DBMS_LOB.CLOSE(sql_txt);');
DBMS_OUTPUT.PUT_LINE('h := SYS.SQLPROF_ATTR(');
DBMS_OUTPUT.PUT_LINE('q''[BEGIN_OUTLINE_DATA]'',');
FOR i IN (SELECT /*+ opt_param('parallel_execution_enabled', 'false') */
SUBSTR(EXTRACTVALUE(VALUE(d), '/hint'), 1, 4000) hint
FROM TABLE(XMLSEQUENCE(EXTRACT(XMLTYPE(:other_xml), '/*/outline_data/hint'))) d)
LOOP
l_hint := i.hint;
WHILE NVL(LENGTH(l_hint), 0) > 0
LOOP
IF LENGTH(l_hint) <= 500 THEN
DBMS_OUTPUT.PUT_LINE('q''['||l_hint||']'',');
l_hint := NULL;
ELSE
l_pos := INSTR(SUBSTR(l_hint, 1, 500), ' ', -1);
DBMS_OUTPUT.PUT_LINE('q''['||SUBSTR(l_hint, 1, l_pos)||']'',');
l_hint := ' '||SUBSTR(l_hint, l_pos);
END IF;
END LOOP;
END LOOP;
DBMS_OUTPUT.PUT_LINE('q''[END_OUTLINE_DATA]'');');
DBMS_OUTPUT.PUT_LINE(':signature := DBMS_SQLTUNE.SQLTEXT_TO_SIGNATURE(sql_txt);');
DBMS_OUTPUT.PUT_LINE(':signaturef := DBMS_SQLTUNE.SQLTEXT_TO_SIGNATURE(sql_txt, TRUE);');
DBMS_OUTPUT.PUT_LINE('DBMS_SQLTUNE.IMPORT_SQL_PROFILE (');
DBMS_OUTPUT.PUT_LINE('sql_text => sql_txt,');
DBMS_OUTPUT.PUT_LINE('profile => h,');
DBMS_OUTPUT.PUT_LINE('name => ''coe_&&sql_id._&&plan_hash_value.'',');
DBMS_OUTPUT.PUT_LINE('description => ''coe &&sql_id. &&plan_hash_value. ''||:signature||'' ''||:signaturef||'''',');
DBMS_OUTPUT.PUT_LINE('category => ''DEFAULT'',');
DBMS_OUTPUT.PUT_LINE('validate => TRUE,');
DBMS_OUTPUT.PUT_LINE('replace => TRUE,');
DBMS_OUTPUT.PUT_LINE('force_match => FALSE /* TRUE:FORCE (match even when different literals in SQL). FALSE:EXACT (similar to CURSOR_SHARING) */ );');
DBMS_OUTPUT.PUT_LINE('DBMS_LOB.FREETEMPORARY(sql_txt);');
DBMS_OUTPUT.PUT_LINE('END;');
DBMS_OUTPUT.PUT_LINE('/');
DBMS_OUTPUT.PUT_LINE('WHENEVER SQLERROR CONTINUE');
DBMS_OUTPUT.PUT_LINE('SET ECHO OFF;');
DBMS_OUTPUT.PUT_LINE('PRINT signature');
DBMS_OUTPUT.PUT_LINE('PRINT signaturef');
DBMS_OUTPUT.PUT_LINE('PRO');
DBMS_OUTPUT.PUT_LINE('PRO ... manual custom SQL Profile has been created');
DBMS_OUTPUT.PUT_LINE('PRO');
DBMS_OUTPUT.PUT_LINE('SET TERM ON ECHO OFF LIN 80 TRIMS OFF NUMF "";');
DBMS_OUTPUT.PUT_LINE('SPO OFF;');
DBMS_OUTPUT.PUT_LINE('PRO');
DBMS_OUTPUT.PUT_LINE('PRO COE_XFR_SQL_PROFILE_&&sql_id._&&plan_hash_value. completed');
END;
/
SPO OFF;
SET DEF ON TERM ON ECHO OFF FEED 6 VER ON HEA ON LIN 80 PAGES 14 LONG 80 LONGC 80 TRIMS OFF TI OFF TIMI OFF SERVEROUT OFF NUMF "" SQLP SQL>;
SET SERVEROUT OFF;
PRO
PRO Execute coe_xfr_sql_profile_&&sql_id._&&plan_hash_value..sql
PRO on TARGET system in order to create a custom SQL Profile
PRO with plan &&plan_hash_value linked to adjusted sql_text.
PRO
UNDEFINE 1 2 sql_id plan_hash_value
CL COL
PRO
PRO COE_XFR_SQL_PROFILE completed.
bash-3.2$ vi coe_xfr_sql_profile.sql
bash-3.2$ sqlplus / as sysdba
SQL*Plus: Release 11.2.0.4.0 Production on Tue Jan 5 12:49:16 2021
Copyright (c) 1982, 2013, Oracle. All rights reserved.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options
STEP-3: RUN coe_xfr_sql_profile.sql SCRIPT
SQL> @coe_xfr_sql_profile.sql
Parameter 1:
SQL_ID (required)
Enter value for 1: byjakj1g6u7ra
PLAN_HASH_VALUE AVG_ET_SECS
--------------- -----------
3363986154 232.345
930483739 3489.38
Parameter 2:
PLAN_HASH_VALUE (required)
Enter value for 2: 3363986154
Values passed to coe_xfr_sql_profile:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
SQL_ID : "byjakj1g6u7ra"
PLAN_HASH_VALUE: "3363986154"
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_byjakj1g6u7ra_3363986154.sql
on TARGET system in order to create a custom SQL Profile
with plan 3363986154 linked to adjusted sql_text.
COE_XFR_SQL_PROFILE completed.
SQL>ho
bash-3.2$
bash-3.2$ exit
exit
STEP-4: EXECUTE THE SCRIPT CREATED
SQL>@coe_xfr_sql_profile_byjakj1g6u7ra_3363986154.sql
SQL>REM
SQL>REM $Header: 215187.1 coe_xfr_sql_profile_byjakj1g6u7ra_3363986154.sql 11.4.4.4 2021/01/05 carlos.sierra $
SQL>REM
SQL>REM Copyright (c) 2000-2012, Oracle Corporation. All rights reserved.
SQL>REM
SQL>REM AUTHOR
SQL>REM carlos.sierra@oracle.com
SQL>REM
PL/SQL procedure successfully completed.
SQL>WHENEVER SQLERROR CONTINUE
SQL>SET ECHO OFF;
SIGNATURE
---------------------
18310185952535799624
SIGNATUREF
---------------------
18310185952535799624
... manual custom SQL Profile has been created
COE_XFR_SQL_PROFILE_byjakj1g6u7ra_3363986154 completed
SQL>
Step 5: Verify if it is using SQL_PROFILE
-- Run the problematic SQL and below command parallel
select SQL_ID, CHILD_NUMBER, PLAN_HASH_VALUE, SQL_PROFILE FROM V$SQL where sql_id='&SQL_ID';
select * from table(dbms_xplan.display_cursor('dkz7v96ym42c6',null,'ADVANCED ALLSTATS LAST'));
Please verify if it is using new PLAN_HASH_VALUE.
Please note if new plan is not using, then flush the HASH VALUE to ensure the new plan is used, then have the apps team restart the process.
COLUMN category FORMAT a10
COLUMN sql_text FORMAT a20
SELECT NAME, SQL_TEXT, CATEGORY, STATUS
FROM DBA_SQL_PROFILES;
Dropping a SQL Profile
Connect SQL*Plus to the database with the appropriate privileges, call the DBMS_SQLTUNE.DROP_SQL_PROFILE procedure.
The following example drops the profile named my_sql_profile:
BEGIN
DBMS_SQLTUNE.DROP_SQL_PROFILE (
name => 'my_sql_profile'
);
END;
/
Basic tasks of a SQL Profile:
Hope it worked for you !! 🙂
