2026-03-12 20:23:15
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45
tpt/tools/optimizer/descxx_install.sql
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45
tpt/tools/optimizer/descxx_install.sql
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-- descxx.sql requires the display_raw function which is included in the comment section below.
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-- the display_raw function is taken from Greg Rahn's blog as I'm too lazy to write one myself
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-- http://structureddata.org/2007/10/16/how-to-display-high_valuelow_value-columns-from-user_tab_col_statistics/
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--
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PROMPT Install DISPLAY_RAW helper function into the current schema?
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PAUSE Press ENTER to install, CTRL+C to cancel...
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create or replace function display_raw (rawval raw, type varchar2)
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return varchar2
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is
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cn number;
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cv varchar2(128);
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cd date;
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cnv nvarchar2(128);
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cr rowid;
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cc char(128);
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begin
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if (type = 'NUMBER') then
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dbms_stats.convert_raw_value(rawval, cn);
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return to_char(cn);
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elsif (type = 'VARCHAR2') then
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dbms_stats.convert_raw_value(rawval, cv);
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return to_char(cv);
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elsif (type = 'DATE') then
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dbms_stats.convert_raw_value(rawval, cd);
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return to_char(cd);
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elsif (type = 'NVARCHAR2') then
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dbms_stats.convert_raw_value(rawval, cnv);
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return to_char(cnv);
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elsif (type = 'ROWID') then
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dbms_stats.convert_raw_value(rawval, cr);
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return to_char(cnv);
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elsif (type = 'CHAR') then
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dbms_stats.convert_raw_value(rawval, cc);
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return to_char(cc);
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else
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return 'UNKNOWN DATATYPE';
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end if;
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end;
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/
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grant execute on display_raw to public;
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create public synonym display_raw for display_raw;
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37
tpt/tools/optimizer/optimizer_features_matrix.sql
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tpt/tools/optimizer/optimizer_features_matrix.sql
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-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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PROMPT display a matrix of optimizer parameters which change when changing optimizer_features_enabled...
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CREATE TABLE opt_param_matrix(
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opt_features_enabled VARCHAR2(20) NOT NULL
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, parameter VARCHAR2(75) NOT NULL
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, value VARCHAR2(1000)
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)
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/
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CREATE TABLE opt_fix_matrix (
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opt_features_enabled VARCHAR2(20) NOT NULL
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, bugno NUMBER
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, value NUMBER
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, sql_feature VARCHAR2(100)
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, description VARCHAR2(100)
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, optimizer_feature_enable VARCHAR2(25)
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, event NUMBER
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, is_default NUMBER
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)
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/
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BEGIN
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FOR i IN (select value from v$parameter_valid_values where name = 'optimizer_features_enable' order by ordinal) LOOP
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EXECUTE IMMEDIATE 'alter session set optimizer_features_enable='''||i.value||'''';
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EXECUTE IMMEDIATE 'insert into opt_param_matrix select :opt_features_enable, n.ksppinm, c.ksppstvl from sys.x$ksppi n, sys.x$ksppcv c where n.indx=c.indx' using i.value;
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EXECUTE IMMEDIATE 'insert into opt_fix_matrix select :opt_features_enable, bugno, value, sql_feature, description, optimizer_feature_enable, event, is_default FROM v$session_fix_control WHERE session_id=USERENV(''sid'')' using i.value;
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END LOOP;
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END;
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/
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COMMIT;
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PROMPT To test, run: @cofep.sql 10.2.0.1 10.2.0.4
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25
tpt/tools/optimizer/sqlflame_stacks.txt
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25
tpt/tools/optimizer/sqlflame_stacks.txt
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0 - SELECT STATEMENT;1 - SORT ORDER BY 1
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY 45
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER 20
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS 19
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS 66
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN 635
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;7 - TABLE ACCESS FULL [TPCDS.DATE_DIM] 3
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN 935
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;9 - TABLE ACCESS FULL [TPCDS.HOUSEHOLD_DEMOGRAPHICS] 4
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN 146490
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN 11104
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;12 - TABLE ACCESS FULL [TPCDS.WAREHOUSE] 5
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;13 - HASH JOIN 20788
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;13 - HASH JOIN;14 - HASH JOIN 3
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;13 - HASH JOIN;14 - HASH JOIN;15 - TABLE ACCESS FULL [TPCDS.DATE_DIM] 3
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;13 - HASH JOIN;14 - HASH JOIN;16 - TABLE ACCESS FULL [TPCDS.DATE_DIM] 3
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;13 - HASH JOIN;17 - PARTITION RANGE ALL 113
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;11 - HASH JOIN;13 - HASH JOIN;17 - PARTITION RANGE ALL;18 - TABLE ACCESS FULL [TPCDS.INVENTORY] 5683
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;19 - PARTITION RANGE ALL 4635
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;6 - HASH JOIN;8 - HASH JOIN;10 - HASH JOIN;19 - PARTITION RANGE ALL;20 - TABLE ACCESS FULL [TPCDS.CATALOG_SALES] 13397
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;21 - TABLE ACCESS BY INDEX ROWID [TPCDS.CUSTOMER_DEMOGRAPHICS] 2552
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;5 - NESTED LOOPS;21 - TABLE ACCESS BY INDEX ROWID [TPCDS.CUSTOMER_DEMOGRAPHICS];22 - INDEX UNIQUE SCAN [TPCDS.CD_DEMO_PK_IDX] 475
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;23 - TABLE ACCESS BY INDEX ROWID [TPCDS.ITEM] 50
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;4 - NESTED LOOPS;23 - TABLE ACCESS BY INDEX ROWID [TPCDS.ITEM];24 - INDEX UNIQUE SCAN [TPCDS.ITEM_PK_IDX] 167
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0 - SELECT STATEMENT;1 - SORT ORDER BY;2 - HASH GROUP BY;3 - NESTED LOOPS OUTER;25 - INDEX UNIQUE SCAN [TPCDS.PROMOTION_PK_IDX] 32
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