db tech showcase Tokyo 2013 - A35 特濃JPOUG：潮溜まりでジャブジャブ、SQLチューニング
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db tech showcase Tokyo 2013 - A35 特濃JPOUG：潮溜まりでジャブジャブ、SQLチューニング
- 1. 潮溜まりでジャブジャブ、 SQLチューニング Rock Pool / Michael Hiroshi Sekiguchi ( @discus_hamburg ) 13年11月16日土曜日
- 2. 自己紹介 @discus_hamburg 関口 裕士 （屋号 Stargrass Software） 最近の仕事 : Software Engineer < DB Engineer 最近は医者のような問診に興味を持っている JPOUG ボードメンバー Oracle ACE (2012) Blog : Mac De Oracle / http://discus-hamburg.cocolog-nifty.com 13年11月16日土曜日
- 3. 皆が、Deep dive、Deep diveというの で、Oracle Coreの深い海ではなく沢⼭山 のSQL⽂文が泳ぐ浅瀬へShallow Diveす ることに決めた天の邪⻤⿁鬼。 13年11月16日土曜日
- 14. 釣り上げたSQL文 SELECT /*+ USE_NL(tab1 tab2 tab3 tab4) */ tab4.* FROM tab1 INNER JOIN tab2 ON tab1.unique# = tab2.unique# AND tab1.unique# IN (1,2) INNER JOIN tab3 ON tab2.unique# = tab3.unique# AND tab2.branch# = tab3.branch# INNER JOIN tab4 ON tab3.unique# = tab4.unique# AND tab3.branch# = tab4.branch# AND tab3.loc# = tab4.loc# ; 13年11月16日土曜日
- 15. 釣り上げたSQL文 (実行計画) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 3 | NESTED LOOPS | | 200 | 15600 | 3 (0)| 00:00:01 | | | | 4 | NESTED LOOPS | | 200 | 13000 | 3 (0)| 00:00:01 | | | | 5 | REMOTE | TAB3 | 200 | 7800 | 3 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 6 | REMOTE | TAB2 | 1 | 26 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 7 | REMOTE | TAB1 | 1 | 13 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | |* 8 | INDEX RANGE SCAN | PK_TAB4 | 1 | | 2 (0)| 00:00:01 | | | | 9 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 3 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 8 -‐ access("TAB3"."UNIQUE#"="TAB4"."UNIQUE#" AND "TAB3"."BRANCH#"="TAB4"."BRANCH#" AND "TAB3"."LOC#"="TAB4"."LOC#") filter("TAB4"."UNIQUE#"=1 OR "TAB4"."UNIQUE#"=2) 13年11月16日土曜日
- 16. 釣り上げたSQL文 (実行計画) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 3 | NESTED LOOPS | | 200 | 15600 | 3 (0)| 00:00:01 | | | | 4 | NESTED LOOPS | | 200 | 13000 | 3 (0)| 00:00:01 | | | | 5 | REMOTE | TAB3 | 200 | 7800 | 3 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 6 | REMOTE | TAB2 | 1 | 26 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 7 | REMOTE | TAB1 | 1 | 13 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | |* 8 | INDEX RANGE SCAN | PK_TAB4 | 1 | | 2 (0)| 00:00:01 | | | | 9 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 3 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 8 -‐ access("TAB3"."UNIQUE#"="TAB4"."UNIQUE#" AND "TAB3"."BRANCH#"="TAB4"."BRANCH#" AND "TAB3"."LOC#"="TAB4"."LOC#") filter("TAB4"."UNIQUE#"=1 OR "TAB4"."UNIQUE#"=2) 13年11月16日土曜日
- 17. 釣り上げたSQL文 (DB Link..) ●USER_DB_LINKSより DB_LINK USERNAME HOST -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ PDBORCL_R SCOTT PDBORCL_R ●USER_SYNONYMSより SYNONYM_NAME TABLE_NAME DB_LINK -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ TAB1 TAB1 PDBORCL_R TAB2 TAB2 PDBORCL_R TAB3 TAB3 PDBORCL_R 13年11月16日土曜日
- 18. 釣り上げたSQL文 (DB Link..) ●USER_DB_LINKSより DB_LINK USERNAME HOST -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ PDBORCL_R SCOTT PDBORCL_R DB Link先は１つで ３表が同一リモートデ ータベースに存在する ●USER_SYNONYMSより SYNONYM_NAME TABLE_NAME DB_LINK -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ TAB1 TAB1 PDBORCL_R TAB2 TAB2 PDBORCL_R TAB3 TAB3 PDBORCL_R 13年11月16日土曜日
- 21. 釣り上げたSQL文 (実行計画) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 3 | NESTED LOOPS | | 200 | 15600 | 3 (0)| 00:00:01 | | | | 4 | NESTED LOOPS | | 200 | 13000 | 3 (0)| 00:00:01 | | | | 5 | REMOTE | TAB3 | 200 | 7800 | 3 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 6 | REMOTE | TAB2 | 1 | 26 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 7 | REMOTE | TAB1 | 1 | 13 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | |* 8 | INDEX RANGE SCAN | PK_TAB4 | 1 | | 2 (0)| 00:00:01 | | | | 9 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 3 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 8 -‐ access("TAB3"."UNIQUE#"="TAB4"."UNIQUE#" AND "TAB3"."BRANCH#"="TAB4"."BRANCH#" AND "TAB3"."LOC#"="TAB4"."LOC#") filter("TAB4"."UNIQUE#"=1 OR "TAB4"."UNIQUE#"=2) 13年11月16日土曜日
- 22. 釣り上げたSQL文 (実行計画) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 3 | NESTED LOOPS | | 200 | 15600 | 3 (0)| 00:00:01 | | | | 4 | NESTED LOOPS | | 200 | 13000 | 3 (0)| 00:00:01 | | | | 5 | REMOTE | TAB3 | 200 | 7800 | 3 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 6 | REMOTE | TAB2 | 1 | 26 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 7 | REMOTE | TAB1 | 1 | 13 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | |* 8 | INDEX RANGE SCAN | PK_TAB4 | 1 | | 2 (0)| 00:00:01 | | | | 9 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 3 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ この実行計画はローカルデー 8 -‐ access("TAB3"."UNIQUE#"="TAB4"."UNIQUE#" AND "TAB3"."BRANCH#"="TAB4"."BRANCH#" AND "TAB3"."LOC#"="TAB4"."LOC#") filter("TAB4"."UNIQUE#"=1 OR "TAB4"."UNIQUE#"=2) タベースで取得されたもの 13年11月16日土曜日
- 23. リモートクエリーの実行計画 Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 5 -‐ SELECT /*+ USE_NL ("TAB3") */ "UNIQUE#","BRANCH#" ,"LOC#" FROM "TAB3" "TAB3" WHERE "UNIQUE#"=1 OR "UNIQUE#"=2 (accessing 'PDBORCL_R' ) 6 -‐ SELECT /*+ USE_NL ("TAB2") */ "UNIQUE#","BRANCH#" FROM "TAB2" "TAB2" WHERE "BRANCH#"=:1 AND "UNIQUE#"=:2 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) 7 -‐ SELECT /*+ USE_NL ("TAB1") */ "UNIQUE#" FROM "TAB1" "TAB1" WHERE "UNIQUE#"=:1 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) explain plan文などでオプティマイザーが 切り出したリモートクエリーを確認 13年11月16日土曜日
- 24. リモートクエリーの実行計画 Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 5 -‐ SELECT /*+ USE_NL ("TAB3") */ "UNIQUE#","BRANCH#" ,"LOC#" FROM "TAB3" "TAB3" WHERE "UNIQUE#"=1 OR "UNIQUE#"=2 (accessing 'PDBORCL_R' ) 6 -‐ SELECT /*+ USE_NL ("TAB2") */ "UNIQUE#","BRANCH#" FROM "TAB2" "TAB2" WHERE "BRANCH#"=:1 AND "UNIQUE#"=:2 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) 7 -‐ SELECT /*+ USE_NL ("TAB1") */ "UNIQUE#" FROM "TAB1" "TAB1" WHERE "UNIQUE#"=:1 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) これらのSQL文はリモートデータベースで実 行されるため、実行計画はリモートデータベ ース上で確認する必要がある。 13年11月16日土曜日
- 25. リモートクエリーの 実行計画① Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 5 -‐ SELECT /*+ USE_NL ("TAB3") */ "UNIQUE#","BRANCH#" ,"LOC#" FROM "TAB3" "TAB3" WHERE "UNIQUE#"=1 OR "UNIQUE#"=2 (accessing 'PDBORCL_R' ) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 200 | 2000 | 3 (0)| 00:00:01 | | 1 | INLIST ITERATOR | | | | | | |* 2 | INDEX RANGE SCAN| PK_TAB3 | 200 | 2000 | 3 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 13年11月16日土曜日
- 26. リモートクエリーの 実行計画① Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 5 -‐ SELECT /*+ USE_NL ("TAB3") */ "UNIQUE#","BRANCH#" ,"LOC#" FROM "TAB3" "TAB3" WHERE "UNIQUE#"=1 OR "UNIQUE#"=2 (accessing 'PDBORCL_R' ) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 200 | 2000 | 3 (0)| 00:00:01 | | 1 | INLIST ITERATOR | | | | | | |* 2 | INDEX RANGE SCAN| PK_TAB3 | 200 | 2000 | 3 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ チューニングが必要だとは 思えない... 13年11月16日土曜日
- 27. リモートクエリーの 実行計画② Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 6 -‐ SELECT /*+ USE_NL ("TAB2") */ "UNIQUE#","BRANCH#" FROM "TAB2" "TAB2" WHERE "BRANCH#"=:1 AND "UNIQUE#"=:2 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 7 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB2 | 1 | 7 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 13年11月16日土曜日
- 28. リモートクエリーの 実行計画② Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 6 -‐ SELECT /*+ USE_NL ("TAB2") */ "UNIQUE#","BRANCH#" FROM "TAB2" "TAB2" WHERE "BRANCH#"=:1 AND "UNIQUE#"=:2 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 7 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB2 | 1 | 7 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ チューニングが必要だとは 思えない... 13年11月16日土曜日
- 29. リモートクエリーの 実行計画③ Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 7 -‐ SELECT /*+ USE_NL ("TAB1") */ "UNIQUE#" FROM "TAB1" "TAB1" WHERE "UNIQUE#"=:1 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 4 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB1 | 1 | 4 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 13年11月16日土曜日
- 30. リモートクエリーの 実行計画③ Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 7 -‐ SELECT /*+ USE_NL ("TAB1") */ "UNIQUE#" FROM "TAB1" "TAB1" WHERE "UNIQUE#"=:1 AND ("UNIQUE#"=1 OR "UNIQUE#"=2) (accessing 'PDBORCL_R' ) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 4 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB1 | 1 | 4 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ チューニングが必要だとは 思えない... 13年11月16日土曜日
- 31. リモートクエリーの分析結果 -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 200 | 2000 | 3 (0)| 00:00:01 | | 1 | INLIST ITERATOR | | | | | | |* 2 | INDEX RANGE SCAN| PK_TAB3 | 200 | 2000 | 3 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 7 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB2 | 1 | 7 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 4 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB1 | 1 | 4 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 13年11月16日土曜日
- 32. リモートクエリーの分析結果 -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 200 | 2000 | 3 (0)| 00:00:01 | | 1 | INLIST ITERATOR | | | | | | |* 2 | INDEX RANGE SCAN| PK_TAB3 | 200 | 2000 | 3 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 1 | 7 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | |* 2 | INDEX UNIQUE SCAN| PK_TAB2 | 1 | 7 | 1 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ３本のリモートクエリは個別は、個別に発行 -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ されており、実行計画は単純であり、SQL文 | 0 | SELECT STATEMENT | | 1 | 4 | 1 (0)| 00:00:01 | |* 1 | FILTER | | | | | | 単体ではチューニングが必要という状態には |* 2 | INDEX UNIQUE SCAN| PK_TAB1 | 1 | 4 | 1 (0)| 00:00:01 | ない.... -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ ほかにチューニング可能な箇所はないか....... 13年11月16日土曜日
- 33. 改善できそうな箇所 -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 3 | NESTED LOOPS | | 200 | 15600 | 3 (0)| 00:00:01 | | | | 4 | NESTED LOOPS | | 200 | 13000 | 3 (0)| 00:00:01 | | | | 5 | REMOTE | TAB3 | 200 | 7800 | 3 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 6 | REMOTE | TAB2 | 1 | 26 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 7 | REMOTE | TAB1 | 1 | 13 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | |* 8 | INDEX RANGE SCAN | PK_TAB4 | 1 | | 2 (0)| 00:00:01 | | | | 9 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 3 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 8 -‐ access("TAB3"."UNIQUE#"="TAB4"."UNIQUE#" AND "TAB3"."BRANCH#"="TAB4"."BRANCH#" AND "TAB3"."LOC#"="TAB4"."LOC#") filter("TAB4"."UNIQUE#"=1 OR "TAB4"."UNIQUE#"=2) 13年11月16日土曜日
- 34. 改善できそうな箇所 -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 11M| 603 (0)| 00:00:01 | | | | 3 | NESTED LOOPS | | 200 | 15600 | 3 (0)| 00:00:01 | | | | 4 | NESTED LOOPS | | 200 | 13000 | 3 (0)| 00:00:01 | | | | 5 | REMOTE | TAB3 | 200 | 7800 | 3 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 6 | REMOTE | TAB2 | 1 | 26 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | | 7 | REMOTE | TAB1 | 1 | 13 | 0 (0)| 00:00:01 | PDBOR~ | R-‐>S | |* 8 | INDEX RANGE SCAN | PK_TAB4 | 1 | | 2 (0)| 00:00:01 | | | | 9 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 3 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ ３つのリモートクエリーをDB Linkを介して ネットワーク越しにNested Loop結合を行っ 8 -‐ access("TAB3"."UNIQUE#"="TAB4"."UNIQUE#" AND "TAB3"."BRANCH#"="TAB4"."BRANCH#" AND ている。 "TAB3"."LOC#"="TAB4"."LOC#") filter("TAB4"."UNIQUE#"=1 OR "TAB4"."UNIQUE#"=2) この部分をすべてリモートデータベース内で 完結させれば、多少の効率改善になるのでは ないか.... 13年11月16日土曜日
- 35. 治療方針 ３つのリモートクエリーを インラインビューにまとめ ることで、１つのリモート クエリーとして効率化を狙 う SELECT /*+ USE_NL(t01 tab4) */ tab4.* FROM ( SELECT /*+ NO_MERGE */ tab3.unique# ,tab3.branch# ,tab3.loc# FROM tab1 INNER JOIN tab2 ON tab1.unique# = tab2.unique# AND tab1.unique# IN (1,2) INNER JOIN tab3 ON tab2.unique# = tab3.unique# AND tab2.branch# = tab3.branch# ) t01 INNER JOIN tab4 ON t01.unique# = tab4.unique# AND t01.branch# = tab4.branch# AND t01.loc# = tab4.loc# ; 13年11月16日土曜日
- 37. 治療後の実行計画(ローカル) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | Inst |IN-‐OUT| -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20000 | 10M| 2004 (1)| 00:00:01 | | | | 1 | NESTED LOOPS | | | | | | | | | 2 | NESTED LOOPS | | 20000 | 10M| 2004 (1)| 00:00:01 | | | | 3 | VIEW | | 200 | 7800 | 3 (0)| 00:00:01 | | | | 4 | REMOTE | | | | | | PDBOR~ | R-‐>S | |* 5 | INDEX RANGE SCAN | PK_TAB4 | 100 | | 2 (0)| 00:00:01 | | | | 6 | TABLE ACCESS BY INDEX ROWID| TAB4 | 100 | 51400 | 10 (0)| 00:00:01 | | | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 5 -‐ access("T01"."UNIQUE#"="TAB4"."UNIQUE#" AND "T01"."BRANCH#"="TAB4"."BRANCH#" AND "T01"."LOC#"="TAB4"."LOC#") Remote SQL Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 4 -‐ EXPLAIN PLAN SET STATEMENT_ID='PLUS8440309' INTO PLAN_TABLE@! FOR SELECT /*+ NO_MERGE */ "A1"."UNIQUE#","A1"."BRANCH#","A1"."LOC#" FROM "TAB1" "A3","TAB2" "A2","TAB3" "A1" WHERE "A2"."UNIQUE#"="A1"."UNIQUE#" AND "A2"."BRANCH#"="A1"."BRANCH#" AND "A3"."UNIQUE#"="A2"."UNIQUE#" AND ("A3"."UNIQUE#"=1 OR "A3"."UNIQUE#"=2) AND ("A2"."UNIQUE#"=1 OR "A2"."UNIQUE#"=2) AND ("A1"."UNIQUE#"=1 OR "A1"."UNIQUE#"=2) (accessing 'PDBORCL_R' ) 13年11月16日土曜日
- 38. 治療後の実行計画(リモート) -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ | 0 | SELECT STATEMENT | | 20 | 420 | 3 (0)| 00:00:01 | | 1 | NESTED LOOPS | | 20 | 420 | 3 (0)| 00:00:01 | | 2 | NESTED LOOPS | | 20 | 340 | 3 (0)| 00:00:01 | | 3 | INLIST ITERATOR | | | | | | |* 4 | INDEX RANGE SCAN| PK_TAB3 | 200 | 2000 | 3 (0)| 00:00:01 | |* 5 | INDEX UNIQUE SCAN| PK_TAB2 | 1 | 7 | 0 (0)| 00:00:01 | |* 6 | INDEX UNIQUE SCAN | PK_TAB1 | 1 | 4 | 0 (0)| 00:00:01 | -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ Predicate Information (identified by operation id): -‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐-‐ 4 -‐ access("A1"."UNIQUE#"=1 OR "A1"."UNIQUE#"=2) 5 -‐ access("A2"."UNIQUE#"="A1"."UNIQUE#" AND "A2"."BRANCH#"="A1"."BRANCH#") filter("A2"."UNIQUE#"=1 OR "A2"."UNIQUE#"=2) 6 -‐ access("A3"."UNIQUE#"="A2"."UNIQUE#") filter("A3"."UNIQUE#"=1 OR "A3"."UNIQUE#"=2) 13年11月16日土曜日
- 42. Oracle® Database管理者ガイド 12c リリース1 (12.1) 分散問合せのチューニング http://docs.oracle.com/cd/E49329_01/server. 121/b71301/ds_appdev.htm#i1007640 13年11月16日土曜日
- 46. 精密検査（コード） DECLARE CURSOR cs_foobar IS SELECT rowid FROM foobar WHERE unique# BETWEEN 1 AND 400000 ORDER BY unique# FOR UPDATE; BEGIN FOR row IN cs_foobar LOOP UPDATE foobar SET foobar_str = LPAD('y',500,'y') WHERE rowid = row.rowid; END LOOP; COMMIT; END; / 13年11月16日土曜日
- 47. 精密検査（コード） DECLARE CURSOR cs_foobar IS SELECT rowid FROM foobar WHERE unique# BETWEEN 1 AND 400000 ORDER BY unique# FOR UPDATE; BEGIN FOR row IN cs_foobar LOOP UPDATE foobar SET foobar_str = LPAD('y',500,'y') WHERE rowid = row.rowid; END LOOP; COMMIT; END; / 13年11月16日土曜日
- 48. 精密検査（統計情報） USER_INDEXESより TABLE_NAME INDEX_NAME NUM_ROWS DISTINCT_KEYS CLUSTERING_FACTOR -------------- --------------- ---------- ------------- ----------------FOOBAR SYS_C0010235 2070913 2070913 2070899 USER_IND_COLUMNSより NDEX_NAME COLUMN_NAME ---------------- -------------SYS_C0010235 UNIQUE# USER_TABLESより TABLE_NAME NUM_ROWS AVG_ROW_LEN ------------ ---------- ----------FOOBAR 2000000 506 13年11月16日土曜日