DB Tech Showcase 2016 - E35 - SQLチューニング総合診療所的予防医学

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17. | Operation | Name | Mem | Temp | ================================================= | SELECT STATEMENT | | | | | HASH JOIN | | 4M | 1G | | PARTITION RANGE SINGLE | | | | | TABLE ACCESS FULL | FOO | | | | TABLE ACCESS FULL | BAR | | | 12

18. | Operation | Name | Mem | Temp | ================================================= | SELECT STATEMENT | | | | | HASH JOIN | | 4M | 1G | | PARTITION RANGE SINGLE | | | | | TABLE ACCESS FULL | FOO | | | | TABLE ACCESS FULL | BAR | | | 12

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21. | Operation | Name | Mem | ========================================== | SELECT STATEMENT | | | | HASH JOIN | | 250M| | PARTITION RANGE SINGLE | | | | TABLE ACCESS FULL | FOO | | | TABLE ACCESS FULL | BAR | | 13

22. | Operation | Name | Mem | ========================================== | SELECT STATEMENT | | | | HASH JOIN | | 250M| | PARTITION RANGE SINGLE | | | | TABLE ACCESS FULL | FOO | | | TABLE ACCESS FULL | BAR | | 13

23. ----------------------------------------------------------------------------- | Id | Operation | Name | E-Rows | A-Rows | A-Time | Reads | ----------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | | 0 |00:00:01.05 | 20052 | | 1 | SORT ORDER BY | | 20 | 0 |00:00:01.05 | 20052 | |* 2 | TABLE ACCESS FULL| FOOBAR | 20 | 0 |00:00:01.05 | 20052 | ----------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------- | Id | Operation | Name | E-Rows | A-Rows | A-Time | Reads | Writes | Used-Mem | Used-Tmp| ----------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | | 20000 |00:00:04.21 | 37325 | 17273 | | | | 1 | SORT ORDER BY | | 20000 | 20000 |00:00:04.21 | 37325 | 17273 | 71M (1)| 135K| |* 2 | TABLE ACCESS FULL| FOOBAR | 20000 | 20000 |00:00:01.25 | 20052 | 0 | | | ----------------------------------------------------------------------------------------------------------- 14

29. ========================================================================================================= | 0 | SELECT STATEMENT | | | 1 | | | | | 1 | HASH JOIN | | | 1 | | | | | 2 | TABLE ACCESS FULL | FOOBAR | 1 | 1 | 0 | 100.00 | direct path read (1) | | 3 | TABLE ACCESS FULL | HOGEHOGE | | | | | | ========================================================================================================= 15

32. =============================================================================================================== | 0 | SELECT STATEMENT | | 2 | 1 | 0 | | | | 1 | HASH JOIN | | 3 | 1 | 0 | 100.00 | direct path write temp (3) | | 2 | TABLE ACCESS FULL | FOOBAR | 2 | 1 | 20000 | | | | 3 | TABLE ACCESS FULL | HOGEHOGE | | 1 | | | | =============================================================================================================== ========================================================================================================= | 0 | SELECT STATEMENT | | | 1 | | | | | 1 | HASH JOIN | | | 1 | | | | | 2 | TABLE ACCESS FULL | FOOBAR | 1 | 1 | 0 | 100.00 | direct path read (1) | | 3 | TABLE ACCESS FULL | HOGEHOGE | | | | | | ========================================================================================================= 15

35. ============================================================================================================== | Id | Operation | Name | Time | Execs | Rows | Activity | Activity Detail | | | | | Active(s) | | (Actual) | (%) | (# samples) | ============================================================================================================== | 0 | SELECT STATEMENT | | 229 | 1 | 400K | 25.00 | Cpu (2) | | 1 | HASH JOIN | | 229 | 1 | 400K | 50.00 | Cpu (3) | | | | | | | | | direct path read temp (1) | | 2 | TABLE ACCESS FULL | FOOBAR | 3 | 1 | 20000 | | | | 3 | TABLE ACCESS FULL | HOGEHOGE | 107 | 1 | 20000 | 12.50 | Cpu (1) | ============================================================================================================== =============================================================================================================== | 0 | SELECT STATEMENT | | 2 | 1 | 0 | | | | 1 | HASH JOIN | | 3 | 1 | 0 | 100.00 | direct path write temp (3) | | 2 | TABLE ACCESS FULL | FOOBAR | 2 | 1 | 20000 | | | | 3 | TABLE ACCESS FULL | HOGEHOGE | | 1 | | | | =============================================================================================================== ========================================================================================================= | 0 | SELECT STATEMENT | | | 1 | | | | | 1 | HASH JOIN | | | 1 | | | | | 2 | TABLE ACCESS FULL | FOOBAR | 1 | 1 | 0 | 100.00 | direct path read (1) | | 3 | TABLE ACCESS FULL | HOGEHOGE | | | | | | ========================================================================================================= 15

38. ID COUNT(1) ---------- ---------- 1 2000 25 20 22 20 34 20 30 20 940 20 912 20 930 20 885 20 906 20 925 20 ID COUNT(1) ---------- ---------- 1 20000 25 20 22 20 34 20 30 20 940 20 912 20 930 20 885 20 906 20 925 20 ID COUNT(1) ---------- ---------- 1 2 25 20 22 20 34 20 30 20 940 20 912 20 930 20 885 20 906 20 925 20 ID COUNT(1) ---------- ---------- 1 2 25 20 22 20 34 20 30 20 940 20 912 20 930 20 885 20 906 20 925 20 16

42. =================================================================================================================== | Id | Operation | Name | Rows | Time | Rows | Mem | Activity | Activity Detail | | | | | (Estim) | Active(s) | (Actual) | (Max) | (%) | (# samples) | =================================================================================================================== | 0 | SELECT STATEMENT | | | 225 | 400K | | 75.00 | Cpu (3) | | 1 | HASH JOIN | | 401K | 225 | 400K | 17M | | | | 2 | TABLE ACCESS FULL | FOOBAR | 2000 | 1 | 2000 | | | | | 3 | TABLE ACCESS FULL | HOGEHOGE | 20291 | 225 | 20000 | | 25.00 | direct path read (1) | =================================================================================================================== =================================================================================================================== | 0 | SELECT STATEMENT | | | 1 | 4 | | | | | 1 | HASH JOIN | | 23 | 1 | 4 | 458K | | | | 2 | TABLE ACCESS FULL | FOOBAR | 20 | 1 | 2 | | | | | 3 | TABLE ACCESS FULL | HOGEHOGE | 313 | 1 | 2 | | 100.00 | direct path read (1) | =================================================================================================================== 17

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46. ID COL1 COL2 ---------- ------------------------------ -------------- 2 ****************************** ************** 4 ****************************** ************** 5 ****************************** ************** 3 ****************************** ************** 1 ****************************** ************** 8 ****************************** ************** 9 ****************************** ************** 10 ****************************** ************** 11 ****************************** ************** 12 ****************************** **************     18

47. ID COL1 COL2 ---------- ------------------------------ -------------- 2 ****************************** ************** 4 ****************************** ************** 5 ****************************** ************** 3 ****************************** ************** 1 ****************************** ************** 8 ****************************** ************** 9 ****************************** ************** 10 ****************************** ************** 11 ****************************** ************** 12 ****************************** **************     18

48. ID COL1 COL2 ---------- ------------------------------ -------------- 2 ****************************** ************** 4 ****************************** ************** 5 ****************************** ************** 3 ****************************** ************** 1 ****************************** ************** 8 ****************************** ************** 9 ****************************** ************** 10 ****************************** ************** 11 ****************************** ************** 12 ****************************** **************     18

49.   SEGMENT_NAME SUM(BLOCKS) MB ------------- ----------- ---------- SEGMENTSIZE 1024 8 TABLE_NAME COLUMN_NAME NUM_NULLS NUM_DISTINCT DENSITY AVG_COL_LEN NUM_BUCKETS HISTOGRAM ------------- ------------ --------- ------------ ---------- ----------- ----------- ---------- SEGMENTSIZE ID 0 1000 .001 4 1 NONE SEGMENTSIZE DATA1 0 1 1 4001 1 NONE SEGMENTSIZE DATA2 0 1 1 3001 1 NONE 19

52.   SEGMENT_NAME SUM(BLOCKS) MB ------------- ----------- ---------- SEGMENTSIZE 1024 8 TABLE_NAME COLUMN_NAME NUM_NULLS NUM_DISTINCT DENSITY AVG_COL_LEN NUM_BUCKETS HISTOGRAM ------------- ------------ --------- ------------ ---------- ----------- ----------- ---------- SEGMENTSIZE ID 0 1000 .001 4 1 NONE SEGMENTSIZE DATA1 0 1 1 4001 1 NONE SEGMENTSIZE DATA2 0 1 1 3001 1 NONE SEGMENT_NAME SUM(BLOCKS) MB ----------------- ----------- ---------- SMALL_SEGMENTSIZE 8 .0625 TABLE_NAME COLUMN_NAME NUM_NULLS NUM_DISTINCT DENSITY AVG_COL_LEN NUM_BUCKETS HISTOGRAM ----------------- ------------ --------- ------------ ---------- ----------- ----------- ---------- SMALL_SEGMENTSIZE ID 0 1000 .001 4 1 NONE SMALL_SEGMENTSIZE DATA1 0 1 1 3 1 NONE SMALL_SEGMENTSIZE DATA2 0 1 1 6 1 NONE 19

58.   ============================================================================== | Id | Operation | Name | Rows | Rows | Read | Read | | | | | (Estim) | (Actual) | Reqs | Bytes | ============================================================================== | 0 | SELECT STATEMENT | | | 1000 | | | | 1 | TABLE ACCESS FULL | SEGMENTSIZE | 1000 | 1000 | 37 | 8MB | ============================================================================== ==================================================================================== | Id | Operation | Name | Rows | Rows | Read | Read | | | | | (Estim) | (Actual) | Reqs | Bytes | ==================================================================================== | 0 | SELECT STATEMENT | | | 1000 | | | | 1 | TABLE ACCESS FULL | SMALL_SEGMENTSIZE | 1000 | 1000 | 2 | 32768 | ==================================================================================== 20

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60. Plan hash value: 3426918692 ----------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | ----------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | |* 1 | FILTER | | 1 | | | 2 | TABLE ACCESS BY INDEX ROWID| FOO | 1 | 50 | |* 3 | INDEX RANGE SCAN | PK_FOO | 1 | 50 | ----------------------------------------------------------------- Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- 22

61. ✋ Plan hash value: 3426918692 ----------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | ----------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | |* 1 | FILTER | | 1 | | | 2 | TABLE ACCESS BY INDEX ROWID| FOO | 1 | 50 | |* 3 | INDEX RANGE SCAN | PK_FOO | 1 | 50 | ----------------------------------------------------------------- Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- 23

62. ✋ Plan hash value: 3426918692 ----------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | ----------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | |* 1 | FILTER | | 1 | | | 2 | TABLE ACCESS BY INDEX ROWID| FOO | 1 | 50 | |* 3 | INDEX RANGE SCAN | PK_FOO | 1 | 50 | ----------------------------------------------------------------- Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- 24

63. ✋ Plan hash value: 3426918692 ----------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | ----------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | |* 1 | FILTER | | 1 | | | 2 | TABLE ACCESS BY INDEX ROWID| FOO | 1 | 50 | |* 3 | INDEX RANGE SCAN | PK_FOO | 1 | 50 | ----------------------------------------------------------------- Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- INDEX_NAME UNIQUENES DISTINCT_KEYS CLUSTERING_FACTOR ---------- --------- ------------- ----------------- PK_FOO UNIQUE 20000 19993   可能性が高い 24

67.   Plan hash value: 3426918692 ----------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows | ----------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | |* 1 | FILTER | | 1 | | | 2 | TABLE ACCESS BY INDEX ROWID| FOO | 1 | 50 | |* 3 | INDEX RANGE SCAN | PK_FOO | 1 | 50 | ----------------------------------------------------------------- Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- 26

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72. INDEX_NAME CLUSTERING_FACTOR NUM_OF_TABLE_BLOCKS NUM_OF_TABLE_ROWS ----------- ----------------- ------------------- ----------------- PK_HICLS 992 80 1000 PK_LOCLS 72 80 1000 29

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76. Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| --------------------------------------------------------------   Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- 31

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78. Plan Hash # Value Executions --- ---------------- -------------- 1 1885085827 2000 2 1756993664 2000 3 3400946141 2000 4 13177233 2000 5 3564047035 2000 33

79. Plan Hash # Value Executions --- ---------------- -------------- 1 1885085827 2000 2 1756993664 2000 3 3400946141 2000 4 13177233 2000 5 3564047035 2000 33

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82. Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| --------------------------------------------------------------   Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| -------------------------------------------------------------- 35

83. Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| --------------------------------------------------------------   Plan hash value: 2962421549 -------------------------------------------------------------- | Id | Operation | Name | Starts | E-Rows |E-Bytes| -------------------------------------------------------------- | 0 | SELECT STATEMENT | | 1 | | | | 1 | SORT ORDER BY | | 1 | 5000 | 2485K| |* 2 | FILTER | | 1 | | | |* 3 | TABLE ACCESS FULL| FOO | 1 | 5000 | 2485K| --------------------------------------------------------------     35

88. Plan Hash # Value Executions --- ---------------- ------------- 1 1756993664 2000 2 3400946141 2000 3 1885085827 2000 4 13177233 2000 5 3564047035 2000 1 1756993664 2004 2 3564047035 5991 3 13177233 2000 4 3400946141 4 5 1885085827 1 1 13177233 10,000 Plan Hash # Value Executions --- ---------------- ------------- 1 3564047035 10,000 2 13177233 0 1 3564047035 10,000 38

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103.     ✔dba_sql_plan_dir_objects OWNER OBJECT OBJECT_NAME SUBOBJECT_NAME --------- ------ --------------- ------------------ MDSYS COLUMN RDF_LINK$ CANON_END_NODE_ID MDSYS COLUMN RDF_LINK$ G_ID MDSYS COLUMN RDF_LINK$ P_VALUE_ID MDSYS COLUMN RDF_LINK$ START_NODE_ID MDSYS TABLE RDF_LINK$ SH COLUMN PRODUCTS PROD_CATEGORY SH COLUMN PRODUCTS PROD_ID SH TABLE PRODUCTS ✔dba_sql_plan_directives; TYPE REASON ---------------- ------------------------------------ DYNAMIC_SAMPLING SINGLE TABLE CARDINALITY MISESTIMATE DYNAMIC_SAMPLING JOIN CARDINALITY MISESTIMATE DYNAMIC_SAMPLING GROUP BY CARDINALITY MISESTIMATE 43

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107. CBO (Cost Base Optimizer) SQL Transformation  (Join Elimination, View Merge, Vector Transform) Bind Peek Adaptive Cursor Sharing Statistics Feedback Dynamic Statistics Adaptive Plan SQL Plan Directives SQL Plan stability Management SQL Hints 46

108. CBO (Cost Base Optimizer) SQL Transformation  (Join Elimination, View Merge, Vector Transform) Bind Peek Adaptive Cursor Sharing Statistics Feedback Dynamic Statistics Adaptive Plan SQL Plan Directives SQL Plan stability Management SQL Hints ✌46

DB Tech Showcase 2016 - E35 - SQLチューニング総合診療所的予防医学

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DB Tech Showcase 2016 - E35 - SQLチューニング総合診療所的予防医学