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一个表空间使用率查询sql的优化(九)
2015-11-21 01:35:13 来源: 作者: 【 】 浏览:9
Tags:一个 空间 使用率 查询 sql 优化
--------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | ---------------------------------------------------------------------------------------------------------- | 0 | SELECT STATEMENT | | 3 | 178 | 20 (25)| 00:00:01 | | 1 | SORT ORDER BY | | 3 | 178 | 19 (22)| 00:00:01 | | 2 | UNION-ALL | | | | | | |* 3 | HASH JOIN OUTER | | 2 | 120 | 16 (19)| 00:00:01 | | 4 | VIEW | | 2 | 60 | 5 (20)| 00:00:01 | | 5 | HASH GROUP BY | | 2 | 68 | 5 (20)| 00:00:01 | | 6 | VIEW | DBA_DATA_FILES | 2 | 68 | 4 (0)| 00:00:01 | | 7 | UNION-ALL | | | | | | | 8 | NESTED LOOPS | | 1 | 356 | 2 (0)| 00:00:01 | | 9 | NESTED LOOPS | | 1 | 341 | 1 (0)| 00:00:01 | | 10 | NESTED LOOPS | | 1 | 328 | 1 (0)| 00:00:01 | |* 11 | FIXED TABLE FULL | X$KCCFN | 1 | 310 | 0 (0)| 00:00:01 | |* 12 | TABLE ACCESS BY INDEX ROWID| FILE$ | 1 | 18 | 1 (0)| 00:00:01 | |* 13 | INDEX UNIQUE SCAN | I_FILE1 | 1 | | 0 (0)| 00:00:01 | |* 14 | FIXED TABLE FIXED INDEX | X$KCCFE (ind:1) | 20 | 260 | 0 (0)| 00:00:01 | | 15 | TABLE ACCESS CLUSTER | TS$ | 1 | 15 | 1 (0)| 00:00:01 | |* 16 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 | | 17 | NESTED LOOPS | | 1 | 399 | 2 (0)| 00:00:01 | | 18 | NESTED LOOPS | | 1 | 386 | 2 (0)| 00:00:01 | | 19 | NESTED LOOPS | | 1 | 377 | 1 (0)| 00:00:01 | | 20 | NESTED LOOPS | | 1 | 362 | 0 (0)| 00:00:01 | |* 21 | FIXED TABLE FULL | X$KCCFN | 1 | 310 | 0 (0)| 00:00:01 | |* 22 | FIXED TABLE FIXED INDEX | X$KTFBHC (ind:1) | 1 | 52 | 0 (0)| 00:00:01 | | 23 | TABLE ACCESS CLUSTER | TS$ | 1 | 15 | 1 (0)| 00:00:01 | |* 24 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 | |* 25 | TABLE ACCESS BY INDEX ROWID | FILE$ | 1 | 9 | 1 (0)| 00:00:01 | |* 26 | INDEX UNIQUE SCAN | I_FILE1 | 1 | | 0 (0)| 00:00:01 | |* 27 | FIXED TABLE FIXED INDEX | X$KCCFE (ind:1) | 20 | 260 | 0 (0)| 00:00:01 | | 28 | VIEW | | 5 | 150 | 11 (19)| 00:00:01 | | 29 | HASH GROUP BY | | 5 | 105 | 11 (19)| 00:00:01 | | 30 | VIEW | DBA_FREE_SPACE | 79 | 1659 | 10 (10)| 00:00:01 | | 31 | UNION-ALL | | | | | | | 32 | NESTED LOOPS | | 1 | 64 | 1 (0)| 00:00:01 | | 33 | NESTED LOOPS | | 1 | 45 | 1 (0)| 00:00:01 | | 34 | INDEX FULL SCAN | I_FILE2 | 5 | 30 | 1 (0)| 00:00:01 | |* 35 | TABLE ACCESS CLUSTER | FET$ | 1 | 39 | 0 (0)| 00:00:01 | |* 36 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 | |* 37 | TABLE ACCESS CLUSTER | TS$ | 1 | 19 | 0 (0)| 00:00:01 | |* 38 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 | | 39 | NESTED LOOPS | | 76 | 5320 | 4 (0)| 00:00:01 | | 40 | NESTED LOOPS | | 76 | 4864 | 4 (0)| 00:00:01 | |* 41 | TABLE ACCESS FULL | TS$ | 5 | 125 | 4 (0)| 00:00:01 | |* 42 | FIXED TABLE FIXED INDEX | X$KTFBFE (ind:1) | 17 | 663 | 0 (0)| 00:00:01 | |* 43 | INDEX UNIQUE SCAN | I_FILE2 | 1 | 6 | 0 (0)| 00:00:01 | | 44 | NESTED LOOPS | | 1 | 135 | 2 (50)| 00:00:01 | | 45 | NESTED LOOPS | | 1 | 70 | 1 (0)| 00:00:01 | | 46 | NESTED LOOPS | | 1 | 45 | 1 (0)| 00:00:01 | | 47 | INDEX FULL SCAN | I_FILE2 | 5 | 30 | 1 (0)| 00:00:01 | | 48 | TABLE ACCESS BY INDEX ROWID| RECYCLEBIN$ | 1 | 39 | 0 (0)| 00:00:01 | |* 49 | INDEX RANGE SCAN | RECYCLEBIN$_TS | 1 | | 0 (0)| 00:00:01 | |* 50 | TABLE ACCESS CLUSTER | TS$ | 1 | 25 | 0 (0)| 00:00:01 | |* 51 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0 (0)| 00:00:01 | |* 52 | FIXED TABLE FIXED INDEX | X$KTFBUE (ind:1) | 1 | 65 | 1 (100)| 00:00:01 | | 53 | NESTED LOOPS | | 1 | 116 | 3 (0)| 00:00:01 | | 54 | NESTED LOOPS | | 1 | 97 | 3 (0)| 00:00:01 | | 55 | MERGE JOIN CARTESIAN | | 1 | 45 | 3 (0)| 00:00:01 | | 56 | TABLE ACCESS FULL | RECYCLEBIN$ | 1 | 39 | 2 (0)| 00:00:01 | | 57 | BUFFER SORT | | 5 | 30 | 1 (0)| 00:00:01 | | 58 | INDEX FULL SCAN | I_FILE2 | 5 | 30 | 1 (0)| 00:00:01 | | 59 | TABLE ACCESS CLUSTER | UET$ | 1 | 52 | 0 (0)| 00:00:01 | |* 60 | INDEX UNIQUE SCAN | I_FILE#_BLOCK# | 1 | | 0 (0)| 00:00:01 | |* 61 | TABLE ACCESS CLUSTER | TS$ | 1 | 19 | 0 (0)| 00:00:01 | |* 62 | INDEX UNIQUE SCAN | I_TS# | 1 | | 0
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