Oracle 11g统计表空间使用率很慢-Mysql Tutorial-php.cn

Home

Database

Mysql Tutorial

Oracle 11g统计表空间使用率很慢

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 07, 2016 pm 02:51 PM

oracle Usage rate on site space statistics

现场统计表空间很慢。
SELECT T1.TABLESPACE_NAME,
TOTAL_SPACE,
TOTAL_SPACE - FREE_SPACE USED_SPACE,
FREE_SPACE
FROM (SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024/ 1024 TOTAL_SPACE
FROM DBA_DATA_FILES
GROUP BY TABLESPACE_NAME) T1,
(SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024/ 1024 FREE_SPACE
FROM DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) T2

WHERE T1.TABLESPACE_NAME = T2.TABLESPACE_NAME;

主要是这条SQL慢，花了五分半钟，看是和垃圾回收站相关的表。

SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024/ 1024 FREE_SPACE
FROM DBA_FREE_SPACE GROUP BY TABLESPACE_NAME
--------------------------------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | Reads | OMem | 1Mem | Used-Mem |
--------------------------------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | | 12 |00:05:29.43 | 561K| 102K| | | |
| 1 | HASH GROUP BY | | 1 | 7 | 12 |00:05:29.43 | 561K| 102K| 3532K| 1450K| 1099K (0)|
| 2 | VIEW | DBA_FREE_SPACE | 1 | 13208 | 35897 |00:05:29.42 | 561K| 102K| | | |
| 3 | UNION-ALL | | 1 | | 35897 |00:05:29.41 | 561K| 102K| | | |
| 4 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
| 5 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
| 6 | TABLE ACCESS CLUSTER | FET$ | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
| 7 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | 0 | | | |
|* 8 | TABLE ACCESS CLUSTER | TS$ | 0 | 1 | 0 |00:00:00.01 | 0 | 0 | | | |
|* 9 | INDEX UNIQUE SCAN | I_TS# | 0 | 1 | 0 |00:00:00.01 | 0 | 0 | | | |
|* 10 | INDEX UNIQUE SCAN | I_FILE2 | 0 | 1 | 0 |00:00:00.01 | 0 | 0 | | | |
| 11 | NESTED LOOPS | | 1 | 13126 | 13608 |00:00:00.18 | 1864 | 0 | | | |
| 12 | NESTED LOOPS | | 1 | 13126 | 13608 |00:00:00.16 | 1860 | 0 | | | |
|* 13 | TABLE ACCESS CLUSTER | TS$ | 1 | 12 | 12 |00:00:00.01 | 19 | 0 | | | |
| 14 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | 0 | | | |
|* 15 | FIXED TABLE FIXED INDEX | X$KTFBFE (ind:1) | 12 | 1059 | 13608 |00:00:00.15 | 1841 | 0 | | | |
|* 16 | INDEX UNIQUE SCAN | I_FILE2 | 13608 | 1 | 13608 |00:00:00.01 | 4 | 0 | | | |
|* 17 | HASH JOIN | | 1 | 80 | 22289 |00:05:29.22 | 559K| 102K| 2461K| 2461K| 2209K (0)|
| 18 | NESTED LOOPS | | 1 | 84 | 22289 |00:05:29.20 | 559K| 102K| | | |
|* 19 | HASH JOIN | | 1 | 5807 | 22289 |00:05:29.14 | 559K| 102K| 1557K| 1557K| 1673K (0)|
| 20 | TABLE ACCESS FULL | RECYCLEBIN$ | 1 | 5807 | 5807 |00:00:00.01 | 529 | 0 | | | |
| 21 | FIXED TABLE FULL | X$KTFBUE | 1 | 100K| 990K|00:05:28.61 | 558K| 102K| | | |
|* 22 | INDEX UNIQUE SCAN | I_FILE2 | 22289 | 1 | 22289 |00:00:00.04 | 4 | 0 | | | |
|* 23 | TABLE ACCESS CLUSTER | TS$ | 1 | 12 | 12 |00:00:00.01 | 19 | 0 | | | |
| 24 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | 0 | | | |
| 25 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
| 26 | NESTED LOOPS | | 1 | 968 | 0 |00:00:00.01 | 19 | 0 | | | |
| 27 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
| 28 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
|* 29 | TABLE ACCESS CLUSTER | TS$ | 1 | 1 | 0 |00:00:00.01 | 19 | 0 | | | |
| 30 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | 0 | | | |
| 31 | TABLE ACCESS CLUSTER | UET$ | 0 | 1 | 0 |00:00:00.01 | 0 | 0 | | | |
|* 32 | INDEX RANGE SCAN | I_FILE#_BLOCK# | 0 | 1 | 0 |00:00:00.01 | 0 | 0 | | | |
|* 33 | INDEX UNIQUE SCAN | I_FILE2 | 0 | 1 | 0 |00:00:00.01 | 0 | 0 | | | |
|* 34 | INDEX RANGE SCAN | RECYCLEBIN$_TS | 0 | 968 | 0 |00:00:00.01 | 0 | 0 | | | |
|* 35 | TABLE ACCESS BY INDEX ROWID| RECYCLEBIN$ | 0 | 2 | 0 |00:00:00.01 | 0 | 0 | | | |
--------------------------------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
8 - filter("TS"."BITMAPPED"=0)
9 - access("TS"."TS#"="F"."TS#")
10 - access("F"."TS#"="FI"."TS#" AND "F"."FILE#"="FI"."RELFILE#")
13 - filter((INTERNAL_FUNCTION("TS"."ONLINE$") AND "TS"."CONTENTS$"=0 AND "TS"."BITMAPPED"0))
15 - filter("TS"."TS#"="F"."KTFBFETSN")
16 - access("F"."KTFBFETSN"="FI"."TS#" AND "F"."KTFBFEFNO"="FI"."RELFILE#")
17 - access("TS"."TS#"="RB"."TS#")
19 - access("U"."KTFBUESEGTSN"="RB"."TS#" AND "U"."KTFBUESEGFNO"="RB"."FILE#" AND "U"."KTFBUESEGBNO"="RB"."BLOCK#")
22 - access("RB"."TS#"="FI"."TS#" AND "U"."KTFBUEFNO"="FI"."RELFILE#")
23 - filter((INTERNAL_FUNCTION("TS"."ONLINE$") AND "TS"."CONTENTS$"=0 AND "TS"."BITMAPPED"0))
29 - filter("TS"."BITMAPPED"=0)
32 - access("TS"."TS#"="U"."TS#")
33 - access("U"."TS#"="FI"."TS#" AND "U"."SEGFILE#"="FI"."RELFILE#")
34 - access("U"."TS#"="RB"."TS#")
35 - filter(("U"."SEGFILE#"="RB"."FILE#" AND "U"."SEGBLOCK#"="RB"."BLOCK#"))

SQL> purge dba_recyclebin;
SQL> SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024/ 1024 FREE_SPACE
FROM DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME;

SQL> select * from table(dbms_xplan.display_cursor(null,null,'allstats last'));

PLAN_TABLE_OUTPUT
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
SQL_ID 81s4p9cv3060h, child number 0
-------------------------------------
SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024/ 1024 FREE_SPACE
FROM DBA_FREE_SPACE GROUP BY TABLESPACE_NAME
-----------------------------------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Starts | E-Rows | A-Rows | A-Time | Buffers | OMem | 1Mem | Used-Mem |
-----------------------------------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | 1 | | 12 |00:00:00.18 | 2431 | | | |
| 1 | HASH GROUP BY | | 1 | 7 | 12 |00:00:00.18 | 2431 | 1903K| 1450K| 1103K (0)|
| 2 | VIEW | DBA_FREE_SPACE | 1 | 13208 | 13971 |00:00:00.18 | 2431 | | | |
| 3 | UNION-ALL | | 1 | | 13971 |00:00:00.18 | 2431 | | | |
| 4 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
| 5 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
| 6 | TABLE ACCESS CLUSTER | FET$ | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
| 7 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | | | |
|* 8 | TABLE ACCESS CLUSTER | TS$ | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|* 9 | INDEX UNIQUE SCAN | I_TS# | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|* 10 | INDEX UNIQUE SCAN | I_FILE2 | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
| 11 | NESTED LOOPS | | 1 | 13126 | 13971 |00:00:00.17 | 1864 | | | |
| 12 | NESTED LOOPS | | 1 | 13126 | 13971 |00:00:00.15 | 1860 | | | |
|* 13 | TABLE ACCESS CLUSTER | TS$ | 1 | 12 | 12 |00:00:00.01 | 19 | | | |
| 14 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | | | |
|* 15 | FIXED TABLE FIXED INDEX | X$KTFBFE (ind:1) | 12 | 1059 | 13971 |00:00:00.15 | 1841 | | | |
|* 16 | INDEX UNIQUE SCAN | I_FILE2 | 13971 | 1 | 13971 |00:00:00.01 | 4 | | | |
|* 17 | HASH JOIN | | 1 | 80 | 0 |00:00:00.01 | 529 | 1969K| 1969K| 360K (0)|
| 18 | NESTED LOOPS | | 1 | 84 | 0 |00:00:00.01 | 529 | | | |
|* 19 | HASH JOIN | | 1 | 5807 | 0 |00:00:00.01 | 529 | 1557K| 1557K| 496K (0)|
| 20 | TABLE ACCESS FULL | RECYCLEBIN$ | 1 | 5807 | 0 |00:00:00.01 | 529 | | | |
| 21 | FIXED TABLE FULL | X$KTFBUE | 0 | 100K| 0 |00:00:00.01 | 0 | | | |
|* 22 | INDEX UNIQUE SCAN | I_FILE2 | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|* 23 | TABLE ACCESS CLUSTER | TS$ | 0 | 12 | 0 |00:00:00.01 | 0 | | | |
| 24 | INDEX FULL SCAN | I_TS# | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
| 25 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
| 26 | NESTED LOOPS | | 1 | 968 | 0 |00:00:00.01 | 19 | | | |
| 27 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
| 28 | NESTED LOOPS | | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
|* 29 | TABLE ACCESS CLUSTER | TS$ | 1 | 1 | 0 |00:00:00.01 | 19 | | | |
| 30 | INDEX FULL SCAN | I_TS# | 1 | 1 | 18 |00:00:00.01 | 1 | | | |
| 31 | TABLE ACCESS CLUSTER | UET$ | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|* 32 | INDEX RANGE SCAN | I_FILE#_BLOCK# | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|* 33 | INDEX UNIQUE SCAN | I_FILE2 | 0 | 1 | 0 |00:00:00.01 | 0 | | | |
|* 34 | INDEX RANGE SCAN | RECYCLEBIN$_TS | 0 | 968 | 0 |00:00:00.01 | 0 | | | |
|* 35 | TABLE ACCESS BY INDEX ROWID| RECYCLEBIN$ | 0 | 2 | 0 |00:00:00.01 | 0 | | | |
-----------------------------------------------------------------------------------------------------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
8 - filter("TS"."BITMAPPED"=0)
9 - access("TS"."TS#"="F"."TS#")
10 - access("F"."TS#"="FI"."TS#" AND "F"."FILE#"="FI"."RELFILE#")
13 - filter((INTERNAL_FUNCTION("TS"."ONLINE$") AND "TS"."CONTENTS$"=0 AND "TS"."BITMAPPED"0))
15 - filter("TS"."TS#"="F"."KTFBFETSN")
16 - access("F"."KTFBFETSN"="FI"."TS#" AND "F"."KTFBFEFNO"="FI"."RELFILE#")
17 - access("TS"."TS#"="RB"."TS#")
19 - access("U"."KTFBUESEGTSN"="RB"."TS#" AND "U"."KTFBUESEGFNO"="RB"."FILE#" AND "U"."KTFBUESEGBNO"="RB"."BLOCK#")
22 - access("RB"."TS#"="FI"."TS#" AND "U"."KTFBUEFNO"="FI"."RELFILE#")
23 - filter((INTERNAL_FUNCTION("TS"."ONLINE$") AND "TS"."CONTENTS$"=0 AND "TS"."BITMAPPED"0))
29 - filter("TS"."BITMAPPED"=0)
32 - access("TS"."TS#"="U"."TS#")
33 - access("U"."TS#"="FI"."TS#" AND "U"."SEGFILE#"="FI"."RELFILE#")
34 - access("U"."TS#"="RB"."TS#")
35 - filter(("U"."SEGFILE#"="RB"."FILE#" AND "U"."SEGBLOCK#"="RB"."BLOCK#"))

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn