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

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Assassin's Creed Shadows: Seashell Riddle Solution

3 weeks ago By DDD

What's New in Windows 11 KB5054979 & How to Fix Update Issues

2 weeks ago By DDD

Where to find the Crane Control Keycard in Atomfall

3 weeks ago By DDD

Assassin's Creed Shadows - How To Find The Blacksmith And Unlock Weapon And Armour Customisation

1 months ago By DDD

Roblox: Dead Rails - How To Complete Every Challenge

3 weeks ago By DDD

Hot Tools

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Where is the login entrance for gmail email?

7628

CakePHP Tutorial

1389

What is the format of the account name of steam

win11 activation key permanent

nyt connections hints and answers

141

Related knowledge

How to encrypt oracle view Apr 11, 2025 pm 08:30 PM

Oracle View Encryption allows you to encrypt data in the view, thereby enhancing the security of sensitive information. The steps include: 1) creating the master encryption key (MEk); 2) creating an encrypted view, specifying the view and MEk to be encrypted; 3) authorizing users to access the encrypted view. How encrypted views work: When a user querys for an encrypted view, Oracle uses MEk to decrypt data, ensuring that only authorized users can access readable data.

How to delete all data from oracle Apr 11, 2025 pm 08:36 PM

Deleting all data in Oracle requires the following steps: 1. Establish a connection; 2. Disable foreign key constraints; 3. Delete table data; 4. Submit transactions; 5. Enable foreign key constraints (optional). Be sure to back up the database before execution to prevent data loss.

What to do if the oracle can't be opened Apr 11, 2025 pm 10:06 PM

Solutions to Oracle cannot be opened include: 1. Start the database service; 2. Start the listener; 3. Check port conflicts; 4. Set environment variables correctly; 5. Make sure the firewall or antivirus software does not block the connection; 6. Check whether the server is closed; 7. Use RMAN to recover corrupt files; 8. Check whether the TNS service name is correct; 9. Check network connection; 10. Reinstall Oracle software.

How to paginate oracle database Apr 11, 2025 pm 08:42 PM

Oracle database paging uses ROWNUM pseudo-columns or FETCH statements to implement: ROWNUM pseudo-columns are used to filter results by row numbers and are suitable for complex queries. The FETCH statement is used to get the specified number of first rows and is suitable for simple queries.

How to solve the problem of closing oracle cursor Apr 11, 2025 pm 10:18 PM

The method to solve the Oracle cursor closure problem includes: explicitly closing the cursor using the CLOSE statement. Declare the cursor in the FOR UPDATE clause so that it automatically closes after the scope is ended. Declare the cursor in the USING clause so that it automatically closes when the associated PL/SQL variable is closed. Use exception handling to ensure that the cursor is closed in any exception situation. Use the connection pool to automatically close the cursor. Disable automatic submission and delay cursor closing.

How to create cursors in oracle loop Apr 12, 2025 am 06:18 AM

In Oracle, the FOR LOOP loop can create cursors dynamically. The steps are: 1. Define the cursor type; 2. Create the loop; 3. Create the cursor dynamically; 4. Execute the cursor; 5. Close the cursor. Example: A cursor can be created cycle-by-circuit to display the names and salaries of the top 10 employees.

How to stop oracle database Apr 12, 2025 am 06:12 AM

To stop an Oracle database, perform the following steps: 1. Connect to the database; 2. Shutdown immediately; 3. Shutdown abort completely.

How to create oracle dynamic sql Apr 12, 2025 am 06:06 AM

SQL statements can be created and executed based on runtime input by using Oracle's dynamic SQL. The steps include: preparing an empty string variable to store dynamically generated SQL statements. Use the EXECUTE IMMEDIATE or PREPARE statement to compile and execute dynamic SQL statements. Use bind variable to pass user input or other dynamic values to dynamic SQL. Use EXECUTE IMMEDIATE or EXECUTE to execute dynamic SQL statements.

See all articles