oracle表空間查詢維護命令大全之三(臨時表空間)史上最全
--UNDO表空間匯總
--查看所有的表空間名字
SELECT NAME FROM V$TABLESPACE;
--創建新的UNDO表空間，並設置自動擴展參數;
CREATE UNDO TABLESPACE UNDOTBS2 DATAFILE 'D:\ORACLE\PRODUCT\10.1.0\ORADATA\ORCL\UNDOTBS02.DBF' SIZE 10M REUSE AUTOEXTEND ON NEXT 100M MAXSIZE UNLIMITED;
--注意：在OPEN狀態下某些時刻只能用一個UNDO表空間，如果要用新建的表空間，必須切換到該表空間:
ALTER SYSTEM SET UNDO_TABLESPACE = UNDO2;
--修改為自動管理
ALTER SYSTEM SET UNDO_MANAGEMENT = AUTO SCOPE = SPFILE;
修改UNDO的表空間管理方式為MANUAL ALTER SYSTEM SET UNDO_MANAGEMENT = MANUAL SCOPE = SPFILE;
--修改
--等待原UNDO表空間所有UNDO SEGMENT OFFLINE;
SELECT USN,
XACTS,
STATUS,
RSSIZE / 1024 / 1024 / 1024,
HWMSIZE / 1024 / 1024 / 1024,
SHRINKS
FROM V$ROLLSTAT
ORDER BY RSSIZE;
--刪除表空間
DROP TABLESPACE UNDO1 INCLUDING CONTENTS AND DATAFILES;
--更改UODO表空間的大小
ALTER DATABASE DATAFILE '/U2/ORADATA/SPRING/UNDOTBS01.DBF' RESIZE 1024M;
SELECT TABLESPACE_NAME, SEGMENT_TYPE, OWNER, SEGMENT_NAME
FROM DBA_EXTENTS
WHERE FILE_ID = 8
AND 565129 BETWEEN BLOCK_ID AND BLOCK_ID + BLOCKS - 1;
1, 臨時表空間的主要作用： 索引CREATE或REBUILD； ORDER BY 或 GROUP BY； DISTINCT 操作； UNION 或 INTERSECT 或 MINUS； SORT - MERGE JOINS； ANALYZE.
SELECT USERNAME, TEMPORARY_TABLESPACE FROM DBA_USERS;
查看默認臨時表空間
SELECT *
FROM DATABASE_PROPERTIES
WHERE PROPERTY_NAME = 'DEFAULT_TEMP_TABLESPACE';
--建立臨時表空間
CREATE TEMPORARY TABLESPACE TEMP_DATA TEMPFILE '/ORACLE/ORADATA/DB/TEMP_DATA.DBF' SIZE 50M
CREATE TEMPORARY TABLESPACE TEMP TEMPFILE '/U02/ORADATA/ORCL/ORCL/TEMP01.DBF' SIZE 6144M, '/U02/ORADATA/ORCL/ORCL/TEMP02.DBF' SIZE 6144M;
--修改臨時表空間的大小
ALTER DATABASE TEMPFILE '/U2/ORADATA/SPRING/TEMP_DATA.DBF' RESIZE 1024M;
CREATE TEMPORARY TABLESPACE TEMP1 TEMPFILE '/U02/ORADATA/ORCL/ORCL/TEMP101.DBF' SIZE 4056M;
--修改數據庫的默認臨時表空間
ALTER DATABASE DEFAULT TEMPORARY TABLESPACE TEMP1;
--刪除臨時表空間
DROP TABLESPACE TEMP INCLUDING CONTENTS AND DATAFILES;
--清理臨時表空間
ALTER TABLESPACE TEMP SHRINK SPACE KEEP 20M;
--自動將表空間的臨時文件縮小到最小可能的大小
ALTER TABLESPACE TEMP SHRINK TEMPFILE ’ / U02 / ORACLE / DATA / LMTEMP02.DBF’;
2, 臨時表空間過大，重新臨時表空間的具體步驟匯總：
1.創建中轉臨時表空間 CREATETEMPORARYTABLESPACETEMP1 TEMPFILE '/ORACLE/ORADATA/SECOOLER/TEMP02.DBF' SIZE 512M REUSE AUTOEXTEND ON NEXT 1M MAXSIZE UNLIMITED;
2.改變缺省臨時表空間為剛剛創建的新臨時表空間TEMP1 ALTER DATABASE DEFAULT TEMPORARY TABLESPACE TEMP1;
驗證用戶的臨時表空間為TEMP1
SELECT USERNAME, TEMPORARY_TABLESPACE FROM DBA_USERS;
3.刪除原臨時表空間 DROP TABLESPACE TEMP INCLUDING CONTENTS AND DATAFILES;
4.重建臨時表空間 CREATE TEMPORARY TABLESPACE TEMP TEMPFILE '/ORACLE/ORADATA/SECOOLER/TEMP01.DBF' SIZE 512M REUSE AUTOEXTEND ON NEXT 1M MAXSIZE UNLIMITED;
5.重置缺省臨時表空間為新建的TEMP表空間 ALTER DATABASE DEFAULT TEMPORARY TABLESPACE TEMP;
驗證用戶的臨時表空間為TEMP
SELECT USERNAME, TEMPORARY_TABLESPACE FROM DBA_USERS;
3、查看誰在用臨時表空間
SELECT SE.USERNAME,
SE.SID,
SE.SERIAL#,
SE.SQL_ADDRESS,
SE.MACHINE,
SE.PROGRAM,
SU.TABLESPACE,
SU.SEGTYPE,
SU.CONTENTS FROM V$SESSION SE,
V$SORT_USAGE SU WHERE SE.SADDR = SU.SESSION_ADDR;
4、查看臨時表空間TEMP空閒情況
SELECT TABLESPACE_NAME,
FILE_ID,
BYTES_USED / 1024 / 1024,
BYTES_FREE / 1024 / 1024
FROM V$TEMP_SPACE_HEADER;
5, 具體到某個SID臨時表空間使用情況
SELECT B.TABLESPACE,
B.SEGFILE#,
B.SEGBLK#,
B.BLOCKS,
B.BLOCKS * 32 / 1024 / 1024,
A.SID,
A.SERIAL#,
A.USERNAME,
A.OSUSER,
A.STATUS,
C.SQL_TEXT,
B.CONTENTS
FROM V$SESSION A, V$SORT_USAGE B, V$SQL C
WHERE A.SADDR = B.SESSION_ADDR
AND A.SQL_ADDRESS = C.ADDRESS(+)
ORDER BY B.BLOCKS DESC
在創建用戶時,
有一個默認的表空間的參數. 可以通過查看視圖DATABASE_PROPERTIES可以看到相應的信息.
SELECT A.PROPERTY_NAME, A.PROPERTY_VALUE
FROM DATABASE_PROPERTIES A
WHERE A.PROPERTY_NAME LIKE '%DEFAULT%';
6, /*查看臨時表空間總體使用情況*/
SELECT TMP_TBS.TABLESPACE_NAME,
SUM(TMP_TBS.TOTAL_MB) TOTAL_MB,
SUM(USED_TOT.USED_MB) USED_MB,
SUM(USED_TOT.USED_MB) / SUM(TMP_TBS.TOTAL_MB) * 100 USED_PERSENT
FROM (SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024 TOTAL_MB
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME) TMP_TBS,
(SELECT TMP_USED.TABLESPACE,
SUM(TMP_USED.BLOCKS * PARA.DB_BLOCK_SIZE) / 1024 / 1024 USED_MB
FROM V$SORT_USAGE TMP_USED,
(SELECT VALUE DB_BLOCK_SIZE
FROM V$PARAMETER
WHERE NAME = 'DB_BLOCK_SIZE') PARA
GROUP BY TMP_USED.TABLESPACE) USED_TOT
WHERE TMP_TBS.TABLESPACE_NAME = USED_TOT.TABLESPACE(+)
GROUP BY TMP_TBS.TABLESPACE_NAME;
7, /*查看臨時表空間中排序段和數據段的使用情況*/
SELECT TMP_TBS.TABLESPACE_NAME,
USED_TOT.SEGTYPE TEMP_SEG_TYPE,
SUM(TMP_TBS.TOTAL_MB) TOTAL_MB,
SUM(USED_TOT.USED_MB) USED_MB,
SUM(USED_TOT.USED_MB) / SUM(TMP_TBS.TOTAL_MB) * 100 USED_PERSENT
FROM (SELECT TABLESPACE_NAME, SUM(BYTES) / 1024 / 1024 TOTAL_MB
FROM DBA_TEMP_FILES
GROUP BY TABLESPACE_NAME) TMP_TBS,
(SELECT TMP_USED.TABLESPACE,
TMP_USED.SEGTYPE,
SUM(TMP_USED.BLOCKS * PARA.DB_BLOCK_SIZE) / 1024 / 1024 USED_MB
FROM V$SORT_USAGE TMP_USED,
(SELECT VALUE DB_BLOCK_SIZE
FROM V$PARAMETER
WHERE NAME = 'DB_BLOCK_SIZE') PARA
GROUP BY TMP_USED.TABLESPACE, TMP_USED.SEGTYPE) USED_TOT
WHERE TMP_TBS.TABLESPACE_NAME = USED_TOT.TABLESPACE(+)
GROUP BY TMP_TBS.TABLESPACE_NAME, USED_TOT.SEGTYPE;
