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Oracle 臨時(shí)表空間 SQL語(yǔ)句
2021-09-13 10:20:03

以下總結(jié)了關(guān)于 Oracle 數(shù)據(jù)庫(kù)臨時(shí)表空間的相關(guān) SQL 語(yǔ)句:

Oracle 臨時(shí)表空間創(chuàng)建和添加數(shù)據(jù)文件:

--創(chuàng)建臨時(shí)表空間 tempdata
create temporary tablespace tempdata tempfile '/oradata/orcl/tempdata01.dbf' size 30g autoextend off;
--新增臨時(shí)表空間數(shù)據(jù)文件
alter tablespace tempdata add tempfile '/oradata/orcl/tempdata02.dbf' size 30g autoextend off;
--刪除臨時(shí)表空間數(shù)據(jù)文件
alter tablespace tempdata drop tempfile '/oradata/orcl/tempdata02.dbf' including datafiles;
--調(diào)整臨時(shí)表空間數(shù)據(jù)文件大小
alter database tempfile '/oradata/orcl/tempdata01.dbf' resize 2G;
--設(shè)置自動(dòng)擴(kuò)展
alter database tempfile '/oradata/orcl/tempdata01.dbf' autoextend on;
--切換默認(rèn)臨時(shí)表空間
alter database default temporary tablespace tempdata;
--刪除臨時(shí)表空間
drop tablespace temp including contents and datafiles cascade constraints;
--收縮臨時(shí)表空間
alter tablespace temp shrink space keep 8G;
alter tablespace temp shrink tempfile '/oradata/orcl/tempdata01.dbf';

查看當(dāng)前默認(rèn)臨時(shí)表空間:

SELECT PROPERTY_NAME, PROPERTY_VALUE FROM DATABASE_PROPERTIES WHERE PROPERTY_NAME='DEFAULT_TEMP_TABLESPACE';

查詢temp表空間使用率:

select  df.tablespace_name "Tablespace",
       df.totalspace "Total(MB)",
       nvl(FS.UsedSpace, 0)  "Used(MB)",
       (df.totalspace - nvl(FS.UsedSpace, 0)) "Free(MB)",
       round(100 * (1-( nvl(fs.UsedSpace, 0) / df.totalspace)), 2) "Pct. Free(%)"
FROM  (SELECT tablespace_name, round(SUM(bytes) / 1048576) TotalSpace
        FROM   dba_TEMP_files
        GROUP  BY tablespace_name) df,
       (SELECT tablespace_name, ROUND(SUM(bytes_used) / 1024 / 1024)  UsedSpace
        FROM   gV$temp_extent_pool
        GROUP  BY tablespace_name) fs  WHERE  df.tablespace_name = fs.tablespace_name(+)

查看臨時(shí)表空間對(duì)應(yīng)的臨時(shí)文件的使用情況:

SELECT TABLESPACE_NAME         AS TABLESPACE_NAME    ,
    BYTES_USED/1024/1024/1024    AS TABLESAPCE_USED  ,
    BYTES_FREE/1024/1024/1024  AS TABLESAPCE_FREE
FROM V$TEMP_SPACE_HEADER
ORDER BY 1 DESC;

查詢實(shí)時(shí)使用temp表空間的sql_id和sid:

set linesize 260 pagesize 1000
col machine for a40
col program for a40
SELECT se.username,
       sid,
       serial#,
       se.sql_id
       machine,
       program,
       tablespace,
       segtype,
       (su.BLOCKS*8/1024/1024) GB
  FROM v$session se, v$sort_usage su
 WHERE se.saddr = su.session_addr
 order by su.BLOCKS desc;

/*需要注意的是這里查詢sql_id要用v$session視圖的sql_id,而不要用v$sort_usage視圖的sql_id,v$sort_usage視圖里面的sql_id是不準(zhǔn)確的*/

查詢歷史的temp表空間的使用的SQL_ID:

select a.SQL_ID,
       a.SAMPLE_TIME,
       a.program,
       sum(trunc(a.TEMP_SPACE_ALLOCATED / 1024 / 1024)) MB
  from v$active_session_history a
 where TEMP_SPACE_ALLOCATED is not null 
 and sample_time between
 to_date('&date1', 'yyyy-mm-dd hh24:mi:ss') and
 to_date('&date2', 'yyyy-mm-dd hh24:mi:ss')
 group by a.sql_id,a.SAMPLE_TIME,a.PROGRAM
 order by 2 asc,4 desc;

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本文摘自 :https://blog.51cto.com/l

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