以下总结了关于 Oracle 数据库临时表空间的相关 SQL 语句: Oracle 临时表空间创建和添加数据文件: --创建临时表空间 tempdatacreate temporary tablespace tempdata tempfile '/oradata/orcl/tempdata01.dbf' size 30g autoextend off;--新增临时表空间数据文件alter tablespace tempdata add tempfile '/oradata/orcl/tempdata02.dbf' size 30g autoextend off;--删除临时表空间数据文件alter tablespace tempdata drop tempfile '/oradata/orcl/tempdata02.dbf' including datafiles;--调整临时表空间数据文件大小alter database tempfile '/oradata/orcl/tempdata01.dbf' resize 2G;--设置自动扩展alter database tempfile '/oradata/orcl/tempdata01.dbf' autoextend on;--切换默认临时表空间alter database default temporary tablespace tempdata;--删除临时表空间drop tablespace temp including contents and datafiles cascade constraints;--收缩临时表空间alter tablespace temp shrink space keep 8G;alter tablespace temp shrink tempfile '/oradata/orcl/tempdata01.dbf'; 查看当前默认临时表空间: SELECT PROPERTY_NAME, PROPERTY_VALUE FROM DATABASE_PROPERTIES WHERE PROPERTY_NAME='DEFAULT_TEMP_TABLESPACE'; 查询temp表空间使用率: 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) TotalSpaceFROM dba_TEMP_filesGROUP BY tablespace_name) df, (SELECT tablespace_name, ROUND(SUM(bytes_used) / 1024 / 1024) UsedSpaceFROM gV$temp_extent_poolGROUP BY tablespace_name) fs WHERE df.tablespace_name = fs.tablespace_name(+) 查看临时表空间对应的临时文件的使用情况: SELECT TABLESPACE_NAME AS TABLESPACE_NAME ,BYTES_USED/1024/1024/1024 AS TABLESAPCE_USED ,BYTES_FREE/1024/1024/1024 AS TABLESAPCE_FREEFROM V$TEMP_SPACE_HEADERORDER BY 1 DESC; 查询实时使用temp表空间的sql_id和sid: set linesize 260 pagesize 1000col machine for a40 col program for a40SELECT 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;/*需要注意的是这里查询sql_id要用v$session视图的sql_id,而不要用v$sort_usage视图的sql_id,v$sort_usage视图里面的sql_id是不准确的*/ 查询历史的temp表空间的使用的SQL_ID: select a.SQL_ID, a.SAMPLE_TIME, a.program, sum(trunc(a.TEMP_SPACE_ALLOCATED / 1024 / 1024)) MB from v$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; 本次分享到此结束啦~ 如果觉得文章对你有帮助,点赞、收藏、关注、评论,一键四连支持,你的支持就是我创作最大的动力。 |
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