1.查询用户(数据)表空间
SELECT UPPER(F.TABLESPACE_NAME) "表空间名",
D.TOT_GROOTTE_MB "表空间大小(M)",
D.TOT_GROOTTE_MB - F.TOTAL_BYTES "已使用空间(M)",
TO_CHAR(ROUND((D.TOT_GROOTTE_MB - F.TOTAL_BYTES) / D.TOT_GROOTTE_MB * 100,
2),
'990.99') "使用比",
F.TOTAL_BYTES "空闲空间(M)",
F.MAX_BYTES "最大块(M)"
FROM (SELECT TABLESPACE_NAME,
ROUND(SUM(BYTES) / (1024 * 1024), 2) TOTAL_BYTES,
ROUND(MAX(BYTES) / (1024 * 1024), 2) MAX_BYTES
FROM SYS.DBA_FREE_SPACE
GROUP BY TABLESPACE_NAME) F,
(SELECT DD.TABLESPACE_NAME,
ROUND(SUM(DD.BYTES) / (1024 * 1024), 2) TOT_GROOTTE_MB
FROM SYS.DBA_DATA_FILES DD
GROUP BY DD.TABLESPACE_NAME) D
WHERE D.TABLESPACE_NAME = F.TABLESPACE_NAME
ORDER BY 4 DESC
2.查询临时表空间
SELECT d.status "Status", d.tablespace_name "Name", d.CONTENTS "Type",
d.extent_management "Extent Management",
TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99,999,990.900') "Size (M)",
TO_CHAR (NVL (t.BYTES, 0) / 1024 / 1024, '99999999.999')
|| '/'
|| TO_CHAR (NVL (a.BYTES / 1024 / 1024, 0), '99999999.999') "Used (M)",
TO_CHAR (NVL (t.BYTES / a.BYTES * 100, 0), '990.00') "Used %"
FROM SYS.dba_tablespaces d,
(SELECT tablespace_name, SUM (BYTES) BYTES
FROM dba_temp_files
GROUP BY tablespace_name) a,
(SELECT tablespace_name, SUM (bytes_cached) BYTES
FROM v$temp_extent_pool
GROUP BY tablespace_name) t
WHERE d.tablespace_name = a.tablespace_name(+)
AND d.tablespace_name = t.tablespace_name(+)
AND d.extent_management LIKE 'LOCAL'
AND d.CONTENTS LIKE 'TEMPORARY'
-- 收缩临时表空间
alter tablespace tbs_mk_temp coalse;
3.查询某个用户下表 占用的空间select t.segment_name,sum(t.bytes)/1024/1024
from user_segments t
where segment_name like 'TB%'
group by t.segment_name
order by sum(t.bytes)/1024/1024 desc
4.查询表是否是分区表 ，占用的大小
select *
from user_segments t
where segment_name like 'TB%'
and t.segment_name='TB_FI_FIG_WINNER_CUST_MON'
5.查询 被锁的进程(dba登录)
select sess.sid,sess.serial#, lo.oracle_username,lo.os_user_name,ao.object_name, sess.LOGON_TIME,lo.locked_mode
from v$locked_object lo,dba_objects ao,v$session sess
where ao.object_id = lo.object_id
and lo.session_id = sess.sid
order by sess.LOGON_TIME;
6. 杀掉被锁的进程
alter system kill session '1997,33097';
