1.查詢使用者（資料）表空間
select upper(f.tablespace_name) "表空間名",
d.tot_grootte_mb "表空間大小(m)",
d.tot_grootte_mb - f.total_bytes "已使用空間(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 "空閒空間(m)",
f.max_bytes "最大塊(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.查詢臨時表空間
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$temp_extent_pool
group by tablespace_name) t
where d.tablespace_name = a.tablespace_name(+)
and d.tablespace_name = t.tablespace_name(+)
and d.extent_management like 'local'
and d.contents like 'temporary'
-- 收縮臨時表空間
alter tablespace tbs_mk_temp coalse;
3.查詢某個使用者下表 占用的空間
select t.segment_name,sum(t.bytes)/1024/1024
from user_segments t
where segment_name like 'tb%'
group by t.segment_name
order by sum(t.bytes)/1024/1024 desc
4.查詢表是否是分割槽表 ，占用的大小
select *
from user_segments t
where segment_name like 'tb%'
and t.segment_name='tb_fi_fig_winner_cust_mon'
5.查詢 被鎖的程序（dba登入）
select sess.sid,sess.serial#, lo.oracle_username,lo.os_user_name,ao.object_name, sess.logon_time,lo.locked_mode
from v$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. 殺掉被鎖的程序
alter system kill session '1997,33097';
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