ORRCLE查看表空间

1------------- 查看表空间和使用情况
SELECT a.tablespace_name, 
a.bytes/(1024*1024*1024)||'G' total_G,
b.bytes/(1024*1024*1024)||'G' used_G, 
c.bytes/(1024*1024*1024)||'G' free_G, 
(b.bytes * 100) / a.bytes "% USED ", 
(c.bytes * 100) / a.bytes "% FREE " 
FROM sys.sm$ts_avail a, sys.sm$ts_used b, sys.sm$ts_free c 
WHERE a.tablespace_name = b.tablespace_name 
AND a.tablespace_name = c.tablespace_name;

2---------------查看表空间物理文件的名称及大小

SELECT tablespace_name,
       file_id,
       file_name,
       round(bytes / (1024 * 1024), 0)||'M' total_space_M
  FROM dba_data_files
 ORDER BY tablespace_name;

--------------

--3、查看回滚段名称及大小 
SELECT segment_name, 
tablespace_name, 
r.status, 
(initial_extent / 1024) initialextent, 
(next_extent / 1024) nextextent, 
max_extents, 
v.curext curextent 
FROM dba_rollback_segs r, v$rollstat v 
WHERE r.segment_id = v.usn(+) 
ORDER BY segment_name; 

--4、查看控制文件 
SELECT NAME FROM v$controlfile; 

--5、查看日志文件 
SELECT MEMBER FROM v$logfile; 

--6、查看数据库库对象 
SELECT owner, object_type, status, COUNT(*) count#
  FROM all_objects
 GROUP BY owner, object_type, status;

--7、查看数据库的版本　 
SELECT version
  FROM product_component_version
 WHERE substr(product, 1, 6) = 'Oracle';

--8、查看数据库的创建日期和归档方式 
SELECT created, log_mode, log_mode FROM v$database;

--9 查看临时表空间
SELECT TABLESPACE_NAME, FREE_SPACE/1024/2014 AS "FREE SPACE(M)" FROM DBA_TEMP_FREE_SPACE
--10 清空临时表空间
alter tablespace TEST_TEMP shrink space;

-- 查看临时表数据信息

select c.tablespace_name,

to_char(c.bytes/1024/1024/1024,'99,999.999') total_gb,

to_char( (c.bytes-d.bytes_used)/1024/1024/1024,'99,999.999') free_gb,

to_char(d.bytes_used/1024/1024/1024,'99,999.999') use_gb,

to_char(d.bytes_used*100/c.bytes,'99.99') || '%'use

from  (select tablespace_name,sum(bytes) bytes

from dba_temp_files GROUP by tablespace_name) c,

(select tablespace_name,sum(bytes_cached) bytes_used

from v$temp_extent_pool GROUP by tablespace_name) d

where c.tablespace_name = d.tablespace_name;