Oracle 查看表空间的大小及使用情况sql语句

 
--1、查看表空间的名称及大小 
SELECT t.tablespace_name, round(SUM(bytes / (1024 * 1024)), 0) ts_size 
FROMdba_tablespaces t, dba_data_files d 
WHERE t.tablespace_name =d.tablespace_name 
GROUP BYt.tablespace_name; 
--2、查看表空间物理文件的名称及大小 
SELECTtablespace_name, 
file_id, 
file_name, 
round(bytes / (1024 * 1024), 0) total_space 
FROMdba_data_files 
ORDER BYtablespace_name; 
--3、查看回滚段名称及大小 
SELECTsegment_name, 
tablespace_name, 
r.status, 
(initial_extent / 1024) initialextent, 
(next_extent / 1024) nextextent, 
max_extents, 
v.curext curextent 
FROMdba_rollback_segs r, v$rollstat v 
WHERE r.segment_id = v.usn(+) 
ORDER BYsegment_name; 
--4、查看控制文件 
SELECT NAME FROMv$controlfile; 
--5、查看日志文件 
SELECT MEMBER FROMv$logfile; 
--6、查看表空间的使用情况 
SELECT SUM(bytes) / (1024 * 1024) ASfree_space, tablespace_name 
FROMdba_free_space 
GROUP BYtablespace_name; 
SELECTa.tablespace_name, 
a.bytes total, 
b.bytes used, 
c.bytes free, 
(b.bytes * 100) / a.bytes "%USED ", 
(c.bytes * 100) / a.bytes "%FREE " 
FROMsys.sm$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; 
--7、查看数据库库对象 
SELECT owner, object_type, status, COUNT(*) count# 
FROMall_objects 
GROUP BYowner, object_type, status; 
--8、查看数据库的版本　 
SELECTversion 
FROMproduct_component_version 
WHERE substr(product, 1, 6) = 'Oracle'; 
--9、查看数据库的创建日期和归档方式 
SELECT created, log_mode, log_mode FROM v$database;