Oracle 表空间查看大小

 

--查看已有表空间：
select * from v$tablespace;

--查看表空间对应的数据文件:
select file_name, tablespace_name from dba_data_files;

---查看表空间大小
select a.tablespace_name,a.bytes/1024/1024 "sum MB",
(a.bytes-b.bytes)/1024/1024 "used MB",b.bytes/1024/1024 "free MB",
round (((a.bytes-b.bytes)/a.bytes)*100,2) "used%" from
(select tablespace_name,sum(bytes) bytes from dba_data_files group by tablespace_name) a,
(select tablespace_name,sum(bytes) bytes,max (bytes) largest from dba_free_space group by tablespace_name)b
where a.tablespace_name=b.tablespace_name
order by ((a.bytes-b.bytes)/a.bytes) desc;
--结束--

另一个:

--查表空间大小及使用--
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 "使用比(%)" desc;
--结束--

 

--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) total_space FROM dba_data_files ORDER BY tablespace_name;

--查看所有的表空间是否自动增长
SELECT FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE FROM dba_data_files;

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

--查看指定的表空间是否自动扩容
select tablespace_name,file_name,autoextensible from dba_data_files where tablespace_name = 'DEMO';