oracle表空间查询

--修改表空间为自动增长修改语句

alter database datafile '文件路径' autoextend on;

alter database datafile '文件路径' autoextend on;

alter database datafile '/oracle/oip/aaa.dbf' autoextend on;

SELECT tablespace_name,FILE_NAME,TABLESPACE_NAME,AUTOEXTENSIBLE FROM dba_data_files;

--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) total_space

FROM dba_data_files

ORDER BY tablespace_name;

--6、查看表空间的使用情况

SELECT SUM(bytes) / (1024 * 1024) AS free_space, tablespace_name

FROM dba_free_space

GROUP BY tablespace_name;

SELECT a.tablespace_name,

a.bytes total,

b.bytes used,

c.bytes free,

(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;

--1G=1024MB

--1M=1024KB

--1K=1024Bytes

--1M=11048576Bytes

--1G=1024*11048576Bytes=11313741824Bytes

SELECT a.tablespace_name "表空间名",

total "表空间大小",

free "表空间剩余大小",

(total - free) "表空间使用大小",

total / (1024 * 1024 * 1024) "表空间大小(G)",

free / (1024 * 1024 * 1024) "表空间剩余大小(G)",

(total - free) / (1024 * 1024 * 1024) "表空间使用大小(G)",

round((total - free) / total, 4) * 100 "使用率 %"

FROM (SELECT tablespace_name, SUM(bytes) free

FROM dba_free_space

GROUP BY tablespace_name) a,

(SELECT tablespace_name, SUM(bytes) total

FROM dba_data_files

GROUP BY tablespace_name) b

WHERE a.tablespace_name = b.tablespace_name