oracle数据库查看表空间的例子。
直接sql/plus运行:
复制代码 代码示例:
select dbf.tablespace_name,
dbf.totalspace "总量(M)",
dbf.totalblocks as 总块数,
dfs.freespace "剩余总量(M)",
dfs.freeblocks "剩余块数",
(dfs.freespace / dbf.totalspace) * 100 "空闲比例"
from (select t.tablespace_name,
sum(t.bytes) / 1024 / 1024 totalspace,
sum(t.blocks) totalblocks
from dba_data_files t
group by t.tablespace_name) dbf,
(select tt.tablespace_name,
sum(tt.bytes) / 1024 / 1024 freespace,
sum(tt.blocks) freeblocks
from dba_free_space tt
group by tt.tablespace_name) dfs
where trim(dbf.tablespace_name) = trim(dfs.tablespace_name)
查询结果:
TABLESPACE_NAME 总量(M) 总块数 剩余总量(M) 剩余块数 空闲比例
----------------- ---------- ---------- ----------- ---------- ----------
UNDOTBS1 30 3840 20.6875 2648 68.9583333
SYSAUX 260 33280 12.5625 1608 4.83173076
USERS 5 640 1.4375 184 28.75
SYSTEM 480 61440 3.75 480 0.78125
EXAMPLE 100 12800 22.3125 2856 22.3125
