Oracle資料庫檢視表空間sql語句

1、oracle檢視表空間當前使用者

select 

username,default_tablespace 
from user_users;

select 

table_name,tablespace_name 
from user_tables 
where table_name = 'test_table'

select 

a.tablespace_name "表空間名",
total "表空間大小",
free "表空間剩餘大小",
( total - free ) "表空間使用大小",
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

select 

a.tablespace_name "表空間名", 
total "表空間大小", 
free "表空間剩餘大小", 
(total - free) "表空間使用大小", 
total / (1024 * 1024 * 1024) "表空間大小(g)", 
free / (1024 * 1024 * 1024) "表空間剩餘大小(g)", 
(total - free) / (1024 * 1024 * 1024) "表空間使用大小(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;

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