檢視表空間資訊SQL集合

1、檢視表空間的名稱及大小

select  t.tablespace_name as

"表空間名", 
round(sum(bytes / (1024
*1024)), 0) as
"所佔物理空間m"
from
dba_tablespaces t, dba_data_files d 
where t.tablespace_name =
d.tablespace_name 
group
by t.tablespace_name;

2.檢視表空間物理檔案的名稱及大小

select tablespace_name as

"表空間名", 
file_id
as"資料檔案序號", 
file_name
as"資料檔案所在位置", 
round(bytes / (1024
*1024), 0) as
"所佔物理空間(m)"
from
dba_data_files 
order
by tablespace_name;

3.查詢表空間的使用情況

1）以m為單位

select

upper
(f.tablespace_name) "表空間名",
d.tot_grootte_mb "表空間大小(m)",
d.tot_grootte_mb 
-f.total_bytes "已使用空間(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 "空閒空間(m)",
f.max_bytes "最大塊(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
bytablespace_name) f,
(select
dd.tablespace_name,
round(sum(dd.bytes) / (1024
*1024), 2
) tot_grootte_mb
from
sys.dba_data_files dd
group
bydd.tablespace_name) d
where d.tablespace_name =
f.tablespace_name
order
by1;

2）以g為單位

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
bytablespace_name) a, 
(select tablespace_name, sum
(bytes) total 
from
dba_data_files 
group
bytablespace_name) b 
where a.tablespace_name = b.tablespace_name

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