--查詢表空間使用情況
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 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 1
--查詢表空間的free space
select tablespace_name, count(*) as extends,round(sum(bytes) / 1024 / 1024, 2) as mb,sum(blocks) as blocks from dba_free_space group by tablespace_name;
--查詢表空間的總容量
select tablespace_name, sum(bytes) / 1024 / 1024 as mb from dba_data_files group by tablespace_name;
--查詢表空間使用率
select total.tablespace_name,
round(total.mb, 2) as total_mb,
round(total.mb - free.mb, 2) as used_mb,
round(( 1 - free.mb / total.mb ) * 100, 2)
|| '%' as used_pct
from (select tablespace_name,
sum(bytes) / 1024 / 1024 as mb
from dba_free_space
group by tablespace_name) free,
(select tablespace_name,
sum(bytes) / 1024 / 1024 as mb
from dba_data_files
group by tablespace_name) total
where free.tablespace_name = total.tablespace_name;
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