1. 查表空间名字、大小、已用大小、未用大小、已用百分比、未用百分比select tablespace_name, sum(totalM), sum(usedM), sum(remainedM),
sum(usedM) / sum(totalM) * 100, sum(remainedM) / sum(totalM) * 100
from
(
select b.file_id, b.tablespace_name, b.file_name,
b.bytes / 1024 / 1024 totalM,
( b.bytes - sum( nvl( a.bytes, 0) ) ) / 1024 / 1024 usedM,
sum( nvl(a.bytes,0) ) / 1024 / 1024 remainedM,
sum( nvl(a.bytes,0) ) / (b.bytes) * 100 usedPer,
(100-sum( (nvl(a.bytes,0) ) / (b.bytes) * 100)) remainedPer
from dba_free_space a, dba_data_files b
where a.file_id = b.file_id
group by b.tablespace_name, b.file_name, b.file_id, b.bytes
order by b.tablespace_name
)
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