oracle表空间剩余查询,oracle 查看各表空间剩余量

剩余查询,oracle 查看各表空间剩余量"/>

oracle表空间剩余查询,oracle 查看各表空间剩余量

1、查看所有表空间大小、剩余量：

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)

2、查看当前用户各表所占表空间

Select Segment_Name,Sum(bytes)/1024/1024 From User_Extents Group By Segment_Name