统计数据库各用户占用空间情况

按用户统计表占用情况

SELECT t.owner, trunc(SUM(db_size),3) db_size_M FROM(
  select owner,table_name, 
  NUM_ROWS,
  BLOCKS*(select to_number(p.VALUE) from v$parameter p where p.NAME = 'db_block_size')/1024/1024 db_size, 
  EMPTY_BLOCKS, 
  LAST_ANALYZED 
  from dba_tables t
  order by BLOCKS desc 
)t
group by t.owner
order by db_size_M desc;

  统计表占用

 

select owner,
       table_name,
       NUM_ROWS,
       BLOCKS * (select to_number(p.VALUE) from v$parameter p  where p.NAME = 'db_block_size') / 1024 / 1024 db_size,
       EMPTY_BLOCKS,
       LAST_ANALYZED
  from dba_tables t
 order by t.owner, T.BLOCKS desc

 

select table_name,blocks*8192/1024/1024 size_m from user_tables where blocks is not null order by size_m desc