摘要： select df.tablespace_name "表空间名",totalspace "总空间M",freespace "剩余空间M",round((1-freespace/totalspace)*100,2) "使用率%",(totalspace-freespace)/1024 "已用空间G"from (select tablespace_name,round(sum(bytes)/1024/1024) totalspace from dba_data_files group by tabl 阅读全文