Oracle 查看表空间剩余与创建空间语法

select a.tablespace_name,total,free,total-free used from
( select tablespace_name,sum(bytes)/1024/1024 total from dba_data_files
group by tablespace_name) a,
( select tablespace_name,sum(bytes)/1024/1024 free from dba_free_space
group by tablespace_name) b
where a.tablespace_name=b.tablespace_name;

ALTER tablespace 空间名
ADD DATAFILE 'E:\app\Administrator\oradata\xxxx.ora'
SIZE 8g