Oracle如何扩展表空间

–查看表空间的名字及文件所在位置
select tablespace_name,
file_id,
file_name,
round(bytes / (1024 * 1024), 0) total_space
from sys.dba_data_files
order by tablespace_name

查询表空间信息

select username,default_tablespace,t.* from dba_users t order by t.username asc

查询当前表空间下使用情况
select a.tablespace_name,
a.bytes / 1024 / 1024 “sum MB”,
(a.bytes - b.bytes) / 1024 / 1024 “used MB”,
b.bytes / 1024 / 1024 “free MB”,
round(((a.bytes - b.bytes) / a.bytes) * 100, 2) “used%”
from (select tablespace_name, sum(bytes) bytes
from dba_data_files
group by tablespace_name) a,
(select tablespace_name, sum(bytes) bytes, max(bytes) largest
from dba_free_space
group by tablespace_name) b
where a.tablespace_name = b.tablespace_name
order by ((a.bytes - b.bytes) / a.bytes) desc;

扩展表空间不足的字段
alter database datafile ‘表空间位置’ resize 新的尺寸
alter database datafile ‘+DATA/orcl/datafile/users.5817.980416093’ resize 4096m