一：
–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
二：
–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;
三：增加表空间大小
alter database datafile ‘表空间位置’ resize 新的尺寸
alter database datafile ‘D:\APP\ADMINISTRATOR\ORADATA\XYSHARE\SGSHARE.DBF’ resize 4096m
当然还有其余别的方法增加表空间大小。暂时 只接触这一种，以后会补上。
本文地址：https://blog.csdn.net/qq_41700208/article/details/110947380