--1、创建表空间
create tablespace MPAC_D_kuozhan datafile '/oracle/mms1/MPAC_D_kuozhan1.dbf' size 30G;
创建表空间,竟然耗时三个多小时。。。。。。。。。。。
--2、修改默认表空间
alter user aaa default tablespace MPAC_D_kuozhan;
--3、查看用户对应的表空间
select username, default_tablespace, temporary_tablespace from dba_users;
--4、查询表空间的总量、使用量、剩余量、使用率
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;