关于Oracle创建表空间和用户

select * from Dba_Tablespaces;

create temporary tablespace opus_temp  
tempfile 'E:\Oracle\oradata\opus\opus_temp.dbf' 
size 50m  
autoextend on  
next 50m maxsize 20480m  
extent management local;

create tablespace opus_data  
logging  
datafile 'E:\Oracle\oradata\opus\opus_data.dbf' 
size 50m  
autoextend on  
next 50m maxsize 20480m  
extent management local;

create user opus identified by opus 
default tablespace opus_data  
temporary tablespace opus_temp;

grant connect,resource,dba to opus;

drop user root;

alter user opus identified by opus;

alter user opus account unlock;