删除用户
drop user ×× cascade
/*分为四步 */
/*第1步：创建临时表空间 */create temporary tablespace yuhang_temp
tempfile 'D:\oracledata\yuhang_temp.dbf'
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
/*第2步：创建数据表空间 */
create tablespace data1
logging
datafile 'F:\app\oracledata\yuhang_data.dbf'
size 50m
autoextend on
next 50m maxsize 20480m
extent management local;
/*第3步：创建用户并指定表空间 */
create user song identified by song
default tablespace data1
/*第4步：给用户授予权限 */
grant connect,resource,dba to song;