Sql代码
create user username identified by password; 创建用户
grant dba to username; 权限
drop user username cascade; 删除用户
CREATE TABLESPACE 表空间名 DATAFILE C:\Oracle\product\\oradata\orcl\备份文件dbf SIZE G ON NEXT M MAXSIZE UNLIMITED 数据导入创建表空间
drop tablespace 表空间名 including contents and datafiles; 删除表空间