Oracle创建新用户授权

--创建一个usera用户
create user usera identified by abc;
--给用户授权，connect和resource角色，创建视图的权限
grant connect,resource,create view to usera;
--创建student表，
create table student(
s_id number,
s_name varchar2(20),
s_age number,
s_sex varchar2(6),
s_class varchar2(30)
);
--获取scott.student表的查询权限,使用scott账户执行
grant select on student to usera;

--通过scott.student表的查询结果，插入usera的student表
insert into student
select * from scott.student;