Create a new user in sql and grant permissions (only allowed to view certain tables)

//创建用户并设置用户名和密码
create user 用户名 identified by 密码;

//查看该用户的权限(一般是pulic,指所有权限都有)
Select grantee,granted_role from dba_role_privs where grantee='用户名';

//移除pulic权限
Revoke  public  from 用户名;

//赋予某个库.某个表select权限
grant select on 库名.表名 to 用户名;