参考https://www.cnblogs.com/hfjiang/p/10129634.html
1.创建角色
CREATE ROLE SELECT_ROLE
2.给角色分配权限
grant CREATE VIEW to SELECT_ROLE;
grant CREATE SYNONYM to SELECT_ROLE;
grant CONNECT TO SELECT_ROLE;
grant SELECT ANY DICTIONARY to SELECT_ROLE;
grant SELECT ANY TABLE to SELECT_ROLE;
grant SELECT ANY TRANSACTION to SELECT_ROLE;
grant SELECT ANY SEQUENCE to SELECT_ROLE;
3.把角色赋予指定账户
CREATE USER user IDENTIFIED BY user DEFAULT TABLESPACE xxx;
grant SELECT_ROLE to user;
4.删除角色
drop role SELECT_ROLE;
5.检查角色的权限
select * from dba_sys_privs where grantee='SELECT_ROLE'
测试权限的时候需要加上用户的对象例如
select count(*) from hr.ex_user;
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