Oracle查看用户、用户权限、角色

一、查看所有用户

SELECT * FROM DBA_USERS;
SELECT * FROM ALL_USERS;
SELECT * FROM USER_USERS;

二、查看用户系统权限

SELECT * FROM DBA_SYS_PRIVS;
SELECT * FROM USER_SYS_PRIVS;

三、查看用户对象或角色权限

SELECT * FROM DBA_TAB_PRIVS;
SELECT * FROM ALL_TAB_PRIVS;
SELECT * FROM USER_TAB_PRIVS;

四、查看所有角色

SELECT * FROM DBA_ROLES;

 五、查看用户或角色所拥有的角色

SELECT * FROM DBA_ROLE_PRIVS;
SELECT * FROM USER_ROLE_PRIVS;