select * from user_sys_privs;

create user lisi identified by 123456 //創建用戶
grant create session to lisi //授予擁有會話的權限
grant create table to lisi //授予創建表的權限
grant create unlimited tablespace to lisi //授予無空間限制的權限
revoke create session from lisi //撤銷權限
revoke create table from lisi
revoke create unlimited tablespace from lisi

select * from user_tab_privs;

grant select on tab to wangwu //對表tab的查詢條件授予給wangwu用戶
grant all on tab to wangwu //對表tab的所有操作授予給wangwu用戶
revoke select on tab from wangwu
revoke all on tab from wangwu

grant ceate any table to lisi with admin option; //李四用戶可以將此權限傳遞給其它用戶

grant select on tabA to lisi with grant option;

create(drop) role myrole
grant create session to myrole
grant create table to myrole
grant myrole to lisi