create user test identified by test;

grant create session to test;

grant create table to test; 這個時候還沒有使用表空間的權限，還不可以建表
grant unlimited tablespace to test;
create table test (sno number);
create table scott.test(id int);
grant create any table to test;
conn scott/tiger;
select * from tab;
conn sys as sysdba;
select * from dba_sys_privs d where d.grantee=‘TEST‘; 查看test用戶的權限
create user test2 identified by test2;
grant create session to test2 with admin option; 後面選項的意思是可以把創建會話的權限繼續傳遞下去。
create user test3 identified by test3;
conn test2/test2;
grant create session to test3;
conn sys as sysdba;
revoke create session from test2;
conn test2/test2; 連接不上
conn test3/test3; 可以連接上

oracle 用戶系統權限