oracle 賬號管理

  1、用戶創建/刪除

創建

SQL> create user web_hgz identified by admin123;

User created.

SQL> col username format a10;  --col為column縮寫，format a10指定格式寬度為10個字符

SQL> col account_status format a15;

SQL> select username, account_status, lock_date, expiry_date from dba_users where username = 'web_hgz';

USERNAME   ACCOUNT_STATUS  LOCK_DATE           EXPIRY_DATE

---------- --------------- ------------------- -------------------

web_hgz         OPEN

刪除

SQL> drop user“name”cascade;

  2、修改用戶密碼

SQL> alter user HR identified by admin123;

修改前：

SQL> select username,account_status,lock_date, expiry_date from dba_users where username ='HR';

USERNAME   ACCOUNT_STATUS  LOCK_DATE EXPIRY_DA
---------- --------------- --------- ---------
HR         EXPIRED                   29-NOV-15

修改后：

SQL> select username,account_status,lock_date, expiry_date from dba_users where username ='HR';

USERNAME                       ACCOUNT_STATUS                   LOCK_DATE
------------------------------ -------------------------------- ---------
EXPIRY_DA
---------
HR                             OPEN

  3、 解除用戶鎖定

SQL> alter user hr account unlock;

User altered.

SQL> select a.username, a.account_status, a.lock_date from dba_users a where a.username = 'HR';

USERNAME   ACCOUNT_STATUS                    LOCK_DATE

---------- -------------------------------- -------------------

HR         OPEN

  4、oracle用戶登陸失敗次數限制修改

a.查詢密碼連續輸入出錯的最大次數，超過該值則鎖定該帳號：

SQL> select * from dba_profiles s where s.profile='DEFAULT' and resource_name='FAILED_LOGIN_ATTEMPTS';         //FAILED_LOGIN_ATTEMPTS表示出錯最大次數

b.修改登陸失敗限制次數 

SQL>alter profile default limit failed_login_attempts unlimited;  //表示不受限

SQL>alter profile default limit failed_login_attempts 3;   //表示限制次數為3次

顯示效果：
[oracle@localhost ~]$ sqlplus hr/admin123

ERROR:
ORA-28000: the account is locked

  5、賦予用戶表空間權限

SQL>alter user ittbank default tablespace ittbank;

  6、授予用戶管理權限：

grant connect,resource,dba to ittbank ;

  7、查看當前用戶的角色

select * from user_role_privs;
select * from session_privs;

  8、查看當前用戶的系統權限和表級權限

select * from user_sys_privs;
select * from user_tab_privs;

  9、查詢用戶表

select name from dba_users;

  10、顯示當前用戶

show user;