oracle 账号管理

1、用户创建

 

SQL> create user web_hgz identified by admin123;

User created.

SQL> col username format a10;  --col为column缩写，format a10指定格式宽度为10个字符

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

 

2、修改用户密码

 

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、 解除用户锁定

 

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用户登陆失败次数限制修改

 

a.查询密码连续输入出错的最大次数，超过该值则锁定该帐号：

SQL> select * from dba_profiles s where s.profile='DEFAULT' and resource_name='FAILED_LOGIN_ATTEMPTS';         //FAILED_LOGIN_ATTEMPTS表示出错最大次数

 

b.修改登陆失败限制次数 

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

SQL>alter profile default limit failed_login_attempts 3;   //表示限制次数为3次

 

显示效果：

[oracle@localhost ~]$ sqlplus hr/admin123

ERROR:

ORA-28000: the account is locked

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