登陆oracle em 登陆不了截图如下： 

更改用户密码无效：

查看后台log:

2015-06-27 10:11:31,640 Thread-1080228448 WARN  collector: Error exit. Error message: ORA-28001: the password has expired

可能是密码过期导致：

查看过期用户：

SQL> alter user sysman identified by geelykpi;

User altered.

 解封即可正常登陆！！

关闭oracle11g的过期策略：

一：

SQL> select username,profile from dba_users where username='SYSTEM';

USERNAME         PROFILE
------------------------------ ------------------------------
SYSTEM          DEFAULT

SQL> SELECT * FROM dba_profiles s WHERE s.profile='DEFAULT' AND resource_name='PASSWORD_LIFE_TIME';

PROFILE          RESOURCE_NAME   RESOURCE
------------------------------ -------------------------------- --------
LIMIT
----------------------------------------
DEFAULT          PASSWORD_LIFE_TIME  PASSWORD
180

SQL> ALTER PROFILE DEFAULT LIMIT PASSWORD_LIFE_TIME UNLIMITED;

Profile altered.

成功！！！