Follow the steps below:
1, check the user's proifle is which, is generally default:
Sql>select username,profile from Dba_users;
2. View the password expiration settings for the specified profile (such as default):
Sql>select * from Dba_profiles s WHERE s.profile= ' DEFAULT ' and resource_name= ' password_life_time ';
3. Change the password validity period from the default of 180 days to "unlimited":
Sql>alter profile DEFAULT LIMIT password_life_time UNLIMITED;
You do not need to restart the database after you modify it, it takes effect immediately.
4, after the modification, has not been prompted ORA-28002 warning account will not encounter the same prompt;
The account that has been prompted must change the password again, for example:
$sqlplus/as SYSDBA
sql> alter user SMSC identified by < original password >----do not change the new password
oracle11g startup parameter Resource_limit whether it is set to False or true, the password validity period is valid and must be modified in the above manner. The account name above is changed according to the account name you are actually using.
Oracle user password expiration and user lock resolution