Oracle Database Discussions

DB version: 11.2
OS : Solaris 10

We have a password verification function by which a password can be reused only after 50 different password changes.
But I want to disable this verification and re-use a password .

SCOTT user's profile is DEFAULT. I set DEFAULT profile's password verify function to NULL

select profile from dba_users where username = 'SCOTT';

PROFILE
------------------------------
DEFAULT

SQL> ALTER PROFILE DEFAULT LIMIT PASSWORD_VERIFY_FUNCTION NULL;

Profile altered.

SQL> select * from dba_profiles where resource_name='PASSWORD_VERIFY_FUNCTION';

PROFILE                        RESOURCE_NAME                    RESOURCE LIMIT
------------------------------ -------------------------------- -------- ----------
DEFAULT                        PASSWORD_VERIFY_FUNCTION         PASSWORD NULL


SQL> password SCOTT
Changing password for SCOTT
New password: 
Retype new password: 
ERROR:
ORA-28007: the password cannot be reused

I tried the below as well, but still getting ORA-28007 error

alter user scott identified by xxxx ;

Any idea why this is happening?