Cant change any user password

[Husain]

Hi Erman,

I can able to change user password succesfull from root but , it seems nothing happen

for example;

[root@dataibmb01 ~]#passwd oracle
Changing password for user oracle.

You can now choose the new password or passphrase.

A good password should be a mix of upper and lower case letters,
digits, and other characters.  You can use a 5 character long
password.

A passphrase should be of at least 3 words, 5 to 40 characters
long and contain enough different characters.

Alternatively, if noone else can see your terminal now, you can
pick this as your password: "Taiwan:farce,pump".

Enter new password:    
Re-type new password:
passwd: all authentication tokens updated successfully.


I tried many mix combinations BTW.

[Husain]

with new password

su - oracle
Password:
su: incorrect password

[ErmanArslansOracleBlog]

Your account may be locked by PAM.

With root ->
First try to unlock the password of the user using  passwd -u <user>

If you can't do it, use pam_tally --user=<user> --reset    --again with root