DBA_USERS showing null values in PASSWORD column

Hi,
We are running a select query from dba_users table as follows :
select username from dba_users
where to_char(expiry_date, 'DD-MON-YY') =
to_char(sysdate + &expire_day, 'DD-MON-YY')
and password not in ('EXTERNAL','account-locked')
and account_status <> 'LOCKED';
This query was running fine with 10g Version, but after Oracle was upgraded to 11G recently, above query does not return any rows.
Also, when we remove the condition "and password not in ('EXTERNAL','account-locked')", it works.
And the values for the PASSWORD column shows null.
Is this related to Oracle upgrade ?
Kindly help..
Thanks,
Jatin

I have the same behavior in my 11g db (I have nulls in password column too) as checking docs:
[url http://download.oracle.com/docs/cd/E11882_01/server.112/e24448/statviews_5081.htm#REFRN23302]Oracle® Database Reference 11g Release 2 (11.2) - DBA_USERS
I can see:
USER_USERS describes the current user. This view does not display the PASSWORD, PROFILE, PASSWORD_VERSIONS, EDITIONS_ENABLED, or AUTHENTICATION_TYPE columns....
PASSWORD VARCHAR2(30) This column is deprecated in favor of the AUTHENTICATION_TYPE columnIt seems you need to get this info from somewhere else.
Edited by: Kecskemethy on Oct 3, 2011 2:36 AM

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