Is there a Bug in Oracle 9.2.0.1

Question

Dear all,
I would like to have a solution for the following error.
When I fire a select statement on table containing three date column fields.
Statement is like this
select staffno,to_date(fromdt,'DD-MON-YYYY'),to_date(todt,'DD-MON-YYYY'),to_date(newdt,'DD-MON-YYYY')
from forpost
where staffno = 1222122
All dates from,to,new are defined as DATE in table forpost
Error report is
ORA-01841 full year must be between -4713 and +9999 and not be 0
I would like to have help on this. Is that there is a bug in 9.2.0.1
Regards
Shivacal

Answer 1

all remarks above are correct, you should never do a to_date(date)
what is your nls_date_format?
I could imagine :
SQL> create table t as select trunc(sysdate) d from dual;
Table created.
SQL> select d from t;
D
15.12.2006
SQL> alter session set nls_date_format='DD-MON-MISS';
Session altered.
SQL> select d from t;
D
15-DEC-0000
SQL> select to_date(d,'DD-MON-YYYY') from t;
select to_date(d,'DD-MON-YYYY') from t
ERROR at line 1:
ORA-01841: (full) year must be between -4713 and +9999, and not be 0which is of course not a bug