ORA-01031 when trying to connect as sysdba. sqlplus works

[Baras, Gal]

Hello,
 
I'm getting an ORA-01031 error when trying to use the ORA_SYSDBA or
ORA_SYSOPER modes.
 
When using sqlplus, I can use '/ as sysdba' and '/ as sysoper' as the same
UNIX user(s).
 
This is on HP-UX 11i, Oracle 9.20, perl 5.8.0, DBI 1.37 and DBD::Oracle
1.14.
 
Thanks,
Gal