Here is my problem:

node1:
select * from v$pwfile_users;
USERNAME SYSDBA SYSOPER
-------- ------ -------
SYS      TRUE   TRUE

node2:
select * from v$pwfile_users;
USERNAME SYSDBA SYSOPER
-------- ------ -------
SYS      TRUE   TRUE

from node1:
ALTER USER "pwtest" IDENTIFIED BY "PWTEST";
user altered
grant sysdba to pwtest;
grant succeeded
sqlplus /nolog
SQL>
SQL>connect pwtest/pwtest@drac1 as sysdba
connected.
SQL>select * from v$pwfile_users;

USERNAME                       SYSDB SYSOP
------------------------------ ----- -----
SYS                            TRUE  TRUE
PWTEST                         TRUE  TRUE
SQL>
node 1 is all fine.

--now connect to node 2.
SQL>sqlplus /nolog
connect pwtest/pwtest@drac2 as sysdba
ERROR:
ORA-01031: insufficient privileges

Warning: You are no longer connected to ORACLE.

When I login as sys in node 2 and do select * from v$pwfile_users
"pwtest" user doesn't exist there.  So obviously the change didn't go
through in node2.  I have to use the old password (non sysdba user) to
successfully login.
SO how do I alter sysdba privileged user on RAC?

Oracle EE 9.2.0.4 (two node RAC) on Linux RH 2.1 Advanced server
Thanks,
SP