Cannot read from sys.v_$session

I have done the following as dbo:

grant select on sys.v_$session to dbo;
create or replace view z as select * from sys.v_$session ;

But the second command gives me:
ERROR at line 1:
ORA-00942: table or view does not exist

I can select directly from sys.v_$session by select * from sys.v_$session;

What do I have to do/grant permission wise to be able to create a view or PL/SQL function which accesses sys.v_$session?

Regards
Chris (chris_jack_at_msn.com) Received on Thu Jan 15 2004 - 16:59:34 CET