Why doesn't the "grant execute any procedure" work?

Question

Hi to all.
I want to grant the execute privilege for all SYS schema functions/procedures. To achieve it I do the following:
SQL> connect sys/*****@orcl
Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as SYS
SQL> create user test identified by test;
User created
SQL> grant create session to test;
Grant succeeded
SQL> grant execute any procedure to test;
Grant succeeded
According to the [http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_9013.htm] the "grant execute any procedure" - grants Execute procedures or functions, either standalone or packaged.
So, the steps seem to be right. Then, I try to connect to the test user and execute any procedure from the SYS schema, for example, dbms_lock.sleep:
SQL> connect test/test@dizzy/orcl
Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as test
SQL> begin
2 sys.dbms_lock.sleep(1);
3 end;
4 /
begin
sys.dbms_lock.sleep(1);
end;
ORA-06550: line 3, column 1:
PLS-00201: identifier 'SYS.DBMS_LOCK' must be declared
ORA-06550: line 3, column 1:
PL/SQL: Statement ignored
So, the execution fails due to insufficient rights. However, the direct grant on the sys.dbms_lock works!
SQL> connect sys/*****@dizzy/orcl as sysdba
Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as SYS
SQL> grant execute on dbms_lock; to test;
grant execute on dbms_lock; to test
ORA-00911: invalid character
SQL> grant execute on dbms_lock to test;
Grant succeeded
SQL> connect test/test@dizzy/orcl
Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as test
SQL> begin
2 sys.dbms_lock.sleep(1);
3 end;
4 /
PL/SQL procedure successfully completed
So, to be sure that the grant on any procedure from the definite scheme is given, should I avoid giving the execute any procedure grant?
P.S. Is there any special tag for code?
Thanks in advance.

Answer 1

Sybrand, thank you for the reply.
You are right. I tried to connect by another user NOT SYS and created the function:
SQL> create user testic identified by i;
User created
SQL> grant create session, execute any procedure to testic;
Grant succeeded
SQL> create or replace function get1 return number is
  2  begin
  3  return 1;
  4  end;
  5  /
Function created
SQL> connect testic/i@orcl
Connected to Oracle Database 10g Enterprise Edition Release 10.2.0.4.0
Connected as testic
SQL> select get1 from dual;
select get1 from dual
ORA-00904: "GET1": invalid identifier
SQL> select kaisa_rgali.get1 from dual;
      GET1
         1Thank you for the tag. This's exactly what I asked about.
Finally, I tried t open the hyperlink http://download.oracle.com/docgs/cd/B10501_01/server.920/a96521/privs.htm but it failed.