Different results from all_objects

Question

Can someone please explain me,
How it is possible to get different results from "all_objects", once I query it from "SQL Worksheet" and next time when I execute the procedure with the same query ?
The procedure is created by schema user (owner) and it's executed by it.
Same as the query.
I am querying for objects which belongs to other owners.
Is there a way how to trace which privileges are used for querying the "all_objects" ?
Any hint will be very welcomed ?

Answer 1

You are correct, sorry.
Oracle 11g EE 11.2.0.1.0 - 64bit Production on Windows 2K8
I already lost my whole day, probably I will lost the weekend, too.
Here is the sample code:
CREATE OR REPLACE PROCEDURE PROCEDURE1 AS
BEGIN
FOR c IN (SELECT object_name from all_objects d
WHERE d.owner IN ('DWH_CM')
LOOP
dbms_output.put_line(c.object_name);
end loop;
END PROCEDURE1;
Test
exec procedure1;
-- does not write anything in output and it is enabled
select object_name
from all_objects O
WHERE o.owner IN ('DWH_CM');
-- returns 99 rows
Edited by: user9377205 on Aug 6, 2010 9:06 AM