Not getting all of the results from ALL_OBJECTS in Procedure

Question

I created the following procedure under a DBA account. The procedure selects info from ALL_OBJECTS. When I execute the procedure under this same DBA account, It does not return objects of all owners; only owners like SYSTEM, SYS, PUBLIC, and the DBA account itself.
But if I run the same code anonymously in SQLplus, under the same DBA account, I get objects of all the other owners that I also have access to.
What do I need to do in order to have the procedure return objects of all the other owners?
Here's the procedure:
CREATE OR REPLACE procedure xxx
IS
CURSOR C1 IS
select distinct owner
from all_objects
     order by owner;
OwnName VARCHAR2(30);
BEGIN
OPEN C1;
LOOP
fetch c1 into OwnName;
EXIT WHEN C1%NOTFOUND;
dbms_output.put_line ('Owner ' || OwnName);
END LOOP;
dbms_output.put_line ('Procedure xxx Ended');
CLOSE C1;
EXCEPTION
WHEN OTHERS THEN
IF C1%ISOPEN THEN CLOSE C1; END IF;
DBMS_OUTPUT.PUT_LINE (CHR(0));
DBMS_OUTPUT.PUT_LINE ('OwnName: '||OwnName);
DBMS_OUTPUT.PUT_LINE ('SQL Code: '||TO_CHAR(SQLCode));
DBMS_OUTPUT.PUT_LINE ('Error Message: '||SUBSTR(SQLERRM, 1, 200));
END;
Thank you.

Answer 1

When you execute the code from within a procedure, instead of within an anonymous pl/sql block, it only applies the privileges that have been granted directly and does not apply any of the privileges that have been granted through roles. If you "set role none", then execute your anonymous pl/sql block, you will see the same limited result set that you are getting from the procedure.