UPPER Indexes cause select ERROR!

Question

I downloaded Oracle 10g and installed it on a windows 2003 server. When I created UPPER indexes on a table, and the table has many rows, SELECT statement failed.
for example:
DROP TABLE TestTab;
CREATE     TABLE     TestTab(
     id          NUMBER(9)     DEFAULT 1 NULL,
     name          VARCHAR2(32)     NULL,
     address          VARCHAR2(64)     NULL,
     PRIMARY     KEY     (id)
DROP INDEX TestTab_01;
CREATE     INDEX     TestTab_01 ON TestTab(UPPER(name));
DROP INDEX TestTab_02;
CREATE     INDEX     TestTab_02 ON TestTab(UPPER(address));
create or replace procedure ADDDATA
IS
lCount     NUMBER;
BEGIN
lCount := 1;
LOOP
INSERT INTO TESTTAB VALUES(lCount, TO_CHAR(lCount, '00000'), TO_CHAR(lCount, '00000'));
lCount := lCount + 1;
IF lCount >= 80000 THEN
EXIT;
END IF;
END LOOP;
COMMIT;
EXCEPTION
WHEN OTHERS THEN
ROLLBACK;
RAISE;
END;
EXEC ADDDATA;
SELECT COUNT(*) FROM TestTab;
SELECT id FROM TestTab WHERE (UPPER(name) = ' 00100' OR UPPER(name) = ' 00101' OR UPPER(name) = ' 00102'
OR UPPER(address) = ' 00105' OR UPPER(address) = ' 00106') ORDER BY id;
ID
100
101
102
SELECT id FROM TestTab WHERE (UPPER(address) = ' 00105' OR UPPER(address) = ' 00106' OR UPPER(name) = ' 00100' OR UPPER(name) = ' 00101' OR UPPER(name) = ' 00102') ORDER BY id;
ID
105
106
It looks like that the first index could be used and the second index couldn't be used and indexes caused select errors.

Answer 1

indexes caused select errors. Which errors ? I did exactly what you posted, and these are the results :
TEST@db102 SQL> SELECT id FROM TestTab WHERE (UPPER(name) = ' 00100' OR UPPER(name) = ' 00101' OR UPPER(name) = ' 00102'
OR UPPER(address) = ' 00105' OR UPPER(address) = ' 00106') ORDER BY id;  2
             ID
            100
            101
            102
            105
            106
TEST@db102 SQL> SELECT id FROM TestTab WHERE (UPPER(address) = ' 00105' OR UPPER(address) = ' 00106' OR UPPER(name) = ' 00100'
OR UPPER(name) = ' 00101' OR UPPER(name) = ' 00102') ORDER BY id;
             ID
            100
            101
            102
            105
            106
TEST@db102 SQL> select count(*) from testtab;
       COUNT(*)
          79999
TEST@db102 SQL>