Tha same result after the third run ?

Question

Hi everybody,
I have table with about 500 000 records. I typed followed SELECT and I receive the same result only after the third run (immediate after start of database). How is this possible?
SELECT DISTINCT
id_subject,
name AS subject_name,
id_state,
scale
FROM table1
WHERE id_state = 16
ORDER BY scale;
Table table1 contains something like that:
id_subject name id_state scale
1 first 16 8
1 first 16 8
2 second 16 8
2 second 16 8
3 third 16 7
3 third 16 7
4 four 5 7
There are another columns in the table1 which contain no duplicate data.
When I type
ALTER SYSTEM FLUSH SHARED_POOL
the situation repeats.
Regards
Matus

Answer 1

Hi,
these are examples of results:
The first
id_subject name id_state scale
506496 B-KONTAKT 31 11
505627 APS 31 11
514006 Kasaloq 31 11
518615 ROSTEQ 31 11
508037 POPCO 31 11
The second
id_subject name id_state scale
506422 ARCADE 31 11
505697 TVAR 31 11
514206 LITES 31 11
518715 SANELA 31 11
528037 AZP 31 11
OS MS Windows Vista Version 6.0.6000, and also MS Windows Server 2000
Oracle 10.2.0.3.0
client PL/SQL Developer.
but the same behaviour I have on the machine:
OS MS Windows Server 2000
Oracle 10.2.0.1.0
client PL/SQL Developer.
Regards,
Matus