Problem with the Timezone settings

Question

hi We are having a database in the timezone 'Australia/Melbourne' and after the daylight saving is enabled, below are my findings on the server:
SQL> SELECT SESSIONTIMEZONE FROM DUAL;
SESSIONTIMEZONE
+11:00
SQL> select tz_offset(dbtimezone) from dual;
TZ_OFFS
+10:00
SQL> select to_char(sysdate,'DD/MM/YYYY HH24:MI:SS') from dual;
TO_CHAR(SYSDATE,'DD
07/10/2010 22:22:11
SQL> select
to_char(sysdate, 'DD/MM/YYYY HH24:MI:SS') as australia_timestamp,
to_char(from_tz(cast (sysdate as timestamp), 'Australia/Melbourne') at time zone 'UTC', 'DD/MM/YYYY HH24:MI:SS') as utc_timestamp
from dual;
2 3 4
AUSTRALIA_TIMESTAMP UTC_TIMESTAMP
07/10/2010 22:22:22 07/10/2010 12:22:22
SQL> !date
Thu Oct 7 22:22:55 EST 2010
I checked the clock for this for UTC: at http://www.timeanddate.com/worldclock/ and it was: Thursday, 7 October 2010 at 11:24:21
My question here is when the diff in the timezones timings is 11:00 hours and even the server time and the sysdate show the same, then why the above queries are returning diff results?
Is it related to some setting which is wrong or there is something to be modified in the query itself?

Answer 1

I'd start with the following document, with one modification. At step 12 after typing GEARAspiWDM press the Enter/Return key once prior to clicking OK. (Pressing Return adds a carriage return in the field and is important.)
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