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RE: Selecting TZD, TZR for timezones

From: <Joel.Patterson_at_crowley.com>
Date: Wed, 10 Jan 2007 08:26:17 -0500
Message-ID: <02C2FA1C9961934BB6D16DE35707B27B027636B8@jax-mbh-01.jax.crowley.com>

NLS_TIMESTAMP_TZ_FORMAT 08:02:37 PEGADMIN @ pegrept> select * from v$timezone_file;

FILENAME VERSION
------------ ----------

timezlrg.dat 2

1 row selected.

Elapsed: 00:00:00.09
08:06:24 PEGADMIN @ pegrept> create table t (dt date, ts1 timestamp with time zone, ts2 timestamp with local time zone) 08:18:25 2 /

Table created.

Elapsed: 00:00:00.95
08:19:29 PEGADMIN @ pegrept> l
  1 insert int t (dt, ts1, ts2) values
  2 ( timestamp'2005-06-05 17:02:32.212 US/Pacific',   3 timestamp'2005-06-05 17:02:32.212 US/Pacific',   4* timestamp'2005-06-05 17:02:32.212 US/Pacific')

08:19:32 PEGADMIN  @ pegrept> insert into t (dt, ts1, ts2) values
08:19:41   2  ( timestamp'2005-06-05 17:02:32.212 US/Pacific',
08:19:43   3  timestamp'2005-06-05 17:02:32.212 US/Pacific',
08:19:43   4   timestamp'2005-06-05 17:02:32.212 US/Pacific');

1 row created.

Elapsed: 00:00:00.03
08:19:45 PEGADMIN @ pegrept> commit;

Commit complete.

Elapsed: 00:00:00.01
08:19:50 PEGADMIN @ pegrept> select dbtimezone from dual;

DBTIME



-05:00

1 row selected.

Elapsed: 00:00:00.00
08:20:09 PEGADMIN @ pegrept> select * from t;

DT TS1
TS2



08:24:15 PEGADMIN @ pegrept> select * from t;

DT TS1
TS2



1 row selected.

Elapsed: 00:00:00.01
08:24:19 PEGADMIN @ pegrept> alter session set NLS_TIMESTAMP_TZ_FORMAT = 'DD-MON-RR HH.MI.SSXFF AM TZM'; Session altered.

Elapsed: 00:00:00.01
08:24:48 PEGADMIN @ pegrept> select * from t;

DT TS1
TS2



1 row selected.

Elapsed: 00:00:00.01
08:24:51 PEGADMIN @ pegrept> alter session set NLS_TIMESTAMP_TZ_FORMAT = 'DD-MON-RR HH.MI.SSXFF AM TZR'
08:24:59 2 ;

Session altered.

Elapsed: 00:00:00.01
08:25:00 PEGADMIN @ pegrept> select * from t;

DT TS1
TS2



Joel Patterson
Database Administrator
joel.patterson_at_crowley.com
x72546
904 727-2546

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Donahue, Adam Sent: Tuesday, January 09, 2007 5:13 PM
To: oracle-l_at_freelists.org
Subject: Selecting TZD, TZR for timezones

Folks,

Is it possible to select the textual mapping of the current time zone when the session (or database) time zone setting itself is numeric, e.g.,

                SQL> select systimestamp from dual;

                SYSTIMESTAMP         



---

                09-JAN-07 05.10.41.719683 PM -05:00                 SQL> select to_char( systimestamp, 'TZR' ) from dual;

		TO_CHAR(SYSTIMESTAMP,'TZR')
		--------------------------------
		-05:00

is not what we want. We want 'US/Eastern' returned from the second prompt - the problem, I'm suspecting, is that there's no way to map from
-05:00 back to US/Eastern reliably without other details, and Oracle
doesn't have though details. Whereas I can supply a date and the time zone in text which Oracle and convert to the right offset.

Is this possible?

Adam

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http://www.freelists.org/webpage/oracle-l Received on Wed Jan 10 2007 - 07:26:17 CST

Original text of this message

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