Re: Anyway to tell jdbc to use server timezone?

From: George Woodring <george(dot)woodring(at)iglass(dot)net>
To: Mikko Tiihonen <Mikko(dot)Tiihonen(at)nitorcreations(dot)com>
Cc: Dave Cramer <pg(at)fastcrypt(dot)com>, List <pgsql-jdbc(at)postgresql(dot)org>
Subject: Re: Anyway to tell jdbc to use server timezone?
Date: 2014-11-14 13:31:55
Message-ID: CACi+J=T0-p86ZGJnf3K7K7GjP3AwkbKepoxzL6jAmKz2ZamSDQ@mail.gmail.com
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I have 100 different customers with different timezones, I was trying to
avoid having to put a lookup table to say if I am connecting to foo set the
timezone to bar. GMT was just the example in the email.

Thanks,
George

iGLASS Networks
www.iglass.net

On Fri, Nov 14, 2014 at 3:07 AM, Mikko Tiihonen <
Mikko(dot)Tiihonen(at)nitorcreations(dot)com> wrote:

> Would an acceptable workaround for you to change the Java default
> timezone.
>
> Either start the JVM with -Duser.timezone=GMT
>
> or to invoke in your startup code TimeZone.setDefault(TimeZone.get("GMT"));
>
>
> -Mikko
> ------------------------------
> *From:* pgsql-jdbc-owner(at)postgresql(dot)org <pgsql-jdbc-owner(at)postgresql(dot)org>
> on behalf of Dave Cramer <pg(at)fastcrypt(dot)com>
> *Sent:* 13 November 2014 16:27
> *To:* George Woodring
> *Cc:* List
> *Subject:* Re: [JDBC] Anyway to tell jdbc to use server timezone?
>
> Ah, OK, this was done for binary protocol. I seem to recall this is
> somewhat defined in the spec according to setTimestamp.
>
> Is there a reason why you can't just override this in your code when you
> get a connection ?
>
>
>
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
> On 13 November 2014 08:31, George Woodring <george(dot)woodring(at)iglass(dot)net>
> wrote:
>
>> It is not the where case that is my issue. It is that the jdbc driver is
>> changing my timezone from what I set with alter database to the timezone of
>> my web server for any queries from the web server. What I would like is a
>> way to keep the database timezone setting.
>>
>> When I log into my database with psql and show timezone I get "GMT",
>> when I put a log into my java code and show timezone I get "US/Eastern".
>> This is causing my data not to line up correctly around DST boundries,
>> since the data was save at 12, 2, 4am GMT and it is trying to find data at
>> 12, 2, 4am Eastern which is 12, 1, 3 am GMT
>>
>> Thanks
>> George
>>
>> iGLASS Networks
>> www.iglass.net
>>
>> On Wed, Nov 12, 2014 at 1:59 PM, Dave Cramer <pg(at)fastcrypt(dot)com> wrote:
>>
>>> George,
>>>
>>> I looked at the stackoverflow example. I fail to see how the driver
>>> would change the where clause.
>>>
>>> Can you create a self contained test case ?
>>>
>>> Dave Cramer
>>>
>>> dave.cramer(at)credativ(dot)ca
>>> http://www.credativ.ca
>>>
>>> On 12 November 2014 13:48, George Woodring <george(dot)woodring(at)iglass(dot)net>
>>> wrote:
>>>
>>>> I originally asked a question about adjusting timezone per db back
>>>>
>>>> 1B1B254441DB31448BD34C5BD73B0B8B2904B1(at)PHOENIX(dot)istructure(dot)com
>>>> <http://www.postgresql.org/message-id/1B1B254441DB31448BD34C5BD73B0B8B2904B1@PHOENIX.istructure.com>
>>>>
>>>>
>>>> And it was suggested that I set them per db, which I have. But now
>>>> moving to
>>>> 9.3 of the jdbc driver, it seems to set the timezone to the web
>>>> server's timezone.
>>>>
>>>> I have found mentions
>>>>
>>>> CAAXGW-y==FOGGB7jVWhDsaugXV20qeXUcgZSiteQ7jfMXOKi-A(at)mail(dot)gmail(dot)com
>>>> <http://www.postgresql.org/message-id/CAAXGW-y==FOGGB7jVWhDsaugXV20qeXUcgZSiteQ7jfMXOKi-A@mail.gmail.com>
>>>>
>>>>
>>>> and
>>>>
>>>>
>>>> http://stackoverflow.com/questions/18447995/postgresql-9-2-jdbc-driver-uses-client-time-zone
>>>>
>>>> My question here is is there a way to disable it and get the older
>>>> functionality? Is there a command I could run after I get the connection
>>>> to say "set timezone = 'server default'"?
>>>>
>>>> Thanks
>>>> George Woodring
>>>> iGLASS Networks
>>>> www.iglass.net
>>>>
>>>
>>>
>>
>

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