Re: Source for tim=nnnnn in 10046 trace
- From: De DBA <dedba@xxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx, yong321@xxxxxxxxx
- Date: Tue, 27 Aug 2013 11:47:03 +1000
the 4 hours time difference also occurs in the UTC-5 zone (New York, Detroit,
Miami) when Daylight Savings Time is in force.
Cheers,
Tony
On 27/08/13 00:54, Yong Huang wrote:
> One addition to what I posted earlier (shown below). The derived_sysdate in
> the query is 1969-12-31 19:59:59, i.e. 8pm instead of 23:59:59 of that night
> (or 12am of 1970-01-01). The 4 hour difference may be due to different
> timezones. According to
> http://www.timeanddate.com/worldclock/converted.html?iso700101T00&p1=0&p29&p3#&p4(3&p5(6
>
> 8pm of 1969-12-31 at UTC epoch is the time for the timezone where Nova
> Scotia, Canada is. I'm not sure why.
>
> Yong Huang
>
> My previous message:
>
>
> You just need to change your sysdate to 2013-08-23 15:24:25.823. For example:
>
> SQL> with x as (select 1377285865823053 as t, (1377285865823053/1e6) as t1
> from dual)
> 2 select t tim_micro, t1 tim_sec, '2013-08-23 15:24:25' curr_sysdate,
> to_date('2013-08-23 15:24:25','yyyy-mm-dd hh24:mi:ss')-(t1/86400)
> 3 derived_sysdate
> 4 from x;
>
> TIM_MICRO TIM_SEC CURR_SYSDATE DERIVED_SYSDATE
> -------------------- -------------------- -------------------
> -------------------
> 1377285865823053 1377285865.823053 2013-08-23 15:24:25 1969-12-31
> 19:59:59
>
> The derived sysdate is the epoch.
> --
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>
>
>
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