RE: Duplicate timestamp(6): How is this possible?

  • From: "Dunbar, Norman (Capgemini)" <norman.dunbar.capgemini@xxxxxxxxxxxxxxxxxxxxxxxxx>
  • To: <michaeljmoore@xxxxxxxxx>, "Stephane Faroult" <sfaroult@xxxxxxxxxxxx>
  • Date: Thu, 20 Jan 2011 08:42:51 -0000

Morning Michael,

>> I believe I may have figured this out. I am using 
>> current_timestamp. I believe that for a given moment in 
>> time, this value could be different depending on the 
>> location of the user. 'believe' because I'm not really sure. 

Current_timestamp is the "session" timestamp (actually, TIMESTAMP WITH
TIME ZONE) and as such can be duplicated due to the same time being hit
in two different timezones.


>> I think that if I change the default to SYSTIMESTAMP, the 
>> local server timestamp will be populated. 

It will, regardless of where the users are located. SYSTIMESTAMP is
always the database server time. Unless you get really "lucky" you
shouldn't have duplicates. SYSTIMESTAMP is also a TIMESTAMP WITH TIME
ZONE.



Cheers,
Norm.

Norman Dunbar
Contract Senior Oracle DBA
Capgemini Database Team (EA)
Internal : 7 28 2051
External : 0113 231 2051


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