Oracle to MongoDB is removing one day from dates

Five Stars

Oracle to MongoDB is removing one day from dates

I am actually using the mongDB API via a tLibraryLoad component, as I find this easier to build complex multi-level documents using tJavaRow and tJava components, than using the MongoDB palette components.
I am reading in data from Oracle which are date values with a zero time stamp component:
29-JUN-08 00.00.00

The records in mongo shell appear to be the previous day.  You can see the record is inserted as the 28-JUN-2008.

 "status_date" : ISODate("2008-06-28T23:00:00Z")

It is almost as if mongoDB sees a midnight date as the end of the previous day, rather than the start of the 29th June 2008.
In my schema I have specified the Oracle columns as Date and DB Type of Date.
I expect this is related to UTC.  However I am not sure where the UTC offset is being introduced.  I am running the job locally on my PC which is UTC+00 (UK).  In Oracle I am storing the date as a "date" and not a "timezone with timestamp" so am not even storing the timezone in the database.  
All I want is the stored date to be captured in mongoDB as captured in Oracle....
Any advice appreciated.

Carpe Diem

Re: Oracle to MongoDB is removing one day from dates

Hi Stephen,
Could you please also indicate the build version you are using?
Best regards
Don't forget to give kudos when a reply is helpful and click Accept the solution when you think you're good with it.
Five Stars

Re: Oracle to MongoDB is removing one day from dates

Is this what you require?
I believe this is to do with Daylight Saving Time.   MongoDB is looking at the raw time from Oracle, and then adjusting due to DST for some reason....If I change my locale settings in Windows to US, then the changes to the dates adjust as to when they kick in - in accordance with DST in the US.
Talend Unified Platform feature Talend.

Carpe Diem
One Star

Re: Oracle to MongoDB is removing one day from dates

Any update or answers here?

Cloud Free Trial

Try Talend Cloud free for 30 days.


Introduction to Talend Open Studio for Data Integration.

Definitive Guide to Data Integration

Practical steps to developing your data integration strategy.

Definitive Guide to Data Quality

Create systems and workflow to manage clean data ingestion and data transformation.