Oracle server date format

Question

I've got a report made with Eclipse which builds a table with Strings and Dates through a SQL query, and running it locally it works fine, but when I bring it on my oracle server the day and month are switched, not visually, but just the data, let me do an example:

Dates generated locally on Eclipse (dd/mm/yy):

01/06/17 (1st jun)
31/12/17 (31st dec)

Same dates on report generated on server (dd/mm/yy):

06/01/17 (6th jan)
12/31/17 <- which shows the row retrieved by the query but leaves a blank space in the "my_date" column

Does anybody have an idea on why this happens? Thanks.

EDIT: these are my SESSION parameters, I can't change them right now but I'll keep you updated if that works out. Thanks!

Answer 1

Try changing the NLS_DATE_FORMAT . For example:

ALTER SESSION SET NLS_DATE_FORMAT='YYYY-MM-DD HH:MI:SS'

or:

ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY MM DD';

or whatever other format you like. Check the fine manual