date to timestamp with timezone and daylight saving going wrong

Hi all!

I have a table with date values.

I need to convert them to UTC.

I would like to use sys_extract_utc so I have to convert them to timestamp with time zone

This is where I have a problem:

While

select TO_CHAR(cast(to_date('01.07.2016 10:13','DD.MM.YYYY HH24:MI') as timestamp with time zone) at time zone 'Europe/Vienna', 'YYYY-MM-DD HH24:MI:SS TZR TZD') from dual;

-> 2016-07-01 10:13:00 EUROPE/VIENNA CEST

works fine

but this does not:

select TO_CHAR(cast(to_date('01.01.2016 10:13','DD.MM.YYYY HH24:MI') as timestamp with time zone) at time zone 'Europe/Vienna', 'YYYY-MM-DD HH24:MI:SS TZR TZD') from dual;