Not a bug, sqldev uses Tools -> Preferences... -> Database -NLS settings.
[Edit: This actually may well be a bug...]
SQL developer NLS preferences are also set to DUTCH and not used (otherwise to_char(sysdate) would not print in dutch).
(tried to include screendump jpg but forum says that image type is forbidden)
What is the sqldev NLS date language set to?
changing certain NLS settings in sqldev Tools -> Preferences... NLS requres a stop start of sqldev itself.
settings in sql developer are as nls_session_parameters in the original post.
NLS_DATE_LANGUAGE is DUTCH
Settings are like that since start (select to_char(sysdate) from dual; picks up settings without restart).
Can anyone else get sqldeveloper to have
select sysdate from dual;
use a different NLS_LANGUAGE setting than the original one?
Thanks a lot!!