Configure default for sorting of null-values?

Hi,

From the docs I see that you can control null values being sorted
before or after all non-null-values using 'NULLS LAST' or 'NULLS
FIRST' in the order by clause.

The default behaviour is to act as though nulls are larger than non-nulls.

My question is, is there a way to configure this default, at
connection level or at server level?

Thanks,

Rob