Oracle PL/SQL Tutorial/SQL PLUS Session Environment/nls date format
alter session set nls_date_format="dd-mm-yyyy", nls_language=Dutch, nls_currency="Eur"
<source lang="sql">
SQL> alter session
2 set nls_date_format="dd-mm-yyyy" 3 nls_language=Dutch 4 nls_currency="Eur";
Session altered. SQL> SQL></source>
alter session set nls_date_format = "SYYYYMMDD HH24MISS";
<source lang="sql">
SQL> SQL> SQL> alter session set nls_date_format = "SYYYYMMDD HH24MISS"; Session altered. SQL> SQL></source>