Alter time_zone
SQL> SQL> SQL> column sessiontimezone for a15 SQL> SQL> select sessiontimezone, current_date from dual; SESSIONTIMEZONE CURRENT_D --------------- --------- -07:00 16-JUN-08 1 row selected. SQL> SQL> alter session set time_zone = '-08:00'; Session altered. SQL> SQL> select sessiontimezone, current_date from dual; SESSIONTIMEZONE CURRENT_D --------------- --------- -08:00 16-JUN-08 1 row selected. SQL> SQL> --