CHAR(DATE(timestamp_expression), USA) will return ’mm/dd/yyyy’.
CHAR(DATE(timestamp_expression), EUR) will return ’dd.mm.yyyy’.
REPLACE(CHAR(DATE(timestamp_expression), EUR), '.', '/') will return ’dd/mm/yyyy’.
Please see "DB2 for i5/OS SQL Reference Version 5 Release 4" Chapter 3. Built-in functions.