I have two DB's on Two Different servers

server1 :
values current date
09/03/2007

insert into session.DateTable values DATE ('09/22/2007'); -- works fine

server 2:
values current date
03/09/2007

insert into session.DateTable values DATE ('09/22/2007'); --fails
and i have to change it to
insert into session.DateTable values DATE ('22/09/2007');

why the default format are different when the DB's have same codeset and territory code ??
..........db2 dates always confuses me......

it depends on the bind of the db2cli.lst and db2ubind.lst
the client that did the first bind defined the format

Best practice is to use the ISO format on an insert or update, which is always recognized by DB2 (note the dashes):

'2007-09-22'