Is there any impact on database if we change the time of server?

Hi,
Our DB server time is 45 minutes ahead of our application server. We have planned to reset the time of database server. Is there any impact on database if we change the timing of the server?
Platform: Solaris
DB version: 10.2.0.2.0
$ bash
bash-3.00$ date
Thu Apr 23 20:26:19 IST 2009
bash-3.00$ sqlplus /nolog
SQL*Plus: Release 10.2.0.2.0 - Production on Thu Apr 23 20:27:15 2009
Copyright (c) 1982, 2005, Oracle. All Rights Reserved.
SQL> conn /as sysdba
Connected.
SQL> select sysdate from dual;
SYSDATE
23-APR-09
SQL> select systimestamp from dual;
SYSTIMESTAMP
23-APR-09 08.27.53.250947 PM +05:30

That's an application question, not an Oracle question.
Oracle doesn't care what time it is or when the time changes. Your application(s), however, may care. If you use SYSDATE to populate a row and rely on the date later to be unique or to indicate the actual order rows were inserted, changing the date on the server, particular moving it backwards, might cause problems for your application. Does your application have problems running during daylight savings time changes?
Justin

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