PeopleSoft Execs Defend Program  WILMINGTON, Del. (Reuters) - PeopleSoft Inc.'s &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=PSFT.O target=/stocks/quickinfo/fullquote"&gt;PSFT.O&lt;/A&gt;  chief financial officer on Wednesday said the company's  controversial customer assurance program, now being challenged  in court, might not force liabilities on Oracle Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ORCL.O target=/stocks/quickinfo/fullquote"&gt;ORCL.O&lt;/A&gt;  if its \$7.7 billion takeover bid succeeds.