PeopleSoft Fires CEO Who Battled Oracle  NEW YORK (Reuters) - PeopleSoft Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=PSFT.O target=/stocks/quickinfo/fullquote"&gt;PSFT.O&lt;/A&gt; on Friday  said its board had ousted President and Chief Executive Craig  Conway, who has been the chief opponent of Oracle Corp.'s  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ORCL.O target=/stocks/quickinfo/fullquote"&gt;ORCL.O&lt;/A&gt; \$7.7 billion hostile bid to take over the software  company.