Oracle Buys PeopleSoft for \$10.3 Billion  SAN FRANCISCO (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  Monday agreed to a sweetened \$10.3 billion buyout by rival  software maker 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;, relenting after a  18-month takeover saga marked by personal insults, courtroom  battles and the ouster of PeopleSoft's chief executive.