U.S. Stocks Climb as Oracle Deal Lifts  NEW YORK (Reuters) - U.S. stocks rose on Monday after  software maker 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; accepted rival 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; buyout offer and data showed  better-than-expected November retail sales, signaling an uptick  in consumer spending.