Oil Prices Seen Weighing on Wall Street  PARIS (Reuters) - Oil prices up toward \$45 a barrel are  likely to mar sentiment on Wall Street on Wednesday, but solid  earnings from software giant Oracle &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=ORCL.O target=/stocks/quickinfo/fullquote"&gt;ORCL.O&lt;/A&gt; looks set to  support the technology sector.