Oracle Vows 'Oversupport' for PeopleSoft Customers  SAN FRANCISCO (Reuters) - Business software maker Oracle  Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=ORCL.O qtype=sym infotype=info qcat=news"&gt;ORCL.O&lt;/A&gt; on Tuesday promised to do everything it can to  keep PeopleSoft Inc.'s &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=PSFT.O qtype=sym infotype=info qcat=news"&gt;PSFT.O&lt;/A&gt; giant customer base, whose  departure could threaten the financial success of its proposed  \$9.2 billion takeover of PeopleSoft.