IBM Releases New Linux-Oriented Database Software  SAN FRANCISCO (Reuters) - International Business Machines  Corp. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=IBM.N qtype=sym infotype=info qcat=news"&gt;IBM.N&lt;/A&gt; late on Wednesday rolled out a new version of its  database software aimed at users of Linux and Unix operating  systems that it hopes will help the company take away market  share from market leader 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;.