Business software maker Oracle Corp. on Wednesday announced new software designed to sift through corporate networks, a major push into the red-hot search market dominated by Google Inc. .

Oracle's Secure Enterprise Search is a program aimed at helping businesses and organizations quickly scour databases, e-mail systems and other corporate software for information.

Oracle chief executive Larry Ellison unveiled the software in Tokyo, saying it is aimed at filling a gap left by Google, which dominates online searches and has pushed into individual computers with its desktop search software.

"What Google does not do well is search private data. It searches public data very well, the World Wide Web. But most data we deal with is not public data, it's private data, personal data," Ellison said.

Illustrating the growing importance of the search market, Ellison described the software as "one of our biggest products in years."

Companies such as top software company Microsoft Corp. and Yahoo Inc. have also been rolling out new and updated search products as they try to chip away at Google's dominance.

Oracle's software would have security measures built in to ensure users can only access data they are authorized to view, Ellison said.

The search tool will be available by the end of May, Oracle said. No pricing for the product was disclosed.