Terms were not disclosed. The deal is expected to close before the end of 2011.
Endeca reportedly had raised about $70 million in venture capital; in July it said revenues were running at about $150 million a year.
Update: Nomura analyst Rick Sherlund estimates that Oracle is likely paying 5-6x sales, which would be $750 million to $900 million. "We view this as a good purchase for Oracle as it gives them a product to manage ‘unstructured’ data," he writes in a research note. "Overall, we like the acquisition and think it fits well with Oracle’s existing portfolio."