Eloqua makes software to help businesses predict and grow revenue by monitoring marketing and sales initiatives. Its customers include AON Plc, Dow Jones, Automatic Data Processing Inc, Polycom Inc and National Instruments Corp.

Oracle, which came late to cloud computing, is trying to be a one-stop shop for operating systems, databases, computer programs and infrastructure over the Web.

"The acquisition of Eloqua will add a leading market automation solution to Oracle's strong salesforce automation products and the recently acquired RightNow call center automation solution," Nomura Equity Research analysts said in a research note.

Oracle bought RightNow Technologies last year for $1.5 billion, sparking several more acquisitions in the cloud-computing market including IBM Inc's acquisition of Kenexa and SAP AG's purchase of SuccessFactors.

Oracle, which has traditionally offered installed software products, then bought Taleo, a cloud-based HR software firm.

"We would expect Oracle to continue to make acquisitions in this space, to bolster its Fusion Applications suite and respond to competitive pressure in the applications market from SAP and Salesforce.co," Nomura said.

Oracle priced the deal at $871 million, net of Eloqua's cash. Based on the 34.5 million Eloqua shares outstanding as of October 31, the equity portion of the deal came to $810 million.

Cloud computing, a broad term referring to the delivery of services via the Internet from remote data centers, is a favorite with corporate technology buyers because it is faster to implement and has lower upfront costs than traditional software.

Oracle Chief Executive Larry Ellison mocked cloud computing in 2008 as "complete gibberish". He described it as a fad, comparing the computer industry to the fashion world.

But Oracle has since introduced its own web products and acquired several firms selling internet-based software as its corporate customers embraced web services offered by Salesforce.com Inc, Amazon.com Inc and Google Inc.

"Although Oracle already had strong marketing functionality, this gives it a cloud offering to deliver and an additional base of midmarket customers providing a recurring license maintenance stream," Nucleus Research analyst Rebecca Wettemann said.

The company's $23.50 per share offer for Eloqua represents a 31 percent premium to Eloqua's Nasdaq close on Wednesday.

Eloqua shares jumped to match the offer price while Oracle's shares were flat at $34.05 on the Nasdaq.

"Eloqua's leading marketing automation cloud will become the centerpiece of the Oracle Marketing Cloud," said Thomas Kurian, Executive Vice President of Oracle Development.

Eloqua's board has unanimously approved the deal, which is expected to close in the first half of 2013.

Oracle said on Tuesday that software sales growth will stay strong into the new year despite fears that there could be big tax hikes and U.S. government spending cuts that could cause a slump in spending by customers.

(Editing by Don Sebastian and Rodney Joyce)

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