Oracle, which also makes business software, said that the deal will extend its offerings of cloud businesses. It already offers cloud-based opportunities for sales, commerce, service, social and marketing activities.
Earlier this week, Redwood City-based Oracle reported that its fiscal second-quarter net income edged down slightly, hurt by flat revenue from new software licenses and cloud software subscriptions. The performance still beat Wall Street's view.
Under the deal announced Friday, Oracle will pay $27 per Responsys share, a 38 percent premium to the San Bruno company's Thursday closing price of $19.52.
Responsys' board unanimously approved the deal. The acquisition is targeted to close in the first half of next year.
Responsys currently has approximately 51.4 million outstanding shares, according to FactSet. The companies put the transaction's value at about $1.5 billion.
The companies will continue to operate independently until the buyout is complete.
Responsys shares climbed $7.38, or 38 percent, to $26.90 in morning trading Friday. Oracle's stock added 3 cents to $36.63.