People gather prior to keynote speech at the All Things Oracle OpenWorld Summit in San FranciscoVia Aurindom Mukherjee (Reuters) – Oracle Corp, the world’s No. 2 business software maker, stated it will buy web-based advertising instrument maker Responsys Inc for roughly $1.39 billion to bolster its cloud computing offerings. Oracle, led by means of billionaire Larry Ellison, has been specializing in cloud software to fend off competitors from nimbler competitors comparable to Salesforce.com and Workday Inc, which offer net-based merchandise at prices that steadily undercut Oracle. …