News: QUB Deals of the day- Mergers and acquisitions

Feb 23 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 1030 GMT on Tuesday:

** Business software maker Oracle Corp ORCL.N , which is seeking to expand its cloud business, has agreed to buy Israeli cloud software company Ravello Systems, the two firms said on their websites.

** Canada's Bank of Nova Scotia BNS.TO has approached a unit of Bank of China 601988.SS , Fubon Financial Holdings 2881.TW , Maybank MBBM.KL and Japanese lenders to gauge interest for its $1.7 billion stake in Thai lender Thanachart, people familiar with the matter said.

** Tech giant Samsung Electronics Co Ltd 005930.KS denied a report that it planned to sell its majority stake in medical equipment maker Samsung Medison Co Ltd, saying it was groundless.

** Consortiums led by Canada's Brookfield Asset Management Inc BAMa.TO and Australia's Qube Holdings (QUB) are considering joining forces to bid for Asciano Ltd (AIO) , the Australian port and rail giant said.

** Japan's top oil refiner JX Nippon Oil & Energy Corp 5020.T will buy a roughly 10 percent stake in the Vietnam National Petroleum Group, the Nikkei business daily reported, although the two companies said nothing had been decided.

** Swiss Re SRENH.VX is open to doing mergers and acquisitions in areas away from its core reinsurance business, the group's chief financial officer said on Tuesday.