The Commission said on Monday that a combination of Sun’s MySQL database product and Oracle’s products could hurt competition in the database market, Sun revealed in a filing with the US Securities and Exchange Commission.

Oracle said the Commission’s objection “reveals a profound misunderstanding” and that it “plans to vigorously oppose the Commission’s Statement of Objections”.

Oracle Chief Executive Larry Ellison recently said Sun is losing about $100 million a month because of uncertainty about its future, as European antitrust regulators pursue an in-depth investigation of the deal.