MySQL open source database author Michael Widenius has filed an appeal against the decision by European competition authorities to approve Oracle’s $7.4bn acquisition of Sun Microsystems.
The European Commission said it would defend the decision in court, although at the time it did not know the grounds for the appeal, according to the Financial Times.
Concerns over the future of MySQL as a potential competitor to Oracle’s core database product delayed approval of the deal for several months last year.
The European Commission (EC) investigated claims by opponents to the deal, including Michael Widenius, that Oracle could have an incentive to suppress or restructure MySQL.
The deal was finally approved in January after Oracle published a 10-point list of commitments to reassure the EC that MySQL would remain a competitive force in the database market.
These included a commitment to the continued availability of storage engine APIs and increased spending on MySQL research and development.
But, according to Widenius, Oracle’s commitments are not legally binding and unlikely to be worth anything.
Widenius said he would not make any further statements about the appeal until Oracle has made a public response.