Oracle has bought open-source database technology developer Innobase for an undisclosed sum

Innobase, based in Helsinki, Finland, is the creator of InnoDB, an add-on storage engine for MySQL. InnoDB is distributed under the GNU GPL open-source license. The software is bundled with MySQL though a contractual agreement that comes up for renewal next year; Oracle said it expects to negotiate an extension of that contract.

"Oracle intends to continue developing the InnoDB technology and expand our commitment to open source software," said Charles Rozwat, Oracle's database and middleware VP. "Oracle has already developed and contributed an open source clustered file system to Linux. We expect to make additional contributions in the future."

Oracle has made a dozen acquisitions in the past year, including, multi-billion-dollar PeopleSoft and Siebel buys. Other recent purchases include supply-chain logistics software maker Global Logistics, retail optimisation software ProfitLogic, database performance enhancement technology maker TimesTen and a majority stake in Indian banking software vendor i-flex Solutions.