Meanwhile, Sun has decided to put the brakes on an effort to consolidate its database infrastructure into a single global ERP (enterprise resource planning) system.

Sun has "experienced a number of challenges" during the project that have affected operations, according to the filing.

"During the next six months, we have decided to delay the implementation of the remaining phases of the project while we evaluate alternatives," Sun said.

Spokeswomen for Sun and Oracle did not immediately respond to requests for comment.