During the upcoming retrial of Oracle's corporate-theft lawsuit against SAP, the companies plan to call a star-studded array of tech executives as witnesses including CEO Larry Ellison, former Oracle co-president and current Infor CEO Charles Phillips and SAP co-CEO Bill McDermott, according to court documents filed Thursday.

A company that has been providing third-party support for Oracle's JD Edwards ERP (enterprise resource planning) software is undergoing a significant expansion of its efforts, despite the ongoing cloud of litigation over the market.

Epicor is trying to stop Utah IT services firm Applied Integration from providing third-party support for its Dimensions software, alleging that the company has committed illegal acts in the course of doing so, according to a lawsuit filed this month in U.S. District Court for the Western District of Texas.

Oracle is alleging that two companies violated its intellectual property as part of a "gray market" conspiracy to provide support for Oracle's Sun Solaris OS and hardware, according to a lawsuit filed last week in U.S. District Court for the Northern District of California.

Oracle's plan to drag its legal fight against rival SAP's defunct TomorrowNow subsidiary through a second trial is not surprising, analysts said Tuesday.

The ongoing lawsuit between Oracle and third-party support provider Rimini Street has heated up further, with new allegations that Oracle is "abusing" the pre-trial discovery process and using "scare tactics" against customers in order to hurt Rimini Street's business.

A federal jury has ordered SAP to pay Versata Software damages of $US345 million in connection with a patent infringement lawsuit.

SAP wants a judge to reduce the $US1.3 billion award a jury granted Oracle last year in its intellectual property-theft lawsuit to no more than $408.7 million, and also asked for a new trial, according to filings made late Wednesday in U.S. District Court for the Northern District of California.