The database vendor's forthcoming Fusion suite is scheduled to replace all its existing products by 2008. Support for the current versions was initially scheduled to cease by 2013.
But Oracle has extended these deadlines as part of its 'Applications Unlimited' programme, and promised customers more information on future product roadmaps.
"With today's announcement, we are giving customers the best of both worlds: more value from existing applications, which we plan to enhance indefinitely, and an option to upgrade free-of-charge to future technologies, if customers have a business case to do so," said Oracle president Charles Phillips.
By promising to continue to enhance the existing suites, Oracle claims to be removing the need for customers to upgrade. Large enterprises with offices spread out over the world could feel rushed by the 2013 date.
Rival enterprise software maker SAP has used the pending upgrade to lure Oracle users through a special programme that promises rebates and credits to defecting customers.
Oracle claims a total of 30,000 companies using its enterprise applications.
IBM and Technical University of Munich team demonstrate how Shor's algorithm, which can't be cracked by conventional computers, can be solved quickly with quantum computing
Hubble Space Telescope finds superflares from young red dwarfs could strip away planetary atmosphere
Younger stars are 100 to 1,000 times more energetic than when they're older
Two of the big four supermarkets will use the system to control sales of restricted products
PUBG news and updates: November's Update #23 to bring new Skorpion pistol and changes to blue zone visibility
Genuinely useful side-arm coming to PUBG in Update #23