The tech giant warned of a security flaw that a cybercrime gang said it's exploiting as part of a mass-hacking campaign.

Oracle shares plunged after the tech giant said it expects to raise billions of dollars this fiscal year to fund its AI buildout. The news overshadowed record quarterly results and a record backlog.

Oracle Corp.’s bonds rallied on Thursday even as its shares tumbled, after the database giant calmed debt investors by saying ...