Oracle Corp. sold $18 billion US investment-grade bonds on Wednesday, the market’s second-largest deal this year, as the software maker ramps up its spending to meet the needs of the artificial intelligence boom. Demand peaked at nearly$88 billion, according to a person with knowledge of the matter. Most Read from Bloomberg The technology giant — which has nearly doubled in value this year — is issuing debt in six parts, including a rare 40-year bond, people familiar with the matter said, asking not to ...