Ku qor sii wadida cutubkan - Ciyaaraha Olombikada xagaaga ee 2012 ee London, Oliveira wuxuu ku tartamay isla dhacdooyinka shaqsiyadeed oo kaliya laba maalmood oo u dhexeeya. Wuxuu gaadhay heerka FINA B ee 1:59.72 (200 m dhabarka) laga soo bilaabo Horyaalka Yurub
Debrecen, Hungary, iyo 1:58.50 (200 m balastar) oo ka socota Universiade xagaaga ee Shenzhen, Shiinaha. Tartankiisii ugu horreeyay, 200 m balastar, Oliveira wuxuu kaalinta labaatanaad ka galay horudhaca subaxnimada. Waxa uu ka gudbay dhamaan ciyaartoyda oo dhan si uu u hogaamiyo heerka labaad ee heerka ugu wanaagsan ee dharka ee 1: 58.45. Laba maalmood ka dib, 200 m dhabarka, Oliveira wuxuu la tartamay toddobo dabaasha kale oo isku heer ah, oo ay ku jiraan Gábor Balog oo reer Hungary ah, oo ku soo dhamaaday finalka tartanka Yurub. Wuxuu dhigay rikoor cusub oo reer Portugal ah 1:58.83 si uu u helo kaalinta labaad ee ka dambeysa Balog. Oliveira ayaa seegay 16-ka qeyb-dhamaadka ugu sarreeya lix-tobankii labaad (0.60), maadaama uu kaalinta labaatanaad galay horudhaca.