The rise in stock price had a simple explanation as was reported after the earnings call this week...
"Meanwhile, Oracle’s earnings benefited from a whopping $10 billion worth of stock buybacks during the quarter. The company’s fiscal year earnings are expected to ride on massive share buybacks. The company’s board has permitted additional spending of $12 billion on share buybacks, which would boost the company’s earnings in fiscal 2019."
If you want to invest based on that, go for it! Otherwise, the big names in Cloud are showing stock gains based off of growth numbers that dwarf what Oracle is showing -- without any massive buybacks needed.