Oil is slightly up in the Asian markets owing to rise in buying.In Singapore, the light sweet crude oil for March Delivery is up by 18 cents to $71.37 cents a barrel.Brent North Sea deals rose by 25 cents to $69.84 per barrel. Fall in Euro and prevailing bearish trend in stock markets resulted into rise in oil prices.However, the price of an oil barrel is still $71 in the market.