TOKYO, July 9 : The benchmark 10-year Japanese Government Bond (JGB) yield hit a 30-year high on Thursday, as rising oil prices rekindled inflation concerns and investors remained wary of Japan's fiscal health.Here are a few details: • The 10-year JGB yield rose 1.5 basis points (bps) to 2.880 per cent, the highest since September 1996. Yields move inversely to bond prices.• The two-year yield, the one most sensitive to Bank of Japan policy rates, increased 1 bp to 1.44 per cent. The five-year yield also rose 1 bp to 1.995 per cent. • Oil prices jumped after U.S. President Donald Trump said he thought a tentative deal to end the war with Iran was over, pushing U.S. Treasury yields to a multi-week high.• The finance ministry is set to auction about 2.5 trillion yen ($15.38 billion) of 5-yea