The Sensex at the Bombay Stock Exchange rallied 330 points, or 2 percent, to again cross the 17,000 mark, and close at 17,194, on fresh buying by investors, amid rising Asian and European markets, today. The Nifty at the National Stock Exchange rose 112 points, or 2.2 percent, to 5,199. Stock markets in Japan, China, Hong Kong, South Korea and Singapore gained between 0.1 percent and 1 percent.