The 30-share barometer spurted by 114.65 points, or 0.39 per cent, to trade at 29,434.91 with consumer durables, realty, auto, oil & gas and banking sector stocks, leading the rise.
The gauge had rallied by 1,092.84 points in previous six sessions.
Similarly, the National Stock Exchange index Nifty regained the 8,900-mark after three weeks by rising 32.60 points, or 0.36 per cent, to 8,901.70.
Sentiments remained upbeat as funds and retail investors indulged in enlarging positions on expectations that the forthcoming Budget may be growth-oriented, leading to acceleration in economic reforms by the government.
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Major gainers that supported the key indices were Cipla, Maruti Suzuki, Bharti Airtel, Hero Motocorp, M&M, Tata Motors, Sun Pharma, Infosys, HDFC Ltd, ONGC, TCS, Tata Steel, RIL and Hindustan Unilever.
Among other Asian markets, Japan's Nikkei gained 0.46 per cent in early trade today, while Hong Kong's market will remain closed today.
The US Dow Jones Industrial Average ended 0.10 per cent lower in yesterday's trade.
Meanwhile, domestic currency derivatives markets will remain closed today on account of 'Chhatrapati Shivaji Maharaj Jayanti'.