Snapping its three-day long losing streak, the Bombay Stock Exchange benchmark Sensex recovered by over 64 points to regain the 20,000 level in the opening trade today. Recovery in oil and gas, consumer durables and auto sector stocks, helped the Sensex trade in the positive zone shrugging-off disappointing second quarter earnings by some corporate. The wide-based National Stock Exchange index Nifty recovered by 34 points to 6,022 points.