Aug 30 (Reuters) - Canada’s energy-heavy main stock index slipped on Monday as oil prices fell from a four-week high, while technology stocks tracked gains in the U.S. tech-heavy Nasdaq to an all-time high. At 9:33 a.m. ET (1333 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 24 points, or 0.12%, at 20,620.64, with the energy sector dropping 0.3%. (Reporting by Sagarika Jaisinghani in Bengaluru; Editing by Arun Koyyur) Our Standards: The Thomson Reuters Trust Principles.