* Asian shares gain led by defensive plays
* Euro, sterling under pressure ahead of cen.bank meetings
* Oil, gold steady after recent slumps
By Rafael Nam
HONG KONG, Dec 4 (Reuters) - Asian shares rose for a second session on Thursday, though investors' willingness to take on risk was mainly limited to defensive plays, while the dollar and yen rose as central banks in the UK and Europe prepared to cut interest rates to their lowest in years.
The European Central Bank and the Bank of England on Thursday are expected to join central banks from Thailand to New Zealand in drastically reducing interest rates in response to a deep and potentially prolonged global economic downturn. [
]Oil prices fell below $46 a barrel to almost four-year lows as fears of deepening economic woes overshadowed bullish weekly U.S. oil stocks data, while gold was range-bound after slumping nearly 2 percent on Wednesday.
"Basically we're moving within a bear market, and given the trend towards a strong yen, people who want to buy stocks have no choice besides defensive shares," said Koichi Ogawa, chief portfolio manager at Daiwa SB Investments.
"There's not a lot of good news out there, not a lot of buying factors."
The MSCI index of Asia-Pacific stocks outside Japan <.MIAPJ0000PUS> rose 1.2 percent as of 0210 GMT, posting its second consecutive day of gains.
The MSCI index has advanced 13 percent since hitting a five-year low on Nov. 21, but is still down 59 percent for the year.
Investors turned to defensive or domestic demand-driven plays in Asia such as Japanese drug makers, which helped push Japan's Nikkei average <
> up 0.6 percent.Takeda Pharmaceutical <4502.T>, Japan's largest drugmakerm rose 0.7 percent, while Korea Electric Power Corp <015760.KS> gained 1.7 percent.
Defensive stocks lifted Wall Street on Wednesday, in spite of new data -- including large job losses among U.S. employers and a slumping service sector -- that failed to inspire confidence in a U.S. economy already in recession for a year. [
]Other economies worldwide are faring no better. A corporate survey in Japan signalled the country's economic performance in the third quarter may have been even worse than first reported. [
]Central banks have been cutting rates aggressively.
Thailand on Wednesday cut its benchmark by a full percentage point, while New Zealand slashed them by a record 150 basis points to their lowest in five years. See [
]Major share indexes in Shanghai <
>, Hong Kong < > and Singapore <.FTSTI> rose about 2 percent each, while markets in South Korea < > and Taiwan < > posted smaller gains.DOLLAR, YEN ADVANCE
The euro and the British pound remained vulnerable ahead of ECB and BOE meetings later in the day that are expected to result in hefty interest rate cuts in a bid to revive economic growth.
The euro was down 0.2 percent from late New York trade at $1.2690 <EUR=>, while sterling edged down 0.1 percent to $1.4770 <GBP=D4>.
Meanwhile, the dollar edged down 0.1 percent to 93.17 yen <JPY=>, above Wednesday's five-week low of 92.53 yen.
Expectations for a slump in weak global demand meanwhile sent oil prices to as low as $45.75 a barrel <CLc1>, their lowest in nearly four years.
Gold <XAU=> was range-bound after its prior day slump, trading at $771.75, down $0.75 from New York's notional close.