* US stocks jump after Wall Street's worst day in 20 years
* Dollar rises over 2 pct vs yen; oil adds $2 a barrel
* Cautious optimism in markets despite bailout's rejection
* Bonds fall as hope of eventual bailout cuts safety bids (Adds close of European markets, updates prices)
By Herbert Lash
NEW YORK, Sept 30 (Reuters) - The U.S. dollar surged and global stocks clawed back on Tuesday from Wall Street's worst day in 20 years as investors bet Washington will eventually pass a plan to rescue the troubled financial sector.
U.S. and euro zone government debt prices slipped, paring Monday's frantic charge into safe-haven securities. Gold also retreated as the dollar's surge prompted profit-taking on sharp gains after Congress rejected the banking sector bailout plan.
Oil rebounded more than $2 a barrel toward $99 after nearly a 10 percent drop the previous day as fear of a major meltdown in capital markets eased and hope among investors returned.
The dollar jumped 2 percent against the yen <JPY=> and 3 percent against the Swiss franc <CHF=> as cautious optimism Congress will approve a $700 billion plan to bail out banks replaced the shock after U.S. lawmakers rejected the bill.
Strong readings on U.S. consumer confidence and Chicago PMI, a measure of manufacturing activity in the U.S. Midwest, boosted equities and further curbed the appeal of debt. The two September reports tempered fears about the economy's health.
"There are at least some hints of optimism that something will still happen soon with regards to the bill," said Jim Dunigan, managing executive of investments at PNC Wealth Management in Philadelphia. "All eyes are still on Washington."
U.S. stocks rose more than 3 percent, before paring some gains, adding to investor optimism after equity markets in Europe also added solid gains. The defeat in Congress buzzed nearly 9 percent off the broad S&P 500 on Monday.
Before 1 p.m. (1700 GMT), the Dow Jones industrial average <
> was up 243.00 points, or 2.34 percent, at 10,608.45. The Standard & Poor's 500 Index <.SPX> was up 33.34 points, or 3.01 percent, at 1,139.73, and the Nasdaq Composite Index < > was up 60.30 points, or 3.04 percent, at 2,044.03.Investors snapped up beaten-down shares, with shares of financial companies, including JPMorgan Chase <JPM.N>, up 12 percent, among the standouts.
Technology shares also bounced back, with Apple Inc <AAPL.O> the top boost on Nasdaq, a day after the tech-rich index posted its worst day since April 2000 when the dot-com bubble burst.
Talk that U.S. lawmakers may reach some kind of agreement by the end of the week and speculation that central banks could slash interest rates tempted investors back into markets.
"A lot will hinge on the passage of a rescue plan, the sooner the better. It remains an uncertainty in the market," said Kevin Mahn, chief investment officer at Hennion & Walsh Inc in Parsippany, New Jersey.
U.S. President George W. Bush said the legislative process on the bailout plan was not over and the economy depended on "decisive action" from the government.
European shares closed higher on Tuesday, bouncing from Monday's 3-1/2-year closing low.
The FTSEurofirst <
> index of leading European shares ended up 1.59 percent at 1,063.65. Banks added the most points to the index, with HSBC <HSBA.L> up 4.2 percent and Standard Chartered <STAN.L> jumping 8 percent.U.S government debt fell.
The benchmark 10-year U.S. Treasury note <US10YT=RR> fell 1-17/32 in price to yield 3.76 percent, and the 2-year U.S. Treasury note <US2YT=RR> fell 19/32 to yield 1.92 percent.
The yield on one-month T-bills <US1MT=RR>, which investors see as almost as good as cash, dipped closer to zero in early trading, a sign investors were still willing to earn close to nothing in return for not losing their shirts.
One goal of the failed bailout was to thaw credit markets, lower borrowing costs and unleash funds to banks, companies and consumers. With a rescue plan in limbo, interest rates in the interbank market soared, another sign all was still not well.
The yield on the London interbank offered rate (Libor) on overnight dollar funds jumped the most in any day on record, rising to 6.87 percent, according to Reuters data. It was the highest Libor rate, which is a reference for trillions of dollars of auto loans and corporate debt, in at least 7-1/2 years.
U.S. light sweet crude oil <CLc1> rose $3.07 to $99.44 a barrel.
Spot gold prices <XAU=> fell $24.45 to $878.80 an ounce.
Asian stocks fell, chalking up the biggest monthly decline in more than a decade, but didn't match the meltdown on Wall Street. Japan's Nikkei share average <
> closed down 4.1 percent to a three-year low, and the MSCI index of Asia-Pacific stocks outside Japan <.MIAPJ0000PUS> fell 2.73 percent. (Reporting by Ellis Mnyandu, Chris Reese, Nick Olivari and Richard Leong in New York and Jessica Mortimer, Brian Gorman, Alex Lawler and Jane Merriman in London; Editing by James Dalgleish)