* White House extends $17.4 billion loan to automakers
* RIM, Oracle rise after quarterly results boost Nasdaq
* Retailers hurt as snow and rain threaten sales
* Dow up 0.5 pct, S&P up 0.9 pct, Nasdaq up 1.2 pct
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] (Updates to midday, changes byline)By Deepa Seetharaman
NEW YORK, Dec 19 (Reuters) - U.S. stocks rose on Friday after briefly flirting with negative territory following the U.S. government's announcement that it would extend a $17.4 billion lifeline to automakers buckling under falling consumer demand in the face of a year-long recession.
Stocks tempered an earlier 2 percent rise as investors grappled with the fact that the auto bailout was a temporary measure to a long-term problem that could have serious effects on the U.S. economy.
"In the plan, there's no new news about how the auto industry is going to come out of this," said Giri Cherukuri, head trader at OakBrook Investments LLC, in Lisle, Illinois. "It's not a true solution to the problem."
Retailers were another drag on the market and the S&P Retailers Index <.RLX> fell 2 percent as heavy snow and inclement weather nationwide threatened to dampen sales during the last weekend before the Christmas holiday.
The Dow Jones industrial average <
> advanced 45.56 points, or 0.53 percent, to 8,650.55. The Standard & Poor's 500 Index <.SPX> rose 8.26 points, or 0.93 percent, to 893.54. The Nasdaq Composite Index < > gained 19.18 points, or 1.24 percent, to 1,571.55.Shares of General Motors Corp <GM.N> jumped 11.2 percent to $4.07 after U.S. President George W. Bush said it would be irresponsible to let the companies go bankrupt. For details, see [
]Investors had feared wide-reaching fallout from the potential failure of one of Detroit's Big Three automakers. The government loans would be called back if they cannot prove they are viable by March 31, an administration official said.
Rival Ford Motor Corp <F.N> jumped 1.1 percent to $2.87.
The Nasdaq outperformed the other indexes, lifted by gains in Oracle Corp <ORCL.O> and Research in Motion <RIM.TO> <RIMM.O> the day after both companies reported quarterly results that were better than Wall Street's lowered expectations.
Shares of BlackBerry maker Research in Motion surged almost 10 percent to $42.12 on Nasdaq. After the bell on Thursday, the company gave a better-than-expected growth forecast for its smartphone devices. [
].Oracle's stock also climbed nearly 8 percent to $17.88, the day after the business software maker reported a drop in new sales that was not as bad as some had feared.
But a drop in retailers' stocks, including Nordstrom Inc <JWN.N> and JC Penney Co Inc <JCP.N>, helped curtail previous gains as weekend sales were threatened by inclement weather.
Nordstrom's stock fell 6.8 percent to $12.51 and JC Penney lost 3.6 percent to $19.99, both on the New York Stock Exchange.
"The snow on the East Coast will hurt those retailers, especially as it is the busiest shopping weekend of the year," said David Berman of hedge fund Durban Capital in New York, which specializes in consumer and retail-related stocks. (Additional reporting by Jennifer Ablan; Editing by Jan Paschal)