* MSCI world equity index up 0.5 pct at 270.13
* Yen briefly hits 7-week high vs dollar
* Euro firmer after ECB leaves rates on hold
By Natsuko Waki
LONDON, Sept 3 (Reuters) - World stocks and oil prices rose on Thursday, bolstered by firmer Chinese shares, while the euro held firm after the European Central Bank left interest rates at record lows as expected.
The yen briefly hit a seven-week high against the dollar as investors grew cautious ahead of Friday's closely-watched U.S. jobs report.
The ECB left interest rates steady at 1 percent for a fourth month running. At his news conference, President Jean-Claude Trichet is likely to preach caution about a speedy rebound from recession even as a survey showed the euro zone services economy jumped back almost to expansion in August. [
]And the ECB will produce new economic forecasts likely to portray a rosier view of the economy.
"There's no doubt that the forecast is going to be revised higher, it's just a matter of how much," said Stephen Koukoulas, global strategist at TD Securities in London.
"A confirmation of this will be something that the market will take with a degree of optimism, which could result in a mildly bullish tone for the euro."
For stocks, the MSCI world equity index <.MIWD00000PUS> was up 0.5 percent while the FTSEurofirst 300 index <
> rose 0.7 percent.U.S. stock futures rose 0.8 percent <SPc1>, pointing to a firmer open on Wall Street later. Chinese shares <
> closed 4.8 percent higher.U.S. crude oil <CLc1> rose 1.7 percent to $69.21 a barrel.
Markit's Euro zone final services Purchasing Managers Index rose to 49.9 in August from 45.7 in July, just shy of the 50.0 mark that divides growth from contraction.
Group of 20 finance chiefs meeting in London for a two-day meeting are set to tentatively discuss exit strategies -- plans to wind down trillions of dollars of fiscal and monetary stimulus measures.
However, some policymakers are keen to stress their commitment to keep stimulus in place until the recovery becomes self-sustainable, which would be supportive of risky assets.
"(The G20 meeting) is likely to show tension between countries, with some wanting to prepare exit strategies and others warning that an early exit, especially from expansionary monetary policy measures, could lead to a double dip," BNP Paribas said in a note to clients.
SHANGHAI CORRELATION
Emerging stocks <.MSCIEF> rose 1.1 percent.
Shanghai stocks <
> climbed after China's top regulator assured investors that the country's market was healthy, sparking hopes of government policy support.Chinese stocks have been increasingly correlated with other share markets.
According to Brown Brothers Harriman, the correlation between the Shanghai index and the S&P 500 index has shot up in the last three months and is now more than three times more closely correlated than over the past two years.
The correlation between the euro/dollar exchange rate and the Shanghai index is now at its highest since the second quarter of 2007.
The highest over the past decade was recorded in August 2005 with a correlation of about 40 percent.
The yen rose as high as 91.95 per dollar <JPY=> before falling back to 92.32. The dollar <.DXY> fell 0.4 percent against a basket of major currencies. The euro was up half a percent to $1.4340 <EUR=>.
The September Bund future <FGBLc1> fell 27 ticks. (Additional reporting by Simon Falush, editing by Mike Peacock)