* Oil climbs back above $30 a barrel after overnight drop
* Wall Street shares rebound, Apple results in focus
* Jitters remain after China shares fall to 14-month low
* Hopes of dovish U.S. Fed lend some support (Updates market action, changes dateline, previous LONDON)
By Richard Leong
NEW YORK, Jan 26 (Reuters) - Global stock markets and oil prices rose on Tuesday in another volatile session on hopes oil producers would pare production to alleviate the supply excess that has punished equity prices and pushed oil values to 12-year lows.
Nervous investors put more money into low-risk yen, Swiss franc, gold, U.S. and German government debt as they await more clues whether the Federal Reserve and other central banks would provide support to stabilize markets that have been roiled partly due to worries about weakening economic growth in China.
The U.S. Federal Reserve is expected to leave interest rates unchanged after its two-day policy meeting, which begins later Tuesday, and signal it may not raise rates again, perhaps until mid-2016 at the earliest.
"It's going to go back and forth, and it looks like it's going to all depend on what the price of oil does today," said Matthew Tuttle, chief executive of Tuttle Tactical Management in Greenwich, Connecticut.
Top OPEC and Russian oil industry officials stepped up vague talk on Monday of possible joint action to remedy one of the worst supply gluts in decades, though there were others, including Kuwait, who say they doubt it will happen as long as others are increasing their output. crude LCOc1 was last up 36 cents, or 1.18 percent, at $30.86 a barrel, and U.S. crude CLc1 was last up 21 cents, or 0.69 percent, at $30.55 per barrel. oil market rebound rekindled some appetite for stocks.
In early U.S. trading, the Dow Jones industrial average .DJI was up 235.72 points, or 1.48 percent, to 16,120.94, the S&P 500 .SPX was 20.5 points, or 1.09 percent, higher at 1,897.58 and the Nasdaq Composite .IXIC was up 23.96 points, or 0.53 percent, to 4,542.45.
Some nervousness ahead of Apple's AAPL.O quarterly results later Tuesday, which are expected to show a sharp drop in iPhone sales, was mitigated by encouraging U.S. data on home prices and consumer confidence. pan-European FTSEurofirst 300 index .FTEU3 was up 0.5 percent at 1,329.86. Nikkei .N225 ended 2.4-percent weaker, part of a broad decline across Asia. Chinese shares .SSEC .CSI300 tumbled more than 6 percent to a 14-month low on renewed jitters over Beijing's ability to calm domestic markets. yen was initially stronger against the dollar and euro but reversed those gains with the rebound in stock and oil prices. It was last down 0.2 percent against the greenback at 118.47 yen JPY= and down 0.1 percent versus the euro at 128.46 yen.
The dollar was weaker against a basket of currencies, last down 0.2 percent at 99.199 .DXY .
Nagging worries about falling oil prices and the global economy supported demand for U.S. and German government bonds.
Benchmark 10-year Treasury yield US10YT=RR dipped half a basis point to 2.017 percent, and 10-year Bund yield DE10YT=RR declined 2 basis points to 0.46 percent. US/ GVD/EUR .
Spot gold prices XAU= rose for a second day. It was last up $5.74 or 0.52 percent, to $1,113.40 an ounce.