Shares in Asia edged higher and gold continued its record climb on Tuesday as markets weighed prospects for a US government shutdown that would delay closely watched jobs figures.

In Hong Kong, the benchmark Hang Seng Index rose 51 points, or 0.19 percent, to open at 26,674.

On the mainland, the benchmark Shanghai Composite Index opened up 0.19 percent at 3,869, while the Shenzhen Component Index opened 0.19 percent higher at 13,504.

The ChiNext Index, tracking China's Nasdaq-style board of growth enterprises, was up 0.04 percent to 3,239.

The Australian dollar held gains before a meeting by the Reserve Bank of Australia, where it is expected to hold pat on policy.

Oil fell on prospects for increased production from Opec+, while China's purchasing managers' index for the manufacturing sector stood at 49.8 in September, up 0.4 percentage points from August, official data showed.

US Vice President JD Vance said the government appeared "headed to a shutdown" after little progress in budget talks between President Donald Trump and Democratic opponents.

A government closure would halt the publishing of critical employment numbers later this week, putting the spotlight on the Labor Department's Job Openings and Labor Turnover Survey (Jolts) report on August job openings due later on Tuesday.

"It does look as though markets are bracing themselves for the likelihood that we will see a shutdown," Ray Attrill, the head of FX research at National Australia Bank, said on a podcast. "If we know we're not going to get the payrolls numbers, it will just shine a brighter spotlight on the numbers that we do have."

MSCI's broadest index of Asia-Pacific shares outside Japan was up 0.5 percent in early trading, poised for a 5.6 percent gain this month that would be the best in a year. Japan's Nikkei stock index slid 0.3 percent, down for a third day.

The US dollar was flat at 148.62 yen after a 0.6 percent slide on Monday. The euro was little changed at $1.1723. The Australian dollar strengthened 0.2 percent versus the greenback to $0.6587.

The US Jolts report is the first of several indicators expected ahead of the September employment report due on Friday that is considered key to the Federal Reserve's calculations for the timing of rate cuts. A protracted closure could leave the Fed flying blind on the economy when it meets on October 29.

Analysts expect Jolts to show job openings held firm at around 7.18 million in August.

"The most immediate implication for the markets is the shutdown may delay the release of certain data, including the critical non-farm payrolls report," Capital.com analyst Kyle Rodda wrote in a note.

"The primary focus for market participants is currently the path forward for US interest rates, with asset prices being supported by the notion that cuts are coming and they could end up being relatively deep."

Without a deal, a US government shutdown would begin from Wednesday, the same day when new US tariffs are supposed to go into effect on heavy trucks, patented drugs and other items. The White House announced revised tariffs on furniture and cabinets late on Monday that are due to kick in on October 14.

In Asian economic data, China's purchasing managers' index for September suggested producers are waiting for further stimulus to boost domestic demand, as well as clarity on a US trade deal.

The economic and trade uncertainty was a tailwind for gold, which reached an all-time high US$3,843. (Reuters/Xinhua)