According to Official Guinness Records,
The most consecutive at-bats in one Nippon Professional Baseball inning by a team is 11 and was achieved by the Yakult Swallows against the Orix Buffaloes (both Japan) in the fifth inning at the Kyocera Dome, Osaka, Japan, on 14 June 2009. The inning was a 10-run inning and helped the Swallows to an eventual 14-10 victory. The score was tied at 2-2 at the time when Norichika Aoki started the run with a single, eight consecutive hits followed until a walk ended the run of hits. The at-bats continued though with Yakult scoring home run and a double to finish off the incredible sequence.
For a complete list of 2009 records, please visit 2009 Guinness Records in Japan.