Ismail Yakubu scored an equaliser to ensure that Barnet and Rochdale will have to replay their FA Cup tie.
Rochdale's Will Buckley came closest to a first-half opener with a shot across face of the Bees goal.
Chris Dagnall converted Gary Jones's cross from two yards to put Rochdale ahead early in the second half.
Yakubu converted from eight yards after a free-kick from Nick Deverdics deflected into his path before Dagnall missed a great chance late on.
Barnet boss Paul Fairclough told BBC London 94.9:
"We're all a little bit flat at the moment, disappointed that we didn't win today. But the most important thing is we've still got another opportunity.
"If you could go back six games ago, if we had conceded the way we did today, we could have crumbled and folded but that's not happening now."
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