The TPC-H benchmark runs differently than the TPC-C benchmark, it is not designed to run at that high of a user load. The power test is designed to run with one user. There is also a throughput test that is not automatically generated that is designed to run with multiple users but the scale factor will need to be adjusted accordingly. For example 2 users (streams) run at a scale factor of 1, 3 at a scale factor of 10, 4 at a scale factor of 30. See the chart on page 105 of the TPC-H specification document for more information (http://www.tpc.org/tpch/spec/tpch2.7.0.pdf).
There is a script file that contains the user streams for the throughput test, the TPC-H Stream script, attached to this solution.