Row_Count=n

    Specifies that Oracle Rdb buffer multiple rows between the Oracle
    Rdb server and the RMU Load process. The default for n is 500
    rows; however, this value should be adjusted based on working
    set size and length of loaded data. Increasing the row count may
    reduce the CPU cost of the load operation. For remote databases,
    this may significantly reduce network traffic for large volumes
    of data because the buffered data can be packaged into larger
    network packets.

    The minimum value you can specify for n is 1. The default row
    size is the value specified for the Commit_Every qualifier or
    500, whichever is smaller.