Not sure if I should ask it here.Anyway,这里有懂build index for hash

Unloaded a huge DB table into a hash data file(1,5810,855 rows with rec length of 136). Then it tried to build index for this file. It gave this error msg when building the index: "The rec length is not a multiple of the file size. 15810855 (nbr recs) times 136(rec len) !=0 (file size). I don't understand why it says the file size is 0. I checked the file size and it is correct (15810855*136). Anyone has any idea on this? Thx...