File too big for filehash?

Dear R users,

I try to use a very large file (~3 Gib) with the filehash package. The
length of the dataset is around 4,000,000 obs. I get this message from R
while trying to "load" the dataset (named "cc084.csv"):

dumpDF(read.csv("cc084.csv", header=T), dbName="db01")

Erreur : impossible d'allouer un vecteur de taille 15.6 Mo (French)
Error: impossible to allow a vector of size 15.6 Meg (my English
translation)

Is there anything I can do?
My R version is 2.8.1.

-----
Rock Ouimet
Forest Soil Scientist
MRNF-QC

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