[Virtuoso 7] Upload large RDF file into quad store

Dear all,

I am using virtuoso-open-source-7.0.0.
What is a good way of uploading a large file (say 5GB) into Virtuoso 7
database? It is a Turtle file format, around 50M triples.

Solutions I tried:
1) Upload the entire file at once
I tried more than once and all times it got stuck while having exactly 39%
uploaded using Conductor quad store uploader, then nothing seems to change
after that.

2) Split the file into may shorter files (~150 MB each) and upload each of
them separately.
2.1. I tried to upload them programmatically using Open RDF API for Java,
but it takes forever to upload a single file. I could not wait, so I do not
know exactly how long it takes.
2.2. I tried to upload them manually using Conductor quad store uploader.
These smaller files seem get uploaded very quickly in the beginning, but it
somehow stops working after having some of the data uploaded, then I am
unable to upload more files.

I do not know what else to do.

Have you ever had to do something like this? What did you do?

Thanks a lot in advance.

-
Thank you!
Regards,

Souza, Renan F. S.
Bachelor of Computer Science Student
Federal University of Rio de Janeiro, Brazil
Missouri State University, Springfield, MO

+55-21-99257-3934
Personal email: renan-francisco@hotmail.com