Import the RDF dump into the Virtuoso

[TaylorWPY]

There is no *.graph files from my configs/wikidata-rdf/ path, how can I get this?

[daniilsorokin]

The last version of the https://public.ukp.informatik.tu-darmstadt.de/wikidata-dump/wikidata-rdf-snap-2017.zip should have the .graph files as well (17GB download).
The graph files are essentially just a text file with a single line with the name of the graph. The file should have the same name as an pdf file you want to import and it tells Virtuoso how to call the new graph in the RDF storage.

For instance:
You might have an RDF dump file wikidata-statements.nt.gz that you are importing. Then creating a file wikidata-statements.nt.graph with a single line:

http://wikidata.org/statements

means the content of wikidata-statements.nt.gz should be stored under the graph http://wikidata.org/statements.