How can I replicate all graphs? To replicate all graphs ( except the system graph http://www.openlinksw.com/schemas/virtrdf# ), one should use http://www.openlinksw.com/schemas/virtrdf#rdf_repl_all as graph IRI: SQL> DB.DBA.RDF_RDF_REPL_GRAPH_INS ('http://www.openlinksw.com/schemas/virtrdf#rdf_repl_all'); Related Virtuoso Tips and Tricks Collection Replicate graphs with UNKNOWN tag: http://www.w3.org/1999/xhtml:nowikiRDF_REPL_GRAPH_INS function.