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I load a large rdf dataset into virtuoso, it used about 5GB disk space shown in virtuoso.db, and then I use the isql command: SQL> SPARQL CLEAR GRAPH <graph-name>; after remove all triples , the file virtuodo.db is still hold on 5GB disk space? how can I get back my disk space? |
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The Virtuoso Server will not release pre-allocated block thus the database will not reduce in size. The only way to recover is to probably dump and restore the database, essentially building a new database. The Virtuoso vacuum function can be used compact tables and index and improve performance but it will not reclaim disk space, see: |
