Hello,
I am using Virtuoso (7.1.0). It is installed on a server machine. I am
trying to remove a large RDF graph from my Virtuoso. It contains
2,590,994,053 triples. I was trying to delete the graph with the following
command.
SPARQL DROP SILENT GRAPH <http://ndssl.bi.vt.edu/chicago/>
However after running for a long time, Virtuoso is giving me following
error.
*** Error 08S01: [Virtuoso Driver]CL065: Lost connection to server at
line 6 of Top-Level:SPARQL DROP SILENT GRAPH <
http://ndssl.bi.vt.edu/chicago/>
This delete command down my Virtuoso server as well. I also try with
SPARQL "CLEAR" command. After running for a long time, it also terminates.
BTW I have increase memory size to 128 GB and MaxCheckpointRemap. I have
used following values. However, it does not work.
NumberOfBuffers = 10900000
MaxDirtyBuffers = 8000000
MaxCheckpointRemap = 650000000
Please let me know how can I remove this large graph from my Virtuoso
triple store. I have some other graphs in Virtuoso as well. I do not want
to remove those.
Thank you.
Regards,
S.M.Shamimul Hasan
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