[Virtuoso-users] Cannot delete a graph

[Alex]

Hello,
trying to delete a graph I get the error SR201: Primary key not found in
delete.

I have tried, I think, almost everything such as drop, delete all triples
and the following queries for resyncronization:

log_enable (2);
INSERT SOFT DB.DBA.RDF_QUAD (G,S,P,O) SELECT G,S,P,O FROM DB.DBA.RDF_QUAD
TABLE OPTION (INDEX RDF_QUAD_POGS);

SELECT COUNT(*) FROM DB.DBA.RDF_QUAD TABLE OPTION (INDEX RDF_QUAD_POGS) ;

SELECT COUNT(*) FROM DB.DBA.RDF_QUAD TABLE OPTION (INDEX RDF_QUAD);

I do not get the same numbers for the two last queries.

Even though the graph is shown using:
DB.DBA.SPARQL_SELECT_KNOWN_GRAPHS();

Is there anything else I could try?

Thanks.