Error Messages (N) A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #No permission to execute procedure DB.DBA.SPARUL_DROP Grant the SPARQL_UPDATE role to the SPARQL to allow graph deletion. Note their is a new role in 5.0.7 entitled SPARQL_SPONGE. SPARQL_SPONGE allows only Virtuoso Sponger cartridges to perform updates as a special case. Thus, ensure that this option has not been set by mistake or even that the default role of SPARQL_SELECT is not still being used. You can easily check this by editing the SPARQL user account in the Virtuoso Conductor.