BadParentLinks
The BadParentLinks parameter appears in the [AutoRepair] section of your virtuoso.ini file.
Occasionally, internal errors may occur in your database.
Moreover, these errors may result in a loss of integrity of references.
If you enable BadParentLinks, you permit the database to automatically repair these references, without incurring a crash dump and subsequent restore.
OpenLink suggests that you set BadParentLinks to 0.