Subject Duplicate values in system index
Author Rick Debay
gbak: restoring privilege for user SYSDBA
gbak: restoring SQL role: RDB$ADMIN
gbak: ERROR: attempt to store duplicate value (visible to active
transactions) in unique index "RDB$INDEX_39"

RDB$INDEX_39 relation name is RDB$ROLES.
RDB$ROLES has one row, RDB$ADMIN.

Where do I go from here?