De-link the root database or user from the secure zone.
Only the zone creator can DROP a root.
The root cannot contain any objects, descendants, roles, constraints, or profiles.
The root database or user cannot have any Access logging or Query logging rules enabled on them or created by them.
All the zone guests must be removed from the zone.
The root user should not be logged in while dropping zone root.
Drop a Root
ALTER ZONE zn_01 DROP ROOT;