文档解释
ORA-54518: shared edge of composite surface not oriented correctly
Cause: A shared edge (one shared by two polygons) in a composite surface was not correctly oriented. Each shared edge must be oriented in one direction with respect to its first polygon and then in the reverse direction with respect to its second polygon.
Action: Reverse one of the directions of the shared edge with respect to its polygons.
ORA-54518的错误消息表明，复合表面共享边界不正确定向。
官方解释
常见案例
一般处理方法及步骤
1.首先，检查有问题的子表面，并确保它们正确定向。
2.然后，重新尝试创建复合表面。
3.如果问题仍然存在，请联系Oracle技术支持，以确认有问题的子表面是否正确定向，并提供错误报告。有关错误报告的更多信息，请参阅Oracle数据库错误文档。
