我正面临着这个例外,An attempt has been made to Attach or Add an entity that is not new, perhaps having been loaded from another DataContext. This is not supported。当我尝试将一个新实体插入到我的Employees表(主实体)中时。
主雇员表和details Orders表之间有一种关系,我确信这两个表(特别是Employee.Orders EntitySet)之间的关系是造成问题的原因,因为当我删除关系时,它会返回到Employees表中,不会出现任何
在启动应用程序时出现以下错误,只有在域对象上添加@cache(usage=CacheConcurrencyStrategy.READ_WRITE)注释时才会得到此异常。如果我只使用注释@Cacheable(true),它不会给出这个错误。
org.hibernate.cache.NoCacheRegionFactoryAvailableException: Second-level cache is used in the application, but property hibernate.cache.region.factory_class is not given, please ei