An administration server (10) performs a process of acquiring by the first information on the first resources from a resource used by a function which is executed to apply to a server on which a patch. Then, the administration server (10) executes a process of acquiring by the second second resource information about a resource to be accessed by the patch when the patch is performed. Thereafter, the administration server (10) performs a process of determining whether the patch is to be applied from, based on the first resource information acquired in the first acquiring, and the second resource information acquired in the second acquiring.