Abstract: An applicable patch selection device comprises a first extraction unit for extracting, on the basis of information on an application target system, information on all the patches unapplied to the application target system from among information on released patches, an input unit to which a user's policy is input, a second extraction unit for extracting, in accordance with the user's policy input into the input unit, information on an unapplied patch to be actually applied to the application target system from among the information on all the unapplied patches extracted by the first extraction unit, and an unapplied patch obtainment unit for obtaining an unapplied patch corresponding to the information, extracted by the second extraction unit, on the unapplied patch to be actually applied to the application target system.

Abstract: In order to minimize the time during which the computer system is stopped for patch application, an application patch extraction process comparing latest patch information and applied patch information to extract unapplied patches and to extract, among the unapplied patches, application patches whose application target is installed software; a applicable-patch-during-operation-continuation extraction process extracting, among the application patches, applicable-patches-during-operation-continuation that do not have at least user asset destruction possibility or incompatibility possibility; a patch application schedule generation process generating a patch application schedule to apply the applicable-patches-during-operation-continuation during a time zone in which software being the application target of the applicable-patches-during-operation-continuation is not executed; and a patch application process applying the applicable-patches-during-operation-continuation to software being the application target, ac

Abstract: An applicable patch selection device comprises a first extraction unit for extracting, on the basis of information on an application target system, information on all the patches unapplied to the application target system from among information on released patches, an input unit to which a user's policy is input, a second extraction unit for extracting, in accordance with the user's policy input into the input unit, information on an unapplied patch to be actually applied to the application target system from among the information on all the unapplied patches extracted by the first extraction unit, and an unapplied patch obtainment unit for obtaining an unapplied patch corresponding to the information, extracted by the second extraction unit, on the unapplied patch to be actually applied to the application target system.