Abstract: A fracturing method, to cause a crack in bedrock, includes installing a depressurizing device in a well in the bedrock, and depressurizing the inside of the well with the installed depressurizing device. The installing step includes installing, in the well, a connecting pipe, which is connected to the depressurizing device, and a packer, which is attached to the connecting pipe, and the depressurizing step includes shutting off a gap between the well and the connecting pipe, with the packer, and depressurizing a region in the well below the packer, with the depressurizing device.

Abstract: A well drilling bit for drilling bedrocks includes a columnar bit body, and a drilling fluid flow path formed in the bit body to wash away drilled cuttings from a bottomhole and/or a periphery of the bit body. The flow path is provided with a venturi mechanism including a venturi tube having a reduced-diameter portion where a cross sectional area is reduced and capable of generating a decompression region around a tip of the bit body, the decompression region being more decompressed than a surrounding by the Venturi effect.

Abstract: A fracturing method, to cause a crack in bedrock, includes installing a depressurizing device in a well in the bedrock, and depressurizing the inside of the well with the installed depressurizing device. The installing step includes installing, in the well, a connecting pipe, which is connected to the depressurizing device, and a packer, which is attached to the connecting pipe, and the depressurizing step includes shutting off a gap between the well and the connecting pipe, with the packer, and depressurizing a region in the well below the packer, with the depressurizing device.

Abstract: A packer connected to a casing pipe, the packer including a connecting tube made of metal and connected to the casing pipe, and a packer part made of metal and attached around the connecting tube. The packer part has a hollow part inside. A sealed liquid that thermally expands is sealed in the hollow part. An outer peripheral wall of the packer part includes an expansive part that protrudingly deforms outward with the thermal expansion of the sealed liquid.

Abstract: A well drilling bit for drilling bedrocks includes a columnar bit body, and a drilling fluid flow path formed in the bit body to wash away drilled cuttings from a bottomhole and/or a periphery of the bit body. The flow path is provided with a venturi mechanism including a venturi tube having a reduced-diameter portion where a cross sectional area is reduced and capable of generating a decompression region around a tip of the bit body, the decompression region being more decompressed than a surrounding by the Venturi effect.

Abstract: A packer connected to a casing pipe, the packer including a connecting tube made of metal and connected to the casing pipe, and a packer part made of metal and attached around the connecting tube. The packer part has a hollow part inside. A sealed liquid that thermally expands is sealed in the hollow part. An outer peripheral wall of the packer part includes an expansive part that protrudingly deforms outward with the thermal expansion of the sealed liquid.

Abstract: A method performed by a computer, the method includes: determining a portion of a program run by a first information processing apparatus, the portion corresponding to a difference between first configuration information related to the first information processing apparatus and second configuration information related to a second information processing apparatus; and deciding a change type to be applied to the portion of the program, based on details of the difference.

Abstract: An execution control method performed by a processor includes storing a first plurality of commands executed in the first computer and a first execution order in a memory; executing the first plurality of commands according to the first execution order when executed on the third computer; storing a second plurality of commands executed in the second computer and a second execution order in the memory; executing the second plurality of commands according to the second execution order when executed on the fourth computer; storing information generated by executing a command among the first plurality of commands and the second plurality of commands in the memory as configuration information each time the command is executed; and selecting a command among a first earliest command among unexecuted commands of the first plurality of commands and a second earliest command among unexecuted commands of the first plurality of commands, and executing the command.

Abstract: A non-transitory computer-readable recording medium having stored therein a test program that causes a computer to execute a process comprising: starting a test of a test-target program containing a plurality of modules by executing a plurality of individual tests, the plurality of individual tests being associated with the plurality of modules, respectively; generating test-relationships information that includes relationships between the plurality of individual tests based on module-relationships information including relationships of the plurality of modules; and in cases in which results of the plurality of individual tests include one or a plurality of specific results fulfilling a specific condition, specifying one or a plurality of additionally executing tests based on the one or plurality of specific results and the test-relationships information.

Abstract: A non-transitory, computer-readable recording medium having stored therein a program for causing a computer to execute a process, the process comprising: detecting whether second data, stored in a second storage device, updated from first data stored in a first storage device has been updated, upon detecting that the second data has been updated, obtaining the second data before update from the second storage device, and storing the second data into the first storage device, and when the second data is contained in the first storage device, obtaining the second data from the first storage device, and generating third data using the second data, and the first data.

Abstract: A computer executes a process includes: extracting meta commands from commands included in scripts based on number of occurrences of the commands, the plurality of meta commands being commands or sets of a command and argument; extracting specific meta command from the meta commands included in each of the scripts based on information on the number of occurrences of the meta commands included in each of the scripts and information on the scarcity of each of the meta commands in the scripts; and determining resemblance for a pair of scripts that are included in the scripts by calculating a probability that a same combination of meta commands exists in the pair of scripts.

Abstract: A non-transitory computer-readable recording medium has stored therein a patch scheduling program that causes a computer to execute a process. The process includes managing, aggregating, determining, and scheduling. The managing includes managing a system including a plurality of software that control a plurality of virtual machines. The aggregating includes aggregating virtual machines including a similar trend regarding a predetermined index thereof with a mutually-same virtual software. The determining includes determining a time period during which the virtual machines are to be moved, based on the trends of the virtual machines aggregated with the mutually-same virtual software and based on moving time of the move of the virtual machines to a different virtual software included in the plurality of virtual software. The scheduling includes scheduling applying a patch to each of the plurality of virtual software at the determined time periods.

Abstract: A non-transitory, computer-readable recording medium having stored therein a program for causing a computer to execute a process, the process comprising: detecting whether second data, stored in a second storage device, updated from first data stored in a first storage device has been updated, upon detecting that the second data has been updated, obtaining the second data before update from the second storage device, and storing the second data into the first storage device, and when the second data is contained in the first storage device, obtaining the second data from the first storage device, and generating third data using the second data, and the first data.

Abstract: A computer executes a process includes: extracting meta commands from commands included in scripts based on number of occurrences of the commands, the plurality of meta commands being commands or sets of a command and argument; extracting specific meta command from the meta commands included in each of the scripts based on information on the number of occurrences of the meta commands included in each of the scripts and information on the scarcity of each of the meta commands in the scripts; and determining resemblance for a pair of scripts that are included in the scripts by calculating a probability that a same combination of meta commands exists in the pair of scripts.

Abstract: In an information processing apparatus for managing a system including apparatuses classified into clusters, an acquiring unit acquires history records from a memory unit based on scheduled change information indicating a scheduled change in configuration information of apparatuses accounting for a first rate amongst apparatuses belonging to a particular cluster. Each history record includes content related to a change in the configuration information of at least one or more apparatuses amongst apparatuses belonging to the same cluster. The acquiring unit acquires, from the memory unit, history records each associated with a change in the configuration information of apparatuses accounting for a second rate amongst apparatuses belonging to the same cluster. The second rate satisfies a predetermined similarity relationship with the first rate. A predicting unit predicts, based on the acquired history records, an impact on the system due to implementing the scheduled change.

Abstract: A non-transitory computer-readable recording medium having stored therein a test program that causes a computer to execute a process comprising: starting a test of a test-target program containing a plurality of modules by executing a plurality of individual tests, the plurality of individual tests being associated with the plurality of modules, respectively; generating test-relationships information that includes relationships between the plurality of individual tests based on module-relationships information including relationships of the plurality of modules; and in cases in which results of the plurality of individual tests include one or a plurality of specific results fulfilling a specific condition, specifying one or a plurality of additionally executing tests based on the one or plurality of specific results and the test-relationships information.

Abstract: A non-transitory, computer-readable recording medium stores a file evaluation program that causes a computer to execute a process including classifying, for each server group of a plurality of server groups, a plurality of files of a same name into a layer that is one of a plurality of layers, based on a matching degree of contents of the plurality of files, the plurality of files being stored in the server group; and extracting a first plurality of files having a same name, being classified into different layers, and being stored in different server groups among the plurality of server groups.

Abstract: A non-transitory computer-readable recording medium has stored therein a patch scheduling program that causes a computer to execute a process. The process includes managing, aggregating, determining, and scheduling. The managing includes managing a system including a plurality of software that control a plurality of virtual machines. The aggregating includes aggregating virtual machines including a similar trend regarding a predetermined index thereof with a mutually-same virtual software. The determining includes determining a time period during which the virtual machines are to be moved, based on the trends of the virtual machines aggregated with the mutually-same virtual software and based on moving time of the move of the virtual machines to a different virtual software included in the plurality of virtual software. The scheduling includes scheduling applying a patch to each of the plurality of virtual software at the determined time periods.

Abstract: An information processing apparatus monitors one or more apparatuses based on information on multiple items acquired from the apparatuses. Information on an item #3 is associated with information on items #1 and #2. The information processing apparatus examines the information on the item #3. In the case where no failure is detected in the examination of the information on the item #3, the information processing apparatus omits examination of the information on the items #1 and #2. On the other hand, in the case where a failure is detected in the examination of the information on the item #3, the information processing apparatus examines the information on each of the items #1 and #2.

Abstract: An information collection device acquires information from a plurality of devices connected through a network. The information collection device includes: a first addition unit that adds, for each of the devices, an information collection duration required to collect information of the devices to a communication duration required to communicate with the devices; a second addition unit that adds a maximum duration among the durations by addition of the first addition unit to a predetermined time to obtain a first time; a subtraction unit that subtracts the information collection duration of each of the devices from the first time; a first setting unit that sets a time obtained by the subtraction unit as a second time that is when information collection starts at each of the devices; and an acquisition unit that acquires information obtained by the information collection that starts at the second time.