JP2000215094A - Device and method for file restoration, device and method for process management, and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device and method for file restoration, device and method for process management, and recording medium which can back up and restore a file to be processed. SOLUTION: A process information acquisition part 11 obtains process information from an OS 20 and stores it in a process information storage area 71. A file monitor program 10 issues a WAIT instruction to a file updating process when the process enters an execution state. A file information acquisition part 12 obtains file information from the OS 20 and stores it in a file information storage area 72. A backup part 13 backs up the files to be updated in a backup area 73. When the file monitor program 10 resets the WAIT instruction, the file is updated. If an operation program 30 ends abnormally, a file restoration part 14 restores the backup file according to the process information and file information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file restoring apparatus for backing up and restoring a file when a file is processed by an application program (business program), a file restoring method and a recording medium, a process managing apparatus, a process managing method and a recording medium. About.

[0002]

2. Description of the Related Art Conventionally, as apparatuses for backing up files, apparatuses disclosed in JP-A-4-65733 (hereinafter referred to as JP-A-1) and JP-A-5-35567 (hereinafter referred to as JP-A-2) are disclosed. It has been known.

In the apparatus disclosed in the above publication 1,
When the contents of the file device are backed up to the backup file device and the write request to the file device is a content update to the copied area of the file device, the content update is reflected also in the backup file device, so that the file device is updated. And the backup file device to maintain the same content.

Further, in the device disclosed in the above publication 2, all the files in the file storage device are backed up in the secondary file storage device, and the updated files that have been updated are stored in the external storage device. ing.

[0005]

However, in the device described in the above publication, the contents of the entire file device must be backed up to a backup file device. For example, even when a plurality of files exist and a process is performed on one file (a file whose content is to be updated in the copied area), all the plurality of files must be backed up. That is, a large storage area is required for backing up files, and storage medium resources cannot be used effectively.

[0006] Also, in the device described in the above publication 2, all the files in the file storage device must be backed up in the sub-file storage device. In this case, too, a large storage area for backing up files is required, and storage medium resources cannot be used effectively.

It is therefore an object of the present invention to provide a file restoration apparatus, a file restoration method and a recording medium, a process management apparatus, a process management method and a recording medium which can back up and restore a file to be processed. .

[0008]

In order to achieve the above-mentioned object, a file restoration apparatus according to a first aspect of the present invention comprises a process for storing process information relating to a predetermined process in an application program; Means for managing the file update process in the application program being executed, process information acquisition means for acquiring the process information on the process of the file update process from the management means, and the executable state of the file update process that has transitioned to the execution state. First status change means, file information acquisition means for acquiring file information on a file to be updated by the file update process from the management means, and backup means for backing up the file to be updated And the update processing target A second status change unit that changes the executable process to an executable status when a file is backed up; a process information obtained by the process information obtaining unit when a failure occurs; File restoration means for restoring files backed up by the backup means based on the file information acquired by the means.

In such a file restoration device,
The file update process that has transitioned to the execution state is temporarily made executable by the first state changing unit, and the file to be updated is backed up before being updated by the backup unit. After this file is backed up, the process of the file update process in the executable state is performed by the second state changing unit.
The state is changed to the execution state again. Thereafter, the file before the update is updated. Then, when a failure occurs, for example, during or after the update of the file to be updated, or when the execution of the application program is abnormally terminated, the file restoring unit performs the processing based on the process information and the file information. The files that have been backed up are restored.

Therefore, it is possible to back up only the file to be updated and restore the backed up file based on the process information and the file information.

In the file restoring apparatus according to the first aspect, the file information acquiring means may acquire file information on a plurality of files to be updated that are related to each other.

In this case, a plurality of files that have been backed up can be restored based on the process information and the file information about each of the plurality of files related to each other.

Further, in the file restoring apparatus according to the first aspect, a process information storing means for storing the process information obtained by the process information obtaining means, and the file information obtained by the file information obtaining means are stored. File information storage means, backup file storage means for storing files to be backed up by the backup means, and after the files are restored by the file restoration means, the process information storage means, the file information storage means, and backup file storage And a deletion unit for deleting each stored content of the unit.

In this case, since the stored contents of the process information storage means, the file information storage means, and the backup file storage means are deleted after the files are restored, the storage medium resources can be used effectively.

In order to achieve the above object, a file restoration apparatus according to a second aspect of the present invention comprises: a process information acquiring unit for acquiring process information on a file update process in a running application program from an operating system; A first state changing unit that changes the process that has transitioned to the execution state to an executable state, a file information obtaining unit that obtains file information on a file to be updated from the operating system, and a backup of the file to be updated. Backup means for performing the process, second state changing means for setting the process in the executable state to the execution state when the file to be updated is backed up, and the process information obtaining means for obtaining the process information when a failure occurs. Process information and the file Based on the file information data acquiring unit acquires, and a file restoration means for restoring a file that is backed up by said backup means.

To achieve the above object, a file restoring method according to a third aspect of the present invention includes a management step of managing process information on a predetermined process in an application program and file information on a file to be processed. A process information obtaining step of obtaining process information relating to a file update process in an executing application program from information content managed in the management step, and a process of executing the file update process which has transitioned to an execution state. A first state change step of setting a state, a file information obtaining step of obtaining file information on a file to be updated from the information content managed in the management step, and a backup for backing up the file to be updated Stay And a second state change step of bringing the process in the executable state into the execution state when the file to be updated is backed up, and in the process information acquisition step when a failure occurs. A file restoration step of restoring a file backed up by the backup step based on the process information and the file information acquired in the file information acquisition step.

To achieve the above object, a computer-readable recording medium according to a fourth aspect of the present invention manages process information on a predetermined process in an application program and file information on a file to be processed. A management function, a process information acquisition function of acquiring process information relating to a file update process in the application program being executed from the information content managed in the management step, and a process of the file update process transitioning to an execution state A first state change function to make the file executable, a file information acquisition function to acquire file information on a file to be updated from the information content managed in the management step, and a file information acquisition function to acquire the file to be updated. Backup machine to backup And a second status change function that sets the process in an executable state to an execution state when the file to be updated is backed up, and a process acquired by the process information acquisition function when a failure occurs. A program for executing a file restoration function for restoring a file backed up by the backup function based on information and file information acquired by the file information acquisition function is recorded.

To achieve the above object, a process management apparatus according to a fifth aspect of the present invention is a process management apparatus for managing a state of a process of a file update process in an application program, wherein the process has transitioned to an execution state. In this case, a first state change unit that sets the process in an executable state, a backup unit that backs up a file to be updated, and sets the process in an executable state to an execution state after the file is backed up. And second state changing means.

In this process management apparatus, the file update process that has transitioned to the execution state has been transitioned to the executable state by the first state changing means, and the file to be updated has been backed up by the backup means. Later, the state is changed to the execution state by the second state changing unit.

Therefore, before a file to be updated is updated, the file can be backed up. Therefore, even if a failure occurs in the file update process during the file update, the file before the update can be restored.

To achieve the above object, a process management method according to a sixth aspect of the present invention is a process management method for managing a state of a file update process in an application program being executed, wherein the process has an execution status. A first state change step of making the process executable, a backup step of backing up a file to be updated, and executing the process in an executable state after the file is backed up And a second state changing step of setting the state.

According to this process management method, the process that has transitioned to the execution state temporarily returns to the executable state, and after the file to be updated is backed up, transitions to the execution state again.

For this reason, even if a failure occurs in the file update process during the file update,
It is possible to restore the file before the update that was backed up before the update process.

[0024] In order to achieve the above object, a computer readable recording medium according to a seventh aspect of the present invention provides a computer readable recording medium which, when a file update process in an application program being executed transits to an execution state, executes the process. A first state change step for bringing the process into an executable state, a backup step for backing up a file to be updated, and a second state change step for bringing the process in an executable state into an execution state after the file is backed up Is recorded.

[0025]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a configuration diagram showing a configuration of a file restoration device according to an embodiment of the present invention.

[0026] The file restoration apparatus is used when an application program (for example, a business program) terminates abnormally due to an error in a file update process or the like.
The file that has been modified by the business program is restored.

As shown in FIG. 1, this file restoring apparatus is composed of a computer 1, which is composed of a secondary storage device 2, such as a hard disk, and an RA.
A memory 3, such as an M, an input / output unit 4, and a central processing unit (hereinafter, referred to as a CPU) 5 are connected to a bus 6.

The secondary storage device 2 stores a file monitoring program 10, an operating system (hereinafter referred to as OS) 20, and a business program 30, and a backup file 40 as required.

The file monitoring program 10 runs on the OS 20
Under the management of, the status of the file processing is monitored, and the failure of the file is recovered (file is restored). The details will be described later.

The OS 20 includes, for example, process information on a process of the business program 30 being executed by the CPU 5, file information on a file to be updated by the business program 30 being executed,
And management of system resources (hardware, software, human resources, etc.), and process control.

The OS 20 is an operating system capable of referring to various information of the business program 30 from other business programs.

The memory 3 has a storage area 50 for storing predetermined information, and a storage area 60 for storing an OS loaded from the secondary storage device 2 and a program.

The input / output unit 4 includes an input device (not shown) such as a keyboard and a mouse for performing various operations including a start operation of the business program 30, and various types of data including a message indicating an abnormal end of the business program 30. And an output device (not shown) such as a display for outputting information.

The CPU 5 controls the above-described components via the bus 6, loads the file monitoring program 10, the OS 20, and the business program 30 from the secondary storage device 2 to the memory 3, and executes the OS 20 and the respective programs. I do. That is, the CPU 5 realizes each function by executing the file monitoring program 10, the OS 20, and the business program 30.

FIG. 2 is a functional block diagram showing functions of the file restoration apparatus shown in FIG. In FIG.
Parts performing the same functions as those of the components shown in FIG. 1 are denoted by the same reference numerals.

This file restoring device is a computer 1
, File monitoring program 10, OS 20, process information storage area 71, file information storage area 72
And a backup area 73.

The file monitoring program 10 includes a process information obtaining unit 11, a file information obtaining unit 12, a backup unit 13, and a file restoring unit 14.

The file monitoring program 10 has a function of making a file update process executable when the process of the file update process has transitioned to an execution state, a function of backing up a file to be updated, After the backup, a function of making the process of the file update process in the executable state into the execution state is provided.

The process information obtaining section 11 obtains the process information of the business program 30 through the OS 20, stores it in the process information storage area 71, and stores the file information obtained when the business program 30 performs file processing and the file information of the business program 30. It has a function to link with process information.

The file information acquisition unit 12 has a function of acquiring file information on a file to be processed (updated) by the business program 30 from the OS 20 and storing the file information in the file information storage area 72.

The backup unit 13 stores the business program 3
0 has a function of creating (copying) a backup file of the update target file 31 in the backup area 73 based on file information when performing file processing.

The file restoring unit 14 stores the business program 3
0 is abnormally terminated, a restoration function for restoring (copying) a backup file based on the process information and the file information of the business program 30, and a process information storage area 7 after the file is restored (file 32).
1. It has a deletion function of deleting (clearing) each stored content of the file information storage area 72 and the backup area 73.

Further, in addition to the above-described restoring function, the file restoring unit 14 refers to information such as a log file and a checkpoint managed by a database management system (DBMS) (not shown) when restoring a file, and performs rollback. The file is restored by (backward return) or roll forward (forward / backward return).

The process information storage area 71 is allocated, for example, in the storage area 50 of the memory 3 shown in FIG. In this area 71, items P1, P as shown in FIG.
The process information is stored in the form of a table having a data structure having two.

In the item P1, identification information for identifying a process (hereinafter referred to as a process ID) is registered, and in the item P2, information indicating a process state (for example, information indicating an execution state) is registered. Is done.

The file information storage area 72 is allocated, for example, in the storage area 50 of the memory 3 shown in FIG. In this area 72, file information is stored in a table format having a data structure having items F1 to F4 as shown in FIG.

In the item F1, a higher-order ID, that is, a process ID of a process for executing the processing of the file is registered, and in the items F2 to F4, a file attribute, ie, a file attribute, is registered.
Information indicating each of a file name, a storage area, and a size is registered.

The backup area 73 is allocated to, for example, the secondary storage device 2 shown in FIG.

Regarding the file restoration processing by the file monitoring program in the file restoration apparatus having such a configuration,
This will be described with reference to FIGS. FIG. 5 is a flowchart showing this file restoration processing operation, and FIGS. 6 to 15 are diagrams for explaining the file restoration processing process.

When the computer 20 activates and executes the OS 20 and the file monitoring program 10 (see FIG. 6), the file monitoring program 10 always refers to the process information managed by the OS 20 (FIG. 7, X1).
(See step S101).

The business program 3 by the computer 1
0 is started (see X2 in FIG. 8), the process information acquisition unit 11 of the file monitoring program 10 processes the process information of the business program 30 (for example, process ID = 11).
5) is acquired from the OS 20 (see X3 in FIG. 8) (step S102), and this process information is stored in the process information storage area 71 (see X4 in FIG. 8) (step S10).
3).

When the business program 30 issues a file update command (see FIG. 9, X5) (step S104)
Process information acquisition unit 11 of file monitoring program 10
Recognizes that the file update process has been performed on the file 31 from the business program 30 based on the process information obtained by constantly referring to the OS 20 (see X6 in FIG. 9) (step S105). this is,
This means that the file update process has transitioned to the execution state.

Then, the file monitoring program 10
Immediately, a WAIT instruction is issued to the file update process (see X7 in FIG. 9) (step S106), and the file update process is temporarily suspended. this is,
This means that the file update process has transitioned from the execution state to the executable state.

Next, the file monitoring program 10 matches the process ID (process ID = 115) of the business program 30 that has issued the file update process with the process ID stored in the process information storage area 71 (FIG. 10, X8) (Step S107).

If the two process IDs match in step S107, the file information acquisition unit 12 of the file monitoring program 10 acquires file information on the file to be updated from the OS 20 (step S107).
108).

Here, when the file information is “upper ID = 1”
15, "file name = A: \ fileini, storage area = D: \ bk1", the file information acquisition unit 12 stores the file information in the file information storage area 72 (FIG. 1).
0, X9) (step S109).

When step S109 is completed, the backup unit 13 of the file monitoring program 10 backs up (copies) the file 31 to be updated to the backup area 73 (see X10 in FIG. 11) (step S109).
110).

After that, the file monitoring program 10
The WAIT instruction issued in step S106 is released (see X11 in FIG. 12).

When the WAIT instruction is released, the file 31 is updated by executing the file update process of the business program 30 (see X12 in FIG. 12) (step S112). This means that the process of the file update process in the executable state transits to the execution state and executes the file update process.

During the file update processing or at the end of the update processing in step S112, the business program 30
Abnormal termination due to some cause (for example, a failure such as a file update processing error or a system failure) (FIG. 13, X1
3) (step S113), the process information acquisition unit 11 of the file monitoring program 10 acquires the process information (for example, process ID = 115) of the abnormally terminated business program 30 from the OS 20 (FIG. 13, X1).
4) (step S114), and matches the acquired process information with the process information stored in the process information storage area 71 (see X15 in FIG. 13).
(Step S115).

When these pieces of process information match (when the process IDs match at 115), the file acquisition unit 12 of the file monitoring program 10 performs an update process from the file information storage area 72 by the abnormally terminated business program 30. File information of the file 31 to be updated (that is, “upper ID = 115, file name = A: \
fileini, save area = D: \ bk1 ”) (Fig. 13, X
16 (step S116).

The file restoring unit 14 of the file monitoring program 10 restores the file backed up in the backup area 73 to the original storage area (storage area) based on the file information acquired in step S116 (see X17 in FIG. 14). = D: \ bk1) (Fig. 14,
X18) (Step S117).

When restoring the file, the file restoring unit 14 restores the backup file based on the rollback when a failure occurs during the update process for the file to be updated, while the update process is performed. If a failure occurs after the update processing of the target file is completed, the updated file is restored based on the roll forward.

The file restoring unit 14 that has completed step S117 deletes the process information of the business program 30 that has ended abnormally and the file information of the file 31 to be updated (see FIG. 15, X19A, X19).
19B) (steps S118 and S119), the files that have been backed up are also deleted (FIG. 15, X20).
(See step S120).

Next, a specific example of the file restoration process will be described with reference to FIG.
This will be described with reference to FIG.

When the process of the file update process transits to the execution state, the file monitoring program 10
Then, after issuing the WAIT instruction to the process, at time t
The file to be updated is backed up during a period from time 2 to time t3.

After the backup is completed, when the file monitoring program 10 releases the WAIT instruction at time t4, the file update process starts updating the file to be updated from time t5.

When the database management system (not shown) issues a checkpoint at time t6 and the business program terminates abnormally at time t7, the file monitoring program 10
Restore files.

On the other hand, a database management system (not shown) issues a checkpoint at time t6 and
At 8, the file update process by the file update process ends, and at time t9, if the business program ends abnormally, the file monitoring program 10 restores the file based on the roll forward.

As described above, according to this embodiment, the file monitoring program 10 grasps the operation status of the process (business program) based on the acquired process information, and performs the file processing by the business program. If (update processing) is performed, the file to be updated can be backed up (copied) to the backup area. Therefore, since only the file to be updated is backed up, the storage medium resources for the backup can be effectively used.

The file monitoring program 10 can restore the backed up file to the original area when the business program ends abnormally.

Further, the file monitoring program 10
Business programs and file information can be dynamically acquired through the OS 20. For this reason, there is no need to make a file monitoring program entry a business program or a file to be backed up in advance. Therefore, there is no need for the user to be aware of the business programs and files that the user wants to execute the backup process.

In this embodiment, the case where the relationship between the file monitoring program and the business program is 1: 1 has been described, but this may be 1: a plurality (n). In other words, since a plurality of process information storage areas for storing process information relating to the processes of the business programs are prepared, even if there are a plurality of business programs, processing can be performed by one file monitoring program 10. it can.

The file monitoring program 10 and the OS
Although the function of the file monitoring program 10 may be incorporated in the OS 20, the function of the file monitoring program 10 may be incorporated in the OS 20. That is, the function of the file monitoring program may be provided in the OS.

Further, the file monitoring program 10 issues a WAIT instruction to the file update process,
Although the update process is interrupted, this may be performed as follows.

That is, the priority of the file monitoring program 10 is set higher than the priority of the file update process, and when the process transits to the execution state, the execution is interrupted, and The processing by the monitoring program may be preferentially executed.

Therefore, after the file monitoring program executes the process information matching, the acquisition and storage of the file information, the file update process can be executed to update the file.

In this embodiment, the file monitoring program 10 dynamically recognizes the business program based on the process information.
The following may be performed. That is, when the target business program is determined, that is, when the file for which the file processing status is to be monitored is determined by the file monitoring program, information such as the business program name is monitored by the file monitoring program. The program may be dynamically or statically entered.

Further, in this embodiment, only one file is backed up. However, this may be performed as follows.

That is, a plurality of files to be updated that are related to each other may be backed up.

For example, there is a product sales file that records the number of sales for each product and a product inventory file that records the number of stocks for each product, and when the number of sales for each product at a predetermined time is determined. And the number of stocks is also determined. In this example, when the content of the product sales file is updated, the product inventory file is also updated.

In this case, for example, file information relating to each of a plurality of files to be updated (product sales file, product stock file) is stored in the file monitoring program in accordance with the file update process (process information). The merchandise sales file and the merchandise inventory file are stored in the information storage area and are backed up.

If the business program ends abnormally while updating the contents of the product sales file, the backed up product sales file and product inventory file are restored based on the process information and the file information (that is, the product inventory file is restored). , Rolled back).

After the contents of the merchandise sales file are updated, if the business program ends abnormally while the merchandise inventory file is being updated, the merchandise sales file is restored by roll-forward and the merchandise inventory file is restored by rollback. Is done.

As described above, according to this embodiment, when a plurality of files have a relationship, the relationship can be maintained. This means that the file monitoring program backs up and restores only the files that have been processed by the business program, and does not affect any files that have not been processed.

Further, in this embodiment, the program for executing each procedure of the above processing is a CD-R
It may be stored in a computer-readable recording medium such as OM and distributed.

[0087]

As described above, according to the present invention,
Only the file to be updated can be backed up and the backed up file can be restored based on the process information and the file information. In addition, storage medium resources can be used effectively.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a file restoration device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram showing functions of the file restoration device shown in FIG.

FIG. 3 is a diagram showing a data structure of process information.

FIG. 4 is a diagram showing a data structure of file information.

FIG. 5 is a flowchart showing a file restoration processing operation by a file monitoring program in the file restoration device shown in FIG. 1;

FIG. 6 is an explanatory diagram for explaining a file restoration process;

FIG. 7 is an explanatory diagram for explaining a file restoration process;

FIG. 8 is an explanatory diagram for explaining a file restoration process;

FIG. 9 is an explanatory diagram for explaining a file restoration process;

FIG. 10 is an explanatory diagram for explaining a file restoration process;

FIG. 11 is an explanatory diagram for explaining a file restoration process;

FIG. 12 is an explanatory diagram for explaining a file restoration process;

FIG. 13 is an explanatory diagram for explaining a file restoration process;

FIG. 14 is an explanatory diagram for explaining a file restoration process;

FIG. 15 is an explanatory diagram for explaining a file restoration process;

FIG. 16 is an explanatory diagram for describing a specific example of a file restoration process.

[Explanation of symbols]

 Reference Signs List 1 computer 2 secondary storage device 3 memory 10 file monitoring program 11 process information acquisition unit 12 file information acquisition unit 13 backup unit 14 file restoration unit 20 operating system 50 storage area 60 storage area 71 process information storage area 72 file information storage area 73 Backup area

Claims (9)

[Claims] 1. A management means for managing process information on a predetermined process in an application program and file information on a file to be processed, and managing the process information on a file update process in an application program being executed. Means for acquiring process information obtained from the means, first state changing means for making the file update process which has transitioned to the execution state executable, and file information relating to a file to be updated by the file update process File information obtaining means for obtaining from the management means, backup means for backing up the update processing target file, and when the update processing target file is backed up, the executable process is set to the execution state. Do 2
A status change unit, and when a failure occurs, the file backed up by the backup unit based on the process information acquired by the process information acquisition unit and the file information acquired by the file information acquisition unit. A file restoration device, comprising: file restoration means for restoring. 2. The file restoration apparatus according to claim 1, wherein said file information acquisition means acquires file information on a plurality of files to be updated that are related to each other. 3. A process information storage means for storing the process information obtained by the process information obtaining means, a file information storage means for storing the file information obtained by the file information obtaining means, and a backup by the backup means. Backup file storage means for storing a file, and deletion means for deleting each stored content of the process information storage means, the file information storage means, and the backup file storage means after the file is restored by the file restoration means, The file restoration device according to claim 1, further comprising: 4. A process information acquiring means for acquiring process information relating to a file update process in an application program being executed from an operating system, and a first state change for making the process which has transitioned to an executable state executable. Means, file information about the file to be updated, file information acquisition means for acquiring from the operating system, backup means for backing up the file to be updated, and when the file to be updated is backed up,
A second state changing unit that sets the process in an executable state to an execution state; a process information acquired by the process information acquiring unit when a failure occurs; and a file information acquired by the file information acquiring unit. And a file restoring means for restoring a file backed up by the backup means on the basis of the file restoring means. 5. A management step of managing process information on a predetermined process in an application program and file information on a file to be processed, and managing the process information on a file update process in the running application program. A process information acquisition step of acquiring from the information content managed in the step, a first state change step of making the file update process that has transitioned to the execution state an executable state, and file information relating to a file to be updated A file information acquisition step of acquiring from the information content managed in the management step, a backup step of backing up the file to be updated, and an actual step when the file to be updated is backed up. Second to the state of the process execution state
State change step, when a failure occurs, based on the process information obtained in the process information obtaining step and the file information obtained in the file information obtaining step, the file backed up by the backup step A file restoration method, comprising: restoring a file. 6. A management function for managing process information on a predetermined process in an application program and file information on a file to be processed, and managing the process information on a file update process in an application program being executed. A process information acquisition function that acquires from the information content managed in the step, a first state change function that makes the file update process that has transitioned to the execution state an executable state, and file information about a file to be updated A file information acquisition function for acquiring from the information content managed in the management step, a backup function for backing up the file to be updated, and an executable state when the file to be updated is backed up The pro The second for a scan to run state
State change function, and when a failure occurs, based on the process information obtained by the process information obtaining function and the file information obtained by the file information obtaining function, the file backed up by the backup function is A computer-readable recording medium for recording a file restoration function for restoring, and a program for executing the function. 7. A process management apparatus for managing a state of a process of a file update process in an application program, wherein when the process transits to an execution state, a first state change unit that sets the process to an executable state; A process management apparatus comprising: a backup unit that backs up a file to be updated; and a second state change unit that puts the process in an executable state into an execution state after the file is backed up. 8. A process management method for managing a state of a process of a file update process in an application program being executed, wherein a first state change that sets the process to an executable state when the process transits to an executable state. A backup step of backing up a file to be updated, and a second state change step of bringing the process in an executable state into an execution state after the file has been backed up. Management method. 9. A first state change step of making a file update process in an application program being executed into an executable state when the process changes to an execution state, and a backup for backing up a file to be updated. And a second state change step of, after the file has been backed up, bringing the process in an executable state into an execution state, recording a program for executing the process.