JPH10240594A - Data file monitor system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evade the destruction of a system area, an increase in the load on other processes, and artificial misoperation by monitoring a data file which is always accessed and possibly becomes infinitely large and automatically performing cyclic generation management. SOLUTION: A current generation information acquiring means 32 reads current generation information on a data file 12 out of a generation management information master 11. A size monitoring means 33 checks the size of the data file 12 having a size trigger as an object of generation management and a time information confirming means 34 confirms the system data and time of the data file 12 which has a temporal trigger. Once trigger generation is detected, a notification transmitting means 35 sends a report indicating that a data file 12 is released to a process 40 which is accessing the data file 12. Then a file name changing means 37 of the file monitoring means 30 changes the name of the object data file 12 according to a name changing system.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data file monitoring system in an information processing system, and more particularly to a data file monitoring system that monitors data files and automatically performs cyclic generation management.

[0002]

2. Description of the Related Art Conventionally, in a data file monitoring system of this type, a data file having a large size is managed by deleting the data file by an artificial operation or saving the data file to another storage device. . Conventionally, an example of such a management method is disclosed in
No. 9239.

The generation management system described in Japanese Patent Application Laid-Open No. Hei 1-199239 performs generation management by recording generation information in a source program in accordance with a user's instruction.

[0004] In the file generation management system disclosed in Japanese Patent Application Laid-Open No. 533171, a technique is described in which, when there is input data that goes back in the past, a file of a past generation is automatically used.

[0005]

As described above, the conventional data file monitoring method has a high degree of dependence on artificial operations. If large data is written, or if files are not deleted or saved to other storage devices, the usage rate of the magnetic disk will increase, adversely affecting other processes and reducing the operating system area. There was a problem that the system could go down due to infringement.

Conventionally, since generation management is performed in units of volumes or partitions of a storage disk, there has been a problem that management for several generations of unnecessary files is performed.

An object of the present invention is to monitor a data file which is always accessed and may be endlessly large, and to automatically perform cyclic generation management, thereby destructing a system area and increasing a load on other processing. Another object of the present invention is to provide a data file monitoring system capable of avoiding human error in operation.

Another object of the present invention is to set a generation management for each data file, thereby managing a required file only for a required generation, thereby enabling a data file monitoring to efficiently use a magnetic disk. It is to provide a system.

Still another object of the present invention is to set generation management in detail for each data file,
An object of the present invention is to provide a data file monitoring system that enables generation management according to the attribute of the data file and improves the quality of the data file.

[0010]

A data file monitoring system according to the present invention that achieves the above object is based on a generation management information master storing data file generation management information and the generation management information of the generation management information master. File monitoring means for changing the generation of the data file by using the generation management information. The file monitoring means obtains a generation management method of the data file from the generation management information. Means for acquiring information; size monitoring means for monitoring the size of the data file to determine the occurrence of a generation change trigger based on the size; confirming the date and time of the system of the data file; and triggering the generation change by time. And a time information confirmation stage for determining occurrence of the Notification means for notifying a process accessing the generated data file of a release request for the data file; generation calculation means for calculating the next generation number of the data file; Name changing means for changing the file name of the data file, new file creating means for newly creating an original data file lost by the change of the file name, and updating means for updating generation management information. It is characterized by having.

According to the data file monitoring system of the present invention, the generation management information master includes a generation management method for each data file to be managed, which indicates a file name and a generation change based on size or time. , The total number of generations, the current generation, the content of the trigger based on the size or time, and the name of the process that accesses the data file.

According to the data file monitoring system of the present invention, the file name changing means appends the current number of generations obtained from the generation management information master to the end of the current file name, thereby obtaining the file name. It is characterized in that the file name of the data file is changed.

According to the data file monitoring system of the present invention, when the generation of the data file is changed, the updating means updates the generation management information master according to the number of generations calculated by the generation calculating means. And updating the current generation information of the corresponding data file.

[0014]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a configuration of a data file monitoring system according to an embodiment of the present invention.

Referring to FIG. 1, the present data file monitoring system includes, in a magnetic storage device 10, a generation management information master 11, a current generation data file 12 to be subjected to generation management, and a data file 13 before the current generation. Is stored,
The target data file 12 is stored in the central processing unit 20.
Management method obtaining means 31 for obtaining the current generation management method, current generation information obtaining means 32 for obtaining the current generation information of the data file 12, size monitoring means 33 for monitoring the size of a file having a size trigger, Time information confirming means 34 for monitoring the system time of a data file having a nature trigger, notification transmitting means 35 for sending a file release notice to a process accessing the data file, generation calculating means 36 for calculating the generation, File name changing means 37 for changing the file name of a file, and new file creating means 3 for newly creating an original data file
8 and a file monitoring means 30 comprising a master updating means 39 for updating the generation management information master 11. As a means for changing the name of a data file, a cyclic generation management method is adopted.

Next, referring to FIG. 2, the generation management information master 11 includes a data file name column 51 storing a file name to be subjected to generation management, and a generation management method column storing a generation management method of the file. 52, a total generation number column 53 storing information on how many generations are to be managed, a current generation column 54 storing the current generation number, and an evacuation trigger column 55 storing a file generation change trigger. And a related application name column 56 storing the name of the process accessing the file.

Next, the operation of the data file monitoring system according to the present embodiment will be described with reference to FIGS. 3, 4, 5 and 6.
This will be described in detail with reference to FIG.

When the file monitoring means 30 is activated according to the flowchart of FIG.
Then, the generation management information master 11 is read, and the information of the generation management method for each data file 12 to be subjected to generation management is acquired from the generation management method column 52 (step 301). That is, the data file 12 having a size trigger that changes generations when the size reaches a certain size,
Information on whether the data file 12 has a time trigger that changes generations after a certain period has elapsed is acquired.

The current generation information acquisition means 32 reads from the generation management information master 11 current generation information indicating the current generation of the data file 12 to be changed in generation (step 302).

The file monitoring means 30 checks at any time whether a generation change trigger has occurred. First, the size monitoring unit 33 checks the size of the data file 12 having the size trigger to be generation-managed (step 303). Further, the system date and time of the data file 12 having the time trigger is confirmed by the time information confirmation means 34 (step 304).

Thereafter, it is determined whether a generation change trigger of the target data file 12 having the size trigger to be generation-managed or a generation change trigger of the target data file 12 having the time trigger has occurred (step 305). ).

When the occurrence of a trigger is detected in any of the above cases, the notification transmitting means 35 transmits a notification to release the data file 12 to the process 40 accessing the data file 12 (step 306). ). The process 40 having received the notification closes and releases the target data file 12 (step 30).
7).

Thereafter, the file name changing means 37 of the file monitoring means 30 changes the name of the target data file 12 based on the name changing method shown in FIG. As shown in FIG. 6, the name is changed cyclically. If a file having the same name exists at the file name change destination, the file with the same name is deleted therefrom. After the file name is changed, a new data file 12 is created in which the data file 12 having the original file name has been lost (step 3).
08). The process using the data file now reopens the data file (step 3
09). Then, the next generation number is calculated by the generation calculating means 36, and the generation management information master 11 is updated by the master updating means 39 (step 310). Thereafter, the occurrence of a trigger is repeatedly checked.

[0024]

Next, preferred embodiments of the present invention will be specifically described.

In FIG. 1, inside the central processing unit 20, a file monitoring means 30 and an A process 40 are operating. The A process 40 is a business process, and always writes data to the data file 12. Therefore, if this writing process is left unattended, the data file 12 becomes infinitely large. The file monitoring unit 30 acquires the generation management method of each data file 12 from the generation management information master 11 and executes the generation management of the data file 12.

The generation management information master 11 shown in FIG. 2 has one record of management information for each file. Here, the data files afile, bfile, cfile
There are management information records for e and dfile. The data file "file" among the data files 12 will be described. This data file is a file managed for three generations in total, and is currently the second generation. Further, it is set that the file monitoring means 30 performs generation management of the data file "file" every day at "24:00". That is, the data file “file” has a temporal trigger. The only related application accessing this data file afile is the A process 40.

The data file bfile will be described. This data file is a file managed for four generations in total, and is the third generation at present. When the size exceeds 1 Mbyte, the file monitoring means 30
Are set to perform generation management. That is, the data file bfile has a size trigger.

The generation management operation will be specifically described with reference to FIGS. Here, the A process 40 has the data file a
It is assumed that the file is being accessed. The file monitoring means 30 indicates from the generation management information master 11 that this data file afile is a data file for which generation management is to be performed in a time system (has a temporal trigger), the total number of generations is “3”, and the current generation is 2 The information that the generation is changed at 24:00 every day at the generation is acquired.

Therefore, the file monitoring means 30 constantly monitors the time, and when the time reaches 24:00, recognizes that a trigger has occurred for this data file afile and requests the A process 40 to release the data file. To send notifications. When the process A receives the notification from the file monitoring unit 30, the process A
Close e.

Thereafter, the file monitoring means 30 changes the file name of the data file "file" and changes the file name to "afile".
The data file named “afile” no longer exists, so a new data file named “afile” is created.

The A process 40 opens the new data file "file" and starts access. Since the file monitoring means 30 is the second generation at present, the next generation change is calculated to be the third generation, and this generation “3” is registered in the current generation column 54 of the generation management information master 11. As a result of the calculation, when the total number of generations is exceeded, the process returns to the first generation and is registered in the generation management information master 11. For example, the next generation of the data file dfile is “1”. As described above, cyclic generation management can be realized.

A method for changing the file name will be described with reference to FIG. For example, as described in the above-described example, the file monitoring unit 30 uses the information acquired from the generation management information master 11 based on the data file afile of the second generation.
When the file name of e is changed, the number of generations “2” is added to the end of the current file name, thereby obtaining a data file “file2”.

When the next generation change occurs, the data file is named file3. After the file name is changed, the data file “file” itself disappears. Therefore, the file monitoring unit 30 newly creates a data file with the file name “afile”.

A cyclic generation management system will be described with reference to FIG. For example, a data file a of three generations in total
Using the example of the file, as a result of performing the generation change with the first, second, and third generations, the next generation becomes the first generation by the above-described generation calculation method. However, since the first generation data file “file1” already exists, this file is deleted and a new first generation file is created. The next generation will also have the existing data file afile
2 is deleted, and a new data file afile2 is created. With this method, data files of the past three generations are always stored.

Although the present invention has been described with reference to the preferred embodiments and examples, the present invention is not necessarily limited to the contents of the above embodiments and examples.

[0036]

According to the data file monitoring system of the present invention as described above, the following effects can be obtained.

First, since the data file monitoring means constantly monitors the data file and performs cyclic generation management, the capacity of the data file increases endlessly, and phenomena such as infringement or destruction of the system area can be prevented. Can be prevented.

Second, by having management information for each data file, it is possible to manage only necessary files for the required number of generations, rather than to manage generations collectively on a volume basis or the like. Can save money.

Third, since the data file is finely managed, generation management can be performed according to the attribute of the data file, so that the quality of the generation-managed data file is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a data file monitoring system according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a configuration example of a generation management information master according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating processing of a generation monitoring unit according to the embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a flow of a generation management process.

FIG. 5 is an explanatory diagram showing processing of a name change method.

FIG. 6 is a diagram showing processing of a cyclic generation management method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Magnetic storage device 11 Generation management information master 12 Data file 20 Central processing unit 30 File monitoring means 31 Management method acquisition means 32 Current generation information acquisition means 33 Size monitoring means 34 Time information confirmation means 35 Notification transmission means 36 Generation calculation means 37 File Name change unit 38 New file creation unit 39 Master update unit 40 Process 51 Data file name column 52 Generation management method column 53 Total generation number column 54 Current generation column 55 Save trigger column 56 Related application name column

Claims (4)

[Claims] 1. A file management system comprising: a generation management information master storing generation management information of a data file; and file monitoring means for changing the generation of the data file based on the generation management information of the generation management information master. Means for obtaining a method for performing generation management of the data file from the generation management information; means for obtaining current generation information of the data file from the generation management information; and monitoring the size of the data file A size monitoring means for determining the occurrence of a generation change trigger based on size; a time information confirmation stage for checking the date and time of the data file system to determine the generation of a generation change trigger based on time; In the process accessing the data file where the generation change trigger by time occurred Notification means for notifying a request to release the data file, generation calculation means for calculating the next generation number of the data file, and a file name for changing a file name of the data file according to the calculated generation number A data file monitoring system comprising: a change unit; a new file creation unit that newly creates an original data file lost due to the change of the file name; and an update unit that updates generation management information. 2. The generation management information master includes, for each data file to be managed, a file name, a generation management method indicating whether generation is to be changed by size or time, a total number of generations, a current generation, a size or 2. The method according to claim 1, wherein the content of the time-based trigger and a process name for accessing the data file are stored.
2. A data file monitoring system according to item 1. 3. The file name change unit changes the file name of the data file by adding the current generation number acquired from a generation management information master to the end of a current file name. The data file monitoring system according to claim 1. 4. When the generation change of the data file is performed, the updating means updates the current generation information of the data file corresponding to the generation management information master according to the number of generations calculated by the generation calculating means. The data file monitoring system according to claim 1, wherein: