JPH0235536A - Update processing system for on-line file index part - Google Patents

Abstract

PURPOSE:To carry on processing without interrupting nor stopping a system for updating or switching by updating information with a program which is different from that in operation and dedicated to the updating and incorporating the updated information in a stand-by index file. CONSTITUTION:Index information is updated with the index information updating program different from the program in operation as index information update processing. Then the information which is updated is incorporated in the stand-by index file with an index file incorporating program in operation as a new index information incorporating processing. Since this processing is performed with the program different from the program in operation for handling files and data, no direct influence is exerted. Then, the program in operation switches an index file in operation and a stand-by file as index file switching processing. The switching is performed only by replacing index file control information.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is used in an online processing system to update an index section of a file in which management information of processing data is fixed. Further, the present invention can be used not only for the index section but also for updating table files in business processing.

〔overview〕

The present invention is an online file index update processing method in an online system where data management information (index part) is fixed, in which the data management information is configured as an independent index file,
By updating information using an update-only program, incorporating the updated information into a backup index file, and replacing the active index file information with the backup index file information, it is possible to avoid interrupting or interrupting the system or its processing for updating or switching. It is designed so that it does not require complicated procedures or time to continue data without stopping.

[Conventional technology]

Conventionally, this type of update processing has been handled by temporarily stopping the system or its processing and creating or reorganizing new management information again.

Furthermore, continuation of data required complicated procedures and time.

[Problem that the invention seeks to solve]

In the conventional method described above, when a major change occurs in data management information, it is necessary to temporarily interrupt the running system or its processing in order to update it.
It also has fatal drawbacks, such as requiring complicated procedures and time to maintain data continuity.

The present invention aims to eliminate these drawbacks and provide a method that does not require complicated procedures or time to continue data without interrupting or stopping the system or its processing for updating or switching. purpose.

[Means for solving problems]

The present invention provides an online file index information update processing method for an online processing system in which information for managing data is fixed, and is updated when a significant change due to addition or deletion of information for managing data occurs. It is characterized in that processing is executed by a program different from the running program, updated information is stored in an index file different from the running index file, and then the index files are replaced.

[Effect]

Data management information (index section) is configured as individual index files, and information is updated by an update-only program that is separate from the running program. The updated information is incorporated into a backup index file separate from the active index file, and then the active index file information and the backup index file information in the index file management information are replaced to switch the index file.

As a result, processing can be executed without interrupting or stopping the system for updating or switching, and without requiring complicated procedures or time to continue data.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

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

As shown in FIG. 1, the processing method of the embodiment of the present invention is to configure data management information (index section) as individual index files, and to update the information using a program (update section) that is separate from the running program. This is done using a special program). The updated information is incorporated into a backup index file separate from the active index file, and then the index file is switched by replacing the active index file information and the backup index file information in the index file management information.

FIG. 2 shows the update processing procedure according to the embodiment of the present invention.
The processes are executed in the order of index information update process (step 1), new index information incorporation process (step 2), and index file switching process (step 3).

First, as shown in FIG. 3, in index information update processing (step 1), index information is updated (added, deleted, etc.) using an index information update program that is different from the currently running program.

Next, as a new index information incorporation process (step 2), as shown in FIG. 4, the updated information is incorporated into a preliminary index file by the index file incorporation program of the system in operation. This processing is performed in a separate program from the program that handles the files and data that is currently running, so it does not have any direct impact.

Subsequently, as an index file switching process (step 3), as shown in FIG. 5, the currently running index file and the spare index file are switched in the currently running program. This can be done instantaneously because it only requires replacing both pieces of information in the index file management information. The relationship between the files before and after switching is as shown in FIG. 6, and the updating of the index information is completed.

〔Effect of the invention〕

As explained above, according to the present invention, when the management information of processing data is fixed, there is no need to interrupt or stop for updating or switching regardless of the update information l in response to a significant change. This has the effect of not requiring complicated procedures or time to continue data. Furthermore, since updating of information is executed separately from the running program, there is an advantage that even if the updating method is complicated, it is easy to consider.

A diagram showing the relationship between files.

1... Index information update processing, 2... New index information incorporation processing, 3... Index file switching processing.

Claims (1)

[Claims] 1. In an online file index update processing method in an online processing system in which information for managing data is fixed, significant changes occur due to addition or deletion of information for managing data. When this happens, the update process is executed by a program different from the running program, the updated information is stored in an index file different from the running index file, and the index file is then replaced. Online file index update processing method.