JPS63236146A - File updating system - Google Patents

Abstract

PURPOSE:To extremely shorten the service interrupted time by carrying out an access to a storing file memory for updating of files in a high-order device that occupies the greater part of the service interrupted time and the transfer of the new file data to a low-order device from a high-order device without stopping the on-line service. CONSTITUTION:When the replacement of files is started, the high-order device 1 reads the new file data to a main memory 2 from a file updating data storing file 4 and then stores the data temporarily in the file updating data storing area 8 of a main memory 6 of the low-order device 5. When said storage of the file data is through, a leading instruction is given to the device 5 from the device 1. Receiving this instruction, the device 5 stops temporarily the on-line service to transfer and store the new file data to an on-line operation area 7 from the area 8 of the memory 6 and restart the on-line service after a system rise.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a file update method in an online system such as a computer or an electronic exchange, and particularly relates to a file update method in an online system such as a computer or an electronic exchange, and in particular, the present invention relates to a file update method in an online system such as a computer or an electronic exchange. This relates to a file update method that is suitable when

[Conventional technology]

In conventional online systems where lower-level devices do not have file memory, new file data from the higher-level device is transferred and stored in the online operation area of the lower-level device's main memory without any awareness of file updates in the lower-level device. is now realized by the system startup function. One method is known, for example, as disclosed in Japanese Patent Laid-Open No. 60-261289.

In addition, as related to this type of method, Japanese Patent Application Laid-Open No. 60-1
There is a system disclosed in Japanese Patent No. 56822, but this is only for a system having a file memory in a lower-order device.

[Problem that the invention seeks to solve]

However, until now, the transfer and storage of new file data from the higher-level device as a management device to the lower-level device in charge of online services was performed directly in the online operation area of the lower-level device's main memory. To prevent malfunctions in lower-level devices, it is necessary to stop online services during this time. Therefore, there is a problem that the service interruption time becomes long and the online signal is discarded during that time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a file update method that allows file updates in lower-level devices to be performed with less service interruption time.

[Means for solving problems]

The above purpose is to transfer and store new file data from the host device to the file update data storage area as a non-online operation area in the main memory of the host device, and then update the file in response to a startup instruction from the host device. This is achieved by transferring and storing the data from the data storage area to the online operation area.

[Effect]

Compared to directly transferring and storing new file data from the host device to the online operation area of the main memory of the lower device, transferring and storing the new file data indirectly via the file update data storage area reduces service interruption time. It is said that it will be done. This involves accessing the file memory in which new file data is stored on the higher-level device, and storage of file update data from the higher-level device in the main memory of the lower device, which is the majority of service interruption time when updating files. This is because file data can be transferred and stored in the area even during online operation.

〔Example〕

The present invention will be explained below with reference to FIGS. 1 and 2.

First, the online system according to the present invention will be described. FIG. 2 shows an example of the system configuration. In this case, the host device 1 has a main memory 2 internally, and a file memory 3 for backing up operating files, a data storage file memory 4 for file updates, and a plurality of lower devices 5 outside. ing.

Further, the lower device 15 has a main memory 6 therein, and this main memory 6 consists of an online operation area 7 and a file update data storage area 8. New file data from the host device It1 is transferred and stored in the file update data storage area 8 during online service, and then further transferred and stored in the online operation area 7 while the online service is stopped. .

Now, FIG. 1 shows a general flow when updating a file, and the operation when updating a file can be explained as follows.

That is, when a file is updated in the host device 1, new file data is stored in the file update data storage file memory 4 from an external storage device such as MIll. When a file update is started, the higher-level device 1 reads new file data from the file update data storage file memory 4 to the main memory 2, and then reads the new file data to the lower-level device 5.
The data is temporarily transferred and stored in the file update data storage area 8 in the main memory 6 of the computer. In this case, since there are a plurality of lower-level devices 5, the information may be transferred and stored to all devices at once or sequentially.

Such transfer and storage is repeated until all data has been transferred and stored, and at the point when this is completed, the higher-level device i11 issues a start-up instruction to the lower-level device 1. When the lower-level device 1 receives the startup instruction, it temporarily stops the online service, transfers and stores the new file data from the file update data storage area 8 to the online operation area 7 in the main memory 6, and then restarts the system. This is where the online service begins.

〔Effect of the invention〕

As explained above, according to the present invention, when updating a file,
Accessing the storage file memory for file updates on the higher-level device and transferring new file data from the higher-level device to the lower-level device, which accounted for most of the service interruption time, can be done without stopping the online service. This has the effect of significantly reducing service interruption time when updating files.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a general flow at the time of file update according to the present invention, and FIG. 2 is a diagram showing a system configuration of an example of an online system according to the present invention. 1... Host device, 2.6... Main memory, 6...
・File memory for operation file backup, 4...
・File update data storage file memory, 5...
Lower device, 7... Online operation area, 8... Data storage area for file update. Agent Masu Burier Shōyo f! l! 95' IL21 Figure 2

Claims (1)

[Claims] 1. A file update method in an online system consisting of a higher-level device as a management device with file memory and multiple lower-level devices in charge of online services without file memory, in which the higher-level device updates new files from the file memory. The data is transferred and stored in the file update data storage area as a non-online operation area in the main memory of the lower-level device, while the new file data is stored in the lower-level device with the online service temporarily stopped by the start-up instruction from the above-mentioned higher-level device. A file update method characterized by transferring and storing data from a file update data storage area to an online operation area, then starting up the system and restarting online service.