JPH04256141A - On-line processing system - Google Patents

Abstract

PURPOSE:To perform the batch processing without interrupting the on-line processing in en on-line processing system applying a duplex computer system consisting of a main system and a sub-system. CONSTITUTION:If a sub-system performs no batch processing during the on-line processing of a main system, the updated information obtained from the on-line processing is successively transferred to the sub-system from the main system. Based on this updated information, the synchronization is secured between both systems. When the sub-system starts the batch processing, the updated information obtained from the on-line processing is stored in the main system. This stored information is transferred to the sub-system when the batch processing is complete. Then the synchronization is recovered between both systems based on the updated information.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to online processing systems. In recent years, with the spread of online processing using computer systems, there has been a demand for extended operating hours and even for round-the-clock operation.

0002

[Prior Art] Online processing is performed by updating a master file built into a computer system in real time based on data sent from a terminal device, so the master file can be used for other purposes during online processing. It cannot be used.

However, even in online processing systems, it is necessary to perform batch processing such as batch printing of master file contents or maintenance of master files at regular intervals, and in this case, it is necessary to temporarily suspend online processing. It won't happen.

[0004] Therefore, in order to shorten the interruption period of online processing, a method is used in which the master files are duplicated, and while online processing is performed using one master file, batch processing is performed using the other master file. ing. However, in the conventional method, after batch processing is completed, it is necessary to temporarily interrupt online processing in order to synchronize both master files, making it impossible to perform online processing 24/7.

[0005]

[Problems to be Solved by the Invention] Conventionally, therefore, the suspension period has been set at a time that does not affect online processing operations as much as possible. Therefore, the interruption period is limited to nighttime, holidays, etc., which poses a problem of placing a heavy burden on the worker.

[0006] Accordingly, an object of the present invention is to perform batch processing without interrupting online processing.

[0007]

[Means for solving the problem] The solution to the above problem is an online processing method in which online processing is performed 24/7 by a redundant computer system consisting of a main system and a sub system, and each of the main system and sub system has a master system. Files 1a, 1b, update files 2a, 2
b. Master file 1 on the main system side that has accumulated files 3a and 3b and was generated during online processing on the main system side.
The update information of a is written to the main system side update file 2a, and if batch processing is not performed on the secondary system side, the contents of the main system side update file 2a are sent to the secondary system side update file 2b, and On the side, the secondary system side master file 1b is updated using the secondary system side update file 2b to maintain synchronization with the main system side master file 1a, and batch processing is started on the secondary system side during the above online processing. Then, the contents of the main system side update file 2a are accumulated in the main system side storage file 3a, and when the above batch processing is completed,
The contents of the main system side storage file 3a are transferred to the secondary system side storage file 3b, and update information of the main system side master file 1a generated by online processing after the above batch processing is completed is transferred via the main system side update file 2a. Transfer to the secondary system side update file 2b,
On the secondary system side, the above secondary system side update file 2b
This is achieved by an online processing method characterized in that the synchronization with the main system master file 1a is restored by updating the secondary system master file 1b using the secondary system storage file 3b.

[0008]

[Operation] In the present invention, update information generated during online processing on the main system side is sequentially transferred to the main system side update file 2a.
write to. If batch processing is not being performed on the secondary system side during online processing, the contents of this main system side update file 2a are transferred to the secondary system side, and the secondary system side uses this to update the master file 1b. The content is updated to maintain the same content as the master file 1a on the main system side.

[0009] When batch processing is started on the secondary system side during online processing on the main system side, the transfer of update information to the secondary system side is interrupted and the main system and the secondary system are separated. The secondary system can concentrate on batch processing.

On the other hand, on the main system side, online processing continues regardless of whether or not batch processing is performed, and update information generated thereby is accumulated in the storage file 3a on the main system side.

When the batch processing is completed on the secondary system side, the update information accumulated in the main system side storage file 3a through online processing during this batch processing period is sent to the storage file 3b on the secondary system side, and the above batch processing is completed. After completion, the updated information is sequentially transferred to the secondary system side as before. On the secondary system side, the master file 1b is updated with this information sent from the main system side, and the master file 1a on the main system side is updated.
The content identity can be restored.

As described above, according to the present invention, it is possible to maintain the same content of the master files of the main system and the subsystem regardless of whether or not batch processing is performed, so that online processing can be executed without interruption. .

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention, which consists of a main system and a subsystem having the same configuration. In the same figure, 1a and 1b are master files, 2a and 2b
are update files, 3a and 3b are storage files, 4a and 4
b is a central processing unit, 5a, 5b are communication control devices, 6, 7
is a terminal device. FIG. 2 is a flow diagram illustrating an embodiment of the invention. Below, Figure 1
An embodiment of the present invention will be described with reference to FIG.

In this embodiment, as shown in FIG. 1, a large number of terminal devices 6 are connected to the central processing unit 4a on the main system side in order to perform online processing. The central processing unit 4a then executes online processing while updating the master file 1a with the data sent from the terminal device 6 (S1). The update contents of the master file 1a caused by this online processing are sequentially written to the update file 2a as update information (S2).

On the other hand, the operator instructs the central processing unit 4b via the terminal device 7 whether or not to perform batch processing on the subsystem side (S3). The central processing unit 4b sends an update information transfer command to the central processing unit 4a on the main system side via the communication control devices 5b and 5a when there is no batch processing, and sends an update information transfer inhibition command when there is batch processing. send.

The central processing unit 4a on the main system side sequentially transfers the contents of the update file 2a to the update file 2b on the subsystem side while the update information transfer command is being input (S4). The secondary system side central processing unit 4b is
The contents of the master file 1b are updated based on the update information of the update file 2b (S5). This keeps the contents of the master system master file 1a on the main system and the master file 1b on the secondary system the same.

When batch processing is performed on the subsystem side, an information transfer suppression command is sent to the central processing unit 1a on the main system side. In response to this command, the central processing unit 1a transfers the contents of the update file 2a to the storage file 3a (S6). This information transfer suppression command is input to the central processing unit 1a until batch processing is completed on the secondary system side, and during this time, updated information is not transferred to the secondary system side and batch processing is performed in a state separated from the main system. Can be done.

[0018] When the batch processing is completed, the information transfer inhibition command is switched to an information transfer command (S7). Next, the update information stored in the main system storage file 3a is transferred to the secondary system storage file 3b (S8).
. At the same time, the update information after the batch processing is completed is transferred again from the main system side update file 2a to the sub system side update file 2b (S9). The secondary system side central processing unit 4b updates the contents of the master file 1b using this information, and restores the sameness with the main system side master file 1a (S10).

In this embodiment, a method has been described in which batch processing is performed on the secondary system side while online processing is performed on the main system side. However, the secondary system side is not limited to batch processing, and can also perform work such as maintenance of hardware and software You can also do
In this case as well, after the work is completed, it is possible to restore synchronization of the master file without interrupting online processing.

[0020]

[Effects of the Invention] As described above, according to the present invention, batch processing, various types of maintenance, and database management can be performed without interrupting online processing, thereby expanding the field of use of online processing systems and improving reliability. It is useful for achieving this goal.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention;

FIG. 2 is a flow diagram illustrating an embodiment of the present invention;

[Explanation of symbols]

1a, 1b master file,
4a, 4b central processing unit, 2a, 2b update file,
5a, 5b communication control device, 3a, 3b storage file,
6,7 Terminal device,

Claims (1)

[Claims] Claim 1: An online processing method that performs online processing 24/7 using a redundant computer system consisting of a main system and a subsystem, wherein the main system and subsystem each have a master file (1a, 1b).
), update files (2a, 2b), accumulated files (
3a, 3b), and writes update information of the main system side master file (1a) generated during online processing on the main system side to the main system side update file (2a),
If batch processing is not performed on the secondary system,
The contents of the main system side update file (2a) are sent to the secondary system side update file (2b), and the secondary system side updates the secondary system side master file (1b) using the above secondary system side update file (2b). By doing this, synchronization with the master file (1a) on the main system side is maintained, and when batch processing is started on the sub system side during the above online processing, the contents of the update file (2a) on the main system side are stored on the main system side. Sequentially accumulate in file (3a),
When the above batch processing is completed, the contents of the main system storage file (3a) are transferred to the secondary system storage file (3a).
b) and the main system side master file (1
The update information in a) is transferred to the secondary system side update file (2b) via the main system side update file (2a), and on the secondary system side, the above mentioned secondary system side update file (2b) is transferred to the secondary system side update file (2b).
) and the secondary system side storage file (3b) to update the secondary system side master file (1b) to restore synchronization with the main system side master file (1a). method.