JPS63158662A - Switching system for on-line processing system in plural computer systems - Google Patents

Abstract

PURPOSE:To automatically switch the on-line processing by providing the storing area for an input message in plural computer systems, storing the on-line processed input message on other computer system and mutually supervising a trouble stop. CONSTITUTION:A monitor means 6B supervises the state of a computer system 1A, when the system 1A is stopped due to the trouble, the trouble stop of the system 1A is informed to a message reading means 3B. The means 3B reads the input message stored in the message storing area 7B to process by a message processing means 2B and informs the completion of the processing to a line change over request means 13B. The means 13B requests the change over of a terminal equipment 12A to a line switching device 11A and the device 11A connects the device 12A to the computer system 1B. In such a way, the on-line processing system can be automatically switched.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a system in which an online processing system exists in a plurality of computer systems, and when one of the plurality of computer systems is stopped due to a failure,
The present invention relates to an online processing switching method in a multiple computer system that switches to a thin needle computer system and continues processing.

[Conventional technology]

Conventionally, the following four methods have been used as online processing switching methods in this type of multiple computer system.

The first is a method in which when one computer system in a multi-needle system is stopped due to a failure, the network line is switched and resources such as the F-database used in online processing are also switched at the same time.

An example of this first method will be explained with reference to FIG. One computer system is assumed to be an active computer system, and computer system IB is assumed to be a computer system that can take over the processing of one computer system when one computer system stops due to a failure. In this case, the terminal device 12A and the database 4 are connected to the computer system IA. When the computer system IA is stopped due to a failure, the line switching device 15 connects the Tamesue device 12A to the computer system IB. Furthermore, the database [4] is also imported into the computer system IBK. Thereafter, the input message input from the terminal device 12A is processed by the computer system 111.

The second method is to store input messages in a file or the like in a secondary storage medium, take over the messages therein, and switch networks after inputting and processing the messages.

An example of this second method will be explained with reference to FIG. Computer system IA is assumed to be an active computer system, and computer system IB is assumed to be a computer system that can take over the processing of computer system IA when computer system IA is stopped due to a failure. In this case, the terminal device 12A is connected to the computer system IA by the line switching device 11A.
Input messages processed by computer system IA are stored in secondary storage medium 16. When the computer system 11A is stopped due to a failure, the secondary storage medium 16 is connected to the computer system IB, and input messages are transferred to the computer system IB.
input and process it. Next, the terminal device 12A is connected to the computer system IB by the line switching device 11A. Thereafter, the input message input from the terminal device 3A is processed by the computer system IB.

The third method is a method in which the same message is sent to multiple computer systems and processed in parallel at the same time.

An embodiment of the third method will be described with reference to FIG. In this method, an input message input from the terminal device 12A is notified to the computer system IA and the computer system IBK, and online processing is performed in each computer system. In this case, even if computer system IA is stopped due to a failure, online processing continues because computer system IB is operating normally.

The fourth method is a method in which each computer system has an area for storing input messages.

An example of this fourth method will be explained with reference to FIG. 10.

Computer system IA is assumed to be an active computer system, and computer system IB is assumed to be a computer system that can take over the processing of computer system IA when computer system IA is stopped due to a failure. In this method, an input message input from a terminal device 12A is processed by a computer system IA, and is also stored in a secondary storage medium 16B connected to a computer system IB. When the computer system IA is in a failure-stopped state, the operator must inform the computer system IB that the computer system IA has been stopped due to a failure.
K is notified, the stored input message is read out, and the message is processed.

Thereafter, the terminal device 12A is reconnected to the computer system IB by the line switching device 11A, and online processing is continued.

[Problems to be Solved by the Invention] In the first method of the above-mentioned online processing switching methods in multiple computer systems, multiple computer systems must access resources such as the same database. Even in the second method, which has the disadvantage of requiring physical proximity, multiple computer systems must access files in the same secondary storage medium, so
Multiple computations - has the disadvantage that the systems must be physically close.

In the third method, simultaneous button processing is performed on multiple computer systems, so if one computer system stops due to a failure, online processing can be switched immediately. Only one online process is sufficient, and there is a drawback that operational efficiency in a multiple computer system decreases.

The fourth method solves the drawback of the first and second methods, that multiple computer systems must be physically close together, but the operator continues to be able to handle failures and shutdowns of online processing computer systems online. Disadvantage of notifying a computer system capable of processing the input message stored in a secondary storage medium to process the message, after which the operator must reconnect the terminal device by means of a line switching device to a computer system capable of continuing online processing. There is.

[Means for solving problems]

The online processing switching method in a multiple computer system of the present invention includes a terminal device connected to a plurality of computer systems via a line switching device, a message input/output means for exchanging messages with the terminal device, and a message input/output means for exchanging messages with the terminal device; In an online processing system having a message processing means for processing messages sent and received by the input/output means, the input message inputted from the message input/output means is transmitted to the message to be processed within the computer system and to another computer system. an input message branching means for branching into a message; an input message transmitting means for transmitting the message branched by the input message branching means to another computer system; a receiving means for receiving input messages by a computer system; a message storage means for storing input messages received by the receiving means; and a message storage means for storing input messages received by the computer system; monitoring means for monitoring the operating state of the computer system so that the processing being processed by the computer system can be taken over by another computer system; A storage message storage means for reading input messages for online processing; and reconnecting a terminal device connected to a computer system that has stopped due to a failure to the computer system that can take over the processing of the computer system that has stopped due to a failure. and line switching request means for requesting the line switching device to do so.

〔Example" The present invention will be explained in detail with reference to the drawings.

Referring to FIG. 1, one embodiment of the present invention includes computer systems IA and IB line switching devices MIIA and 11B1 on a computer and terminal devices 12A and 1.
It is composed of 2B.

The computer system IA includes a message processing means 2A, a stored message reading means 3A, an input message branching means 4A, an input message transmitting means 5A, and a monitoring hand P4.
j, 6A1 Message storage area 7A.

It includes input message storage means 8A, other system input message reception means 9A1, message input/output means 10A1, and line switching request means 13A. Moreover, the computer system IB has a message processing means 2 inside it.
B, memory message succession means 3B, input message branching means 4B, input message transmission means 5B, monitoring means 6B
, message storage area 7B, input message storage means 8B
, other system input message receiving means 9B, message input/output means 10B, and line switching request means 13
Contains B.

In the following example, one computer system is the active computer system, and computer system IB is the computer system I.
When A is in a failure-stopped state, message processing means 2
Message processing means 2B in computer system 1B transfers input messages processed by two people to message processing means 2B when computer system IA, which was processing messages, has stopped due to a failure. An example will be explained in which you can input a message into a message, process a message, and then continue message processing.

First, an embodiment of the active computer system of the present invention and another computer system prepared to take over the processing of the active computer system will be described.

Referring to FIGS. 1 and 2, the input message determined to have been input from the terminal device 12A with a step force is sent to the input message branching means 4A via the line switching device 11A1 and the message input/output means 10A at step 24. Referring to Figures 1 and 3 as notified in
In response to the input message, the input message branching means 4A notifies the two message processing means in step 31 in order to have the message processed, and also sends a notification to the input message transmission means 5A in order to send the message to the computer system IB. 32, the input message is notified.

The two message processing means process the input message and send the output message to the message input/output means 10AK.
This is further notified to the terminal device 12A via the 1-line switching device 11A.

Referring to FIGS. 1 and 4, the input message transmitting means 5A notifies the other system human-powered message receiving means 9BK in the computer system IB in response to the input message from the input message branching means 4A, and receives the input message from the other system. The means 9B further notifies the input message storage means 8B of the input message in step 41.

The input message storage means 8B stores the input message in step 42 so that the input message processed by the computer system IA can be input to the message processing means 2B in the computer system IB for message processing when the computer system IA is in a failure stop state. is stored in the message storage area 78.

Referring to FIGS. 1 and 5, the monitoring means 6A sends a health check signal to the computer system IB at regular intervals. The computer system IB monitors the signal by the monitoring means 6B, and if the signal does not arrive after a certain period of time, a failure in the computer system IA can be detected in step 51.

Next, in the event that the active computer system of the present invention is stopped due to a failure, the Hoshinashi Calculator System, which is prepared to take over the processing of the active computer system, switches to the active system, and the system that can continue to process transactions is activated. An example will be described.

The monitoring means 6B monitors the state of the computer system IA in step 51, and if the computer system IA is in a failure-stopped state, the monitoring means 6B sends a stored message successively to the computer system 3B in step 52.
The computer system IA is notified that it has stopped due to a failure.

Referring to FIGS. 1 and 6, the stored message succession means 3B outputs the input message stored in the message storage area 713 in step 62, and in step 63
, the message processing means 2B is notified and the message is processed.

When all the input messages have been processed in step 64, the stored message reading platform 3B notifies the line switching requesting means 13B that all the input messages stored in the message storage area 7B have been processed in step 65.

The line switching requesting means 13B is a line switching device E'
<IIAK makes a switching request for the terminal device 12A, and the line switching device 11A switches the terminal device 12A to the computer system IB.
Connect again.

The input message input from the terminal device 1'2A connected to the computer system IB is
The transaction is processed by the message processing means 2B via the message input/output means 10B and the input message branching means 4B.

In addition, the output message is the message input/output means 10B1.
The data is then routed to the terminal device 12A via the line switching device ff1llA.

〔Effect of the invention〕

According to the present invention, by having a storage area for input messages in a plurality of computer systems, storing large-scale messages processed online on a thin needle computer system, and monitoring each other for 11 failures, a computer system in the unlikely event of an accident can be remotely connected. It is possible to handle online processing even if there is a local 1c, and the effect is that the switching processing of the online processing system can be performed automatically without human intervention.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an embodiment of the present invention.
'r A diagram showing the four components of the message input/output means 10A in FIG. 1, and FIG. 3 shows the input message branching means 4A (I
), FIG. 4 is a diagram showing the configuration of the input message storage means 8 [3 of FIG. 1, and FIG. 5 is a diagram showing the configuration of the monitoring means 6Bf of FIG. 6 is a diagram showing the configuration of the stored message reading means 3B of FIG. 1, FIG.
FIG. 8, FIG. 9, and FIG. 10 are diagrams showing an example of the prior art. In Figures 1 to 10, IA, IB...computer system, 2A, 2B...
...Message processing means, 3A, 3B...
・Memorized message reading and hanging means, 4A, 4B...
- Input message branching means, 5A, 5B...Input message transmission means, 6A. 6B...Monitoring means, 7A, 7B...Message storage area, 8A, 8B...Input message storage means, 9A, 9B...-Other system input Message receiving means, IOA. 10B...Message input/output means, IIA, I
IB. 15...Line switching device, 12A, 12B
Terminal device, 13A, 13B Line switching request means, 14 Database, 16, 16A, 16B

Claims (1)

[Claims] A terminal device is connected to a plurality of computer systems via a line switching device, a message input/output means for exchanging messages with the terminal device, and messages exchanged by the message input/output means. In an online processing system that has a message processing means for processing an input message, an input message branch is provided in which an input message input from the message input/output means is branched into a message to be processed within the computer system and a message to be sent to another computer system. means, input message transmitting means for transmitting the message branched by the message branching means to another computer system, receiving means for receiving the input message transmitted from the other computer system at the computer system; message storage means for storing an input message received by the means; and when one computer system among the plurality of computer systems is in a failure stop state, processing that was being processed by the computer system is transferred to another computer system. monitoring means for monitoring the operating state of the computer system so that the computer system can be taken over by the computer system; and in response to a failure notification from the monitoring means, reading out an input message stored in the message storage means in order to cause the input message to be processed online. a stored message reading means; and a line switching requesting means for requesting the line switching device to reconnect a terminal device connected to a computer system that has stopped due to a failure to a computer system that can take over the processing of the computer system that has stopped due to a failure. An online processing system switching method in a multiple computer system, characterized by comprising: