JPS6324347A - Automatic recovery processing system for tss center system - Google Patents

Abstract

PURPOSE:To execute an automatic recovery against an abnormality corresponding to each terminal/line by providing an abnormality detecting and processing part for detecting an abnormality of its own task in each service processing task, and informing the abnormality to a system monitor processing part, in case when the abnormality has been detected. CONSTITUTION:A TSS center system 10 offers a conversational processing service by time sharing to terminals 17A, 17B,... independently, respectively, through lines 16A, 16B. A system monitor processing part 11 starts service processing tasks 14A, 14B,... in accordance with the circuits 16A, 16B, monitors a service processing tank, and executes an initialization processing of the line, and an erasion processing and a restart processing of the service processing task, when an abnormality is informed from the service processing task. Abnormality detecting and processing parts 15A, 15B,... detect an abnormality of its own task, and informs the abnormality to the processing part 11, in case when the abnormality has been detected. In this way, an automatic recovery can be executed against the abnormality corresponding to each terminal/line.

Description

[Detailed Description of the Invention] [Summary] A service processing task is activated for each line, and an abnormality detection section for detecting an abnormality in its own task is placed in each service processing task, and the abnormality is detected by the abnormality detection section. If a system error such as a line abnormality occurs during center service in the TSS system, by deleting and restarting the service processing task, the system will automatically perform recovery processing without operator intervention. I do.

[Industrial application field]

The present invention is a system in which a plurality of terminals can receive TSS system services, and in which the system automatically performs recovery processing when a system error occurs. This relates to a system automatic recovery processing method.

[Conventional technology]

FIG. 4 shows an example of the conventional method. In Fig. 4.

30 represents an input/distribution processing task, and 31A and 31B represent conversation processing tasks.

A TSS center system is used in which a so-called personal computer or the like is used as a terminal to utilize the center's computer resources in a time-sharing manner. There are three different implementation forms of the TSS center system; for example, the form shown in FIG. 4 is commonly used.

So-called LO that requests the opening of a session from terminal (A)
When the GON command is input, the large distribution processing task
A conversation processing task 31A is dynamically generated and a session is opened. Thereafter, various conversation commands input from the terminal (A) are distributed by the large distribution processing task 30 to the conversation processing task 31A. From another terminal (B), L
When the OGON command is input, another conversation processing task 31B is similarly generated, and the conversation command input from the terminal (B) is distributed to the conversation processing task 31B to provide services in 9 time divisions.

By the way, if line abnormalities or system soft errors occur in special situations during service.

Conversation processing tasks due to so-called hang-ups.

Messages from the input/distribution processing task 30 may not be accepted or the terminal may become unresponsive. In such a case, input/output to the terminal is stopped and 2
In the case of recovery, conventionally, for example, the following operations are required.

If the terminal user becomes unable to use his or her own terminal.

-The line is disconnected from the terminal side. However, even if I reconnect the line, the center system does not work.

Since the conversation processing task remains alive and the hang-up state continues, no service can be received. Therefore, the center operator is notified of the abnormality by telephone, etc., and restoration processing is requested. The center operator checks the abnormality of the first line using the console, sets the second line again, and forcibly deletes the conversation processing task related to the abnormality using the CANCEL command. This makes it possible to open a session, and the terminal user is notified that the recovery has been completed. The terminal user then requests opening of a new session.

[Problem that the invention seeks to solve]

According to the above conventional method, the terminal user discovers an abnormality and
Since recovery must be requested to the center operator, there are problems in that recovery takes time and the operational burden on terminal users and center operators is heavy.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide means for automatically performing recovery processing without operator intervention when a system error such as an abnormality in one line occurs.

[Means for solving problems]

FIG. 1 shows an example of the basic configuration of the present invention.

In FIG. 1, 10 is a TSS center system.

11 is a system monitoring processing unit that generates service processing tasks and monitors the system; 12 is a service processing task generation unit; 13 is a recovery processing unit that recovers from system errors caused by line abnormalities; and 14A and 14B are conversation processing units for each line. service processing task for servicing, 15A, 15B
16A and 16B are lines, and 17A is an abnormality detection processing unit that detects an abnormality in its own task and notifies the system monitoring processing unit 11.
.

17B represents a terminal such as a personal computer equipped with a keyboard and a display.

The TSS center system 10 has relatively high processing capacity.
Equipped with PU and main storage. Depending on the capacity, the number of terminals that can simultaneously provide TSS services, that is, the maximum number of simultaneous connection lines, is determined.

In the case of the present invention, the system monitoring processing unit 11 corresponds to each line 16A, 16B, . . . that can be connected at the same time, and
By the service processing task generation unit 12.

Service processing tasks 14A, 14B,
Generate and start... Service processing task 14A
, 14B, . . . enter a waiting state for a session opening request from the terminals 17A, 17B, . So-called LOGON from terminal 17A etc.
When a command is input, the service processing task 14A and the like send and receive messages to and from the terminal 17A and the like. Then, one person executes the conversation command.

Each abnormality detection processing unit 15A, 15B, . . . checks whether the operation of its own task and the line are normal. For checking 2, for example, issue a timer interrupt to the invoking task periodically and check whether there is a response from the terminal 17A etc. If the input/output to the 2 lines is abnormal, try several times to recover 1. By checking whether or not
Anomalies can be detected. If an abnormality is detected, the system monitoring processing unit 11 is notified and the recovery processing unit 13 is called.

When the abnormality is notified, the recovery processing unit 13.

It executes the initialization process of the line related to the abnormality, the deletion process of the service processing task, the restart process of the service processing task, etc.

[Effect]

According to the invention, a service processing task 14A.

14B, . The line and terminal associated with the service processing task that encountered the abnormality are returned to a state similar to the initial setting state of the system. Therefore, hanger knobs, etc. are automatically released, and unless there is a permanent hardware failure in the 2nd line, etc., the terminal user can immediately receive service without the intervention of the center operator by inputting the LOGON command again. You will be able to receive

(Embodiment) FIG. 2 shows an embodiment of the present invention, and FIG. 3 shows a process explanatory diagram of the system monitoring processing task shown in FIG. 2.

In FIG. 2, the same reference numerals as in FIG. 1 correspond to those shown in FIG. 20 is a system monitoring processing task, 2
1 is a task common program section, 22A, 22B is a task corresponding data section, 23A, 23B is a transmission buffer, 24A
, 24B represent a sending task, 25A and 25B represent a receiving buffer, and 26A and 26B represent a receiving task.

The system monitoring processing task 20 has a recovery processing function as explained in FIG.
is started when the system starts up. At the time of initial setting by startup, each service processing task 14A, 14B, etc. is generated regardless of whether there is a session opening request.
A, 26B, . . . , each service processing task 14A,
It is generated every 14B, .

As a result, regardless of whether a session is opened or not.

Although a large number of tasks will be generated, the program executed by each of these tasks may be common. Therefore, by storing the program in the task common program section 21 and allowing the program to run simultaneously by so-called reentrancy, the increase in memory can be reduced by
B... and...

Transmission buffers 23A, 23B, ..., reception buffer 2
The increase can be limited to 5A, 25B, etc.

The sending task 24A executes a process of sending the message written in the sending buffer 23A by the service processing task 14A to the terminal 17A. Receive task 26A
executes a process of storing data sent from the terminal 17A into the reception buffer 25A. The service processing task 14A.

Input/output to and from the terminal 17A can be performed by simply reading and writing from and to the transmission buffer 23A and reception buffer 25A. The same applies to the terminal 17B and the like.

That is, conventional 2, for example, the input distribution processing task 30 shown in the 4th
The processing that was being performed by each service processing section 14A, 1
4B, . . . will be executed independently. This simplifies the monitoring and recovery processing by the 1 system monitoring processing task 20.

The system monitoring processing task 20 is the service processing task 1
An abnormality notification from 4A or the like is processed as shown in FIG. 3, for example. Numbers ■～■ in the following explanation are the third
They correspond to the numbers ■ to ■ shown in the figure.

■ Initialize the 9 lines when the system starts up and start service processing tasks etc. for the 9 lines.

■ After that, it enters the monitoring state and waits for an abnormality notification from the service processing task.

■ When there is an error notification from a service processing task.

The line related to the abnormality is disconnected and the 5 lines are initialized.

■ The service processing task, reception task, or
Clear sending tasks. That is, the task control tables and the like of these tasks are deleted and the data portion corresponding to the task is released.

■ Clear the transmit buffer, receive buffer, etc.

As a result of the above, the line etc. in which the abnormality occurred will be returned to the state before the initial settings upon system startup.

■ Similar to process ■, generate and restart the service processing task where the error occurred. Thereafter, control is returned to process (2) and monitoring continues in the same manner.

〔Effect of the invention〕

As explained above, according to one aspect of the present invention, recovery processing is automatically performed, which reduces the operational burden on the operator and enables quick recovery. Also.

Since the center can be operated unmanned, labor savings can be achieved.

[Brief explanation of the drawing]

FIG. 1 shows an example of the basic configuration of the present invention, FIG. 2 shows an embodiment of the present invention, FIG. 3 shows a processing explanatory diagram of the system monitoring processing task shown in FIG. 2, and FIG. 4 shows an example of a conventional system. In the figure, 10 is a TSS center system, 11 is a system monitoring processing unit, 12 is a service processing task generation unit, 13 is a recovery processing unit, 14A and 14B are service processing tasks,
15A and 15B represent abnormality detection processing units, 16A and 16B represent lines, and 17A and 17B represent terminals. Patent applicant: Fujitsu Limited, sub-agent, patent attorney Yoshiyoshi Ogasawara 1 Figure

Claims (1)

[Scope of Claims] In a TSS system that independently provides conversational processing services by time sharing to each terminal via a line, service processing tasks (14A, 14B, . . .
), monitors the service processing task, and when an abnormality notification is received from the service processing task, initializes the line assigned to the service processing task and deletes the service processing task. A system monitoring processing unit (11) that performs processing and restart processing of the service processing task; and a system monitoring processing unit (11) that detects an abnormality in its own task within each of the service processing tasks, and sends an abnormality to the system monitoring processing unit when an abnormality is detected. Anomaly detection processing unit (15A, 15B,
...), and is characterized in that it automatically recovers from abnormalities corresponding to each terminal/line.