JPH0793226A - Terminal equipment fault recovery system - Google Patents

Abstract

PURPOSE:To provide the terminal equipment fault recovery system which reliability is improved by reducing the load of a host computer. CONSTITUTION:When output processing 1 loads an output request to a printer terminal equipment 2 and any fault is generated at the printer terminal equipment 2, the numbers of printer terminal equipments turned to faults are registered on a table 6 in the order of faults by fault report processing 3. After the lapse of fixed time, fault recovery processing 4 performs fault recovery processing to the printer terminal equipments 2 registered on the table 6, when they are not recovered, they are registered on the table 6 again, the fault recovery processing is performed in a fixed cycle, and after the lapse of fixed time, the history is not registered on the table 6 but remained in a temporary fault information storage disk 5 as permanent faults.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device failure recovery system, and more particularly to a terminal device failure recovery system in an online system having a plurality of terminal printer devices.

[0002]

2. Description of the Related Art In an online system, a host computer manages whether a printer terminal device as an output target is operating normally.

When a printer terminal device temporarily fails for some reason, the host computer receives a failure notification from the printer terminal device, and the host computer sends a connection notification to the printer terminal device.

If the temporary failure is not recovered, the host computer again sends a connection notification to the printer terminal device, and repeats this series of operations at high speed indefinitely until the primary failure of the printer terminal device is recovered. There is.

[0005]

In the conventional online system, the reliability that the printer terminal device is in the normal state is not always high.

[0006] For example, a temporary failure such as an accidental power-off of a printer terminal device or a paper run-out requiring human recovery is a daily occurrence.

Particularly in a large-scale system having a large number of terminal printers, the number of occurrences of the above-mentioned temporary failure causes a large amount of human processing work, and in addition, stable output processing is not performed. However, there is a problem that the reliability and processing speed of the host computer are significantly affected.

An object of the present invention is to cause a printer terminal device to perform more stable output processing, reduce the load on the host computer, and construct a highly reliable terminal device failure recovery system.

[0009]

A terminal device failure recovery system of the present invention is a failure circuit system in an information processing system having a plurality of terminal devices, the terminal device responding to the occurrence of a failure of the terminal device. It is characterized by having means for performing a failure recovery process for a fixed time.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention. In the figure, when the output process 1 issues an output request to the printer terminal device 2 and the printer terminal device 2 has a fault, the fault notification process 3 is activated, and the faulty printer terminal device number is stored in the memory. It registers in the table 6 secured at. When another printer terminal device 2 becomes a failure, it is sequentially registered in the table 6.

Further, the temporary failure occurrence time of the printer terminal device 2 is saved in the temporary failure information storage disk 5. Information on the printer terminal device to be used is registered in advance in the temporary failure information storage disk 5, and the printer terminal device is managed.

When registering the printer terminal number in the table 6, after a temporary failure occurs, a fixed time (can be set arbitrarily)
Is not registered in the table 6 for the printer terminal device 2 that has passed, and is excluded from the target of failure recovery as a permanent failure,
It is recorded in the temporary failure information storage disk as a history.

The failure recovery processing 4 is activated when a predetermined time (arbitrarily set) has elapsed from the time when the failure notification processing 3 first registered the printer terminal device number in the table 6,
Recovery is performed for all printer terminal device numbers registered in Table 6, and when the failure is recovered, Table 6
To initialize.

FIG. 2 is a diagram showing the time history of the embodiment of the present invention, and FIG. 3 is a flow chart showing the time history of the embodiment of the present invention.

2 and 3, when a failure occurs in the printer terminal device 2 (step 101), the failure notification processing 3 is started (step 102), and the failure occurrence time is registered in the temporary failure information storage disk 5. Be done (Step 1
03). The time at this time is 19:00.

In the table 6, the printer terminal device number 1234 in which the failure occurred at this time is registered (step 104).

Here, the failure recovery processing 4 has a retry period of 1 minute interval, and if the time considered as a permanent failure is 3 minutes, the first failure recovery processing 4 (step 105) is performed.

As a result, it is assumed that the recovery is final (step 1
06), the failure notification processing 3 is further sent at 19:01 (step 102), the time of the first failure is written in the temporary failure information storage disk 5, and the unrestored printer terminal device is stored in the table 6. The number 1234 is registered (step 104).

Thereafter, failure recovery processing 4 (step 105)
Since the result is not recovered (step 106), the failure notification processing 3 (step 102) is performed again at 19:02, and the above contents are similarly written in the temporary failure information storage disk 5 and the table 6. Be done.

Here, it is assumed that the recovery has not yet been completed (step 106). Then, the fault notification process 3 (step 102) is sent again at 19:03, but 3 minutes have already passed from 19:00 when the first fault notification process was performed (step 107).

Since the time considered as a permanent failure is 3 minutes,
Here, a flag "1" indicating a permanent failure is set in the temporary failure information storage disk 5 (step 108), the printer is regarded as a permanent failure, and the printer terminal device number is not registered in the table 6 to recover the temporary failure. Remove from the target of processing,
A history of a permanent failure is recorded in the temporary failure information storage disk, and then the cause of the failure is considered.

If the failure is recovered during the failure recovery process (step 106), the terminal number registered in the table 6 is cleared (step 109) and the registration of another failed terminal is waited.

[0024]

According to the present invention, the failure recovery of the printer terminal device is carried out at a constant cycle, and the printer terminal device whose failure is not recovered even after the elapse of a fixed time is excluded from the failure recovery targets as a permanent failure. This has the effect of reducing the load on the host computer and allowing the printer terminal device to perform more stable output processing.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing a time history of an example of the present invention.

FIG. 3 is a flowchart showing a time history of the embodiment of the present invention.

[Explanation of symbols]

 1 Output Processing 2 Printer Terminal Device 3 Failure Notification Processing 4 Failure Recovery Processing 5 Temporary Failure Information Storage Disk 6 Table

Claims (5)

[Claims] 1. A fault circuit system in an information processing system having a plurality of terminal devices, comprising means for performing fault recovery processing for this terminal device for a certain period of time in response to the occurrence of a fault in the terminal device. A terminal device failure recovery system having. 2. The means includes a failure notification processing unit for receiving a failure notification of the terminal device, a storage medium for registering a terminal device in which a failure has occurred by the failure notification processing unit, and a terminal registered in the storage medium. The terminal device failure recovery system according to claim 1, further comprising a failure recovery processing unit that repeatedly executes the device failure recovery process within the fixed time. 3. The terminal device failure recovery system according to claim 2, wherein the storage medium registers only the terminal device that has recovered from the failure within the fixed time. 4. The storage medium erases registration of a terminal device for which failure recovery processing has been completed.
The terminal device failure recovery system described. 5. The terminal device failure recovery system according to claim 4, wherein the storage medium performs failure recovery processing in the order of registration of the terminal devices.