JPH0644197A - System for controlling job of loosely-coupled multi-host system - Google Patents

Abstract

PURPOSE:To enable taking-over at the time of restarting the host of job control information or to enable referring to or changing from respective host computers by generating a job control information file in a shared device which is con nected to the plural host computers. CONSTITUTION:The host computers 1 and 2 are connected to the shared device having the job control information file 100. The host computer 1 generates system generation information 11 at the time of generating a system and a job control information taking-over means 12 generates the job control information file 100 by a job control information file generating means 15. A job control information refer request receiving part 13 refers to the job control information file 100 by a job control information file referring means 16. A job control information change request receiving part 14 changes the job control information file 100 by a job control information file changing means 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a job control method for a loosely coupled multiple host system, and more particularly to a job control method for a loosely coupled multiple host system that creates job control information for each host computer on a shared device.

[0002]

2. Description of the Related Art In recent years, computer systems have become large-scaled and diversified, and the configuration of host computers constituting the computer system and the operation of jobs have become complicated.

In the conventional job control method of the loosely coupled multiple host system, it is impossible to take over, refer to, and change the job control information across a plurality of host computers.

For this reason, each host computer cannot use the job control information of the previous operation, but uses the job control information of the system generation.

Further, the job control information of other host computers cannot be referred to or changed from each host computer, and the job control information of each host computer cannot be referred to or changed.

[0006]

In the above-mentioned job control method of the loosely coupled multi-host system, it is impossible to take over, refer to, or change the job control information across a plurality of host computers.

An object of the present invention is to create a job control information file on a shared device shared by a plurality of host computers, and based on the job control information file created on the shared device, execute job control information at system restart. Job control information takeover means for taking over the job control information, job control information file reference means for referencing or changing the job control information file, or job control information file changing means, and each host computer takes over the job control information when the system is restarted. The purpose of the present invention is to provide a job control method for a loosely-coupled multiple host system that enables the restart of the operation of each host computer according to the previous job control information and the reference and change of the current job control information.

[0008]

A job control method for a loosely coupled multiple host system according to a first aspect of the present invention is a loosely coupled multiple host system having a plurality of host computers and a shared device connected to each of the host computers. In the job control method, a job control information file on the shared device, a job control information file creating means for creating job control information in the job control information file, and a job control information file referring means for referring to the job control information file. A job control information takeover means for taking over the job control information from the job control information file when each of the host computers is restarted, and by creating the job control information in the job control information file, When restarting each system, during the previous operation It is constructed by taking over the job control information.

The job control method of the loosely coupled multiple host system of the second invention is a job control method of the loosely coupled multiple host system having a plurality of host computers and a shared device connected to each of the host computers. A job control information file on the shared device,
A job control information reference request receiving unit that receives a job control information reference request of each of the host computers;
A job control information file referencing means for referencing the job control information file, and storing the job control information file on the shared device so that each of the host computers can refer to the same job control information. It is configured by

Further, the job control method of the loosely coupled multiple host system of the third invention is the job control method of the loosely coupled multiple host system having a plurality of host computers and a shared device connected to each of the host computers. A job control information file on the shared device, a job control information change request receiving unit that receives each job control information change request of the host computer, and a job control information file changing unit that changes the job control information file. By storing the job control information file on the shared device, it is possible to change the same job control information from each of the host computers.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a job control system of a loosely coupled multiple host system of the present invention. As shown in FIG. 1, the loosely-coupled multiple host system according to this embodiment includes host computers 1 and 2, a job control information file 100 on a shared device 3 connected to each host computer 1 and 2, and each host computer. Consoles 18 and 28 connected to the host computers 1 and 2, system generation information 11 and 21 created when the system of the host computers 1 and 2 is generated, and job control information of the host computers 1 and 2 when the host computers 1 and 2 are started or restarted. Job control information transfer means 12 and 22 for performing transfer processing, job control information reference request reception units 13 and 23 that receive a reference request for the job control information of each host computer 1 and 2, and job control of each host computer 1 and 2. Job control information change request receiving units 14 and 24 for receiving information change requests
Of the job control information file 100, job control information file creation means 15, 25 for creating information in the job control information file 100, job control information file reference means 16, 26 for referring to information in the job control information file 100, and job control information file 100. It is composed of job control information file changing means 17 and 27 for changing information.

The operation of this embodiment will be described below. Taking the host computer 1 as an example, the system generation information 11 is created when the operation of the host computer 1 is started or restarted.

FIG. 2 shows the job control information inheritance means 12
6 is a flowchart showing an example of the operation of FIG. As shown in FIG.
When the host computer 1 is started (step 121),
The job control information file creating means 15 creates the job control information file 100 (step 124).

When the host computer 1 is not started (step 121), that is, when restarted, the job control information file reference means 16 refers to the job control information file 100 (step 122). If the job control information file 100 has not been created (step 12
3) Created by the job control file creating means 15 (step 124).

Next, the console 18 of the host computer 1
When there is a request to refer to the job control information, the job control information reference request acceptance unit 13 is notified.

FIG. 3 is a flow chart showing an example of the operation of the job control information reference request reception unit 13. As shown in FIG. 3, the job control information reference request receiving unit 13 acquires the information of the job control information file 100 by the job control information file reference means 16 (step 131). When acquired (step 132), the job control information is output to the console 19 (step 133).

Further, the job control information file reference means 1
When the acquisition of the information of the job control information file 100 fails in step 6 (step 132), the job control information reference request acceptance unit 13 outputs a message of job control information reference failure to the console 18 (step 134). ).

Next, the console 18 of the host computer 1
When there is a request for changing the job control information, the job control information change request receiving unit 14 is notified.

FIG. 4 is a flow chart showing an example of the operation of the job control information change request receiving unit 14. As shown in FIG. 4, the job control information change request receiving unit 14 changes the information in the job control information file 100 by the job control information file changing means 17 (step 141).

When the job control information file changing means 17 has succeeded in changing the information in the job control information file 100 (step 142), the job control information change request receiving section 14 gives a message indicating that the job control information change is completed. Is output to the console 18 (step 143).

Further, the job control information file changing means 1
If the change of the information in the job control information file 100 fails in step 7 (step 142), the job control information change request reception unit 14 outputs a message of the job control information change failure to the console 18 (step 144). ).

Similar processing to that of the host computer 1 is performed in the host computer 2 as well.

[0023]

As described above, according to the job control method of the loosely coupled multiple host system of the present invention, by creating the job control information in the job control information file shared by a plurality of host computers, each host computer can be controlled. When restarting, the job control information can be inherited from the job control information file, and the job control information can be referenced from each host computer.
Since the job control information can be changed from each host computer, there is an effect that jobs can be centrally controlled from each host computer.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a job control system of a loosely coupled multiple host system of the present invention.

FIG. 2 is a flowchart showing an example of an operation of a job control information takeover unit 12.

FIG. 3 is a flowchart showing an example of an operation of a job control information reference request reception unit 13.

FIG. 4 is a flowchart showing an example of the operation of the job control information change request reception unit 14.

[Explanation of symbols]

 1 and 2 host computer 3 shared device 11 and 21 system generation information 12 and 22 job control information takeover means 13 and 23 job control information reference request acceptance unit 14 and 24 job control information change request acceptance unit 15 and 25 job control information file creation Means 16,26 Job control information file reference means 17,27 Job control information file changing means 18,28 Operator console 100 Job control information file

Claims (3)

[Claims] 1. A job control information file on the shared device in a job control method of a loosely coupled multiple host system having a plurality of host computers and a shared device connected to each of the host computers, and the job control information file. Job control information file creating means for creating job control information, job control information file referring means for referring to the job control information file, and job control information from the job control information file when restarting each of the host computers. A job control information inheriting means for inheriting the job control information, and by creating the job control information in the job control information file, the job control information of the previous operation is inherited when each system of the host computer is restarted. Loosely coupled multi-host system Job control system. 2. A job control method for a loosely coupled multiple host system having a plurality of host computers and a shared device connected to each of said host computers, wherein a job control information file on said shared device and A job control information reference request reception unit that receives each job control information reference request, and a job control information file reference unit that references the job control information file, and stores the job control information file on the shared device. By so doing, the same job control information can be referred to from each of the host computers, and the job control method for the loosely coupled multiple host system is characterized. 3. A job control method of a loosely coupled multiple host system having a plurality of host computers and a shared device connected to each of said host computers, comprising: a job control information file on said shared device; A job control information change request receiving unit that receives each job control information change request, and a job control information file changing unit that changes the job control information file, and stores the job control information file on the shared device. By so doing, it is possible to change the same job control information from each of the host computers.