JPH0769847B2 - Job control method during rerun - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] According to the present invention, a dummy running unit is provided in a job management unit, and when a job including a series of job steps is re-executed from the middle, the dummy running unit is assigned a specified number. Up to the job step, run only the job control statement without running the actual program, check that the file definition in the job control statement and the actual file status match, and set the correct file status in the restart job step above. I tried to hand it over.

[Industrial application field]

The present invention relates to a job control method during rerun, and more particularly to a method for checking a file status when a job consisting of a series of job steps is started halfway.

[Conventional technology]

When executing various application programs on the information processing system, many files are generally used as shown in FIG.

In the figure, 1 is a file, and a, b, c, etc. are file names. Reference numeral 2 denotes a job step, and ,, etc. denote job step numbers. U01 and u0 written next to the file
2, u03, etc. indicate the serial number (serial number) of the volume.

In the job shown in the figure, first the job step is the serial number u0.
Processing is performed using the data of the file a existing in the volume 1 and the processing result is output to the file b in the volume serial number u02. The job step processes using the data of the file b which is the processing result of the job step, and outputs the result to the files c and d in the volumes with serial numbers u03 and u04. Similarly, a series of job steps are executed thereafter, but in some cases, the previously used file b may be used again like the job step.

The flow of such a series of job steps, the file name used in each step, the volume serial number that stores the file, etc. are specified by the job control statement, and at execution time as specified by the job management section of the operating system. Managed by.

The series of job steps described above may be interrupted for some reason, for example, during the execution of the job steps. In such a case, it is necessary to re-execute from the beginning of the job step. In addition, although all job steps have been completed, it may be necessary to re-execute from the beginning.

In such a case, it is necessary to newly create a job control statement for re-execution or to input a command for re-execution depending on the previous execution status. The currently used re-execution command can specify the job step number of the job when the original job control statement is activated. However, as mentioned above, a large number of files must be used to execute a series of job steps, and each of these files must be stored on the volume specified in the job control statement. When the step is restarted from the middle, there is no guarantee that the file status from the beginning to the interrupted job step at the time of previous execution is reproduced, and the consistency between the job control statement specification and the actual file status. I have a problem.

[Problems to be Solved by the Invention] In the conventional job re-execution command, although the job step number to be restarted can be specified as described above, the file state at the time of the previous execution is not inherited. The consistency between the job control statement and the actual file status was not guaranteed when the job was restarted midway.

An object of the present invention is to ensure the consistency between the job control statement from the beginning of a job step to the restart step and the actual file state when the job is restarted midway.

[Means for solving problems]

In the present invention, the job management unit is provided with a job control statement so as to execute only confirmation of the file definition without running the actual program up to the designated job control statement of the series of job control statements when re-executing the job. By providing a dummy traveling means for performing dummy traveling and inputting a job re-execution command specifying a desired job step number, the dummy traveling means is activated when a job defined by a series of job control statements is started halfway. Causes a dummy run of the job control statement while checking the file definition of the job control statement without running the actual program up to the specified job step number, and the job step to be re-executed with the specified number The file status defined by a series of job control statements is passed.

[Work]

As described above, a series of job steps are restarted from the beginning until the specified step is checked while checking the file status, so the dummy run is performed, so when the job is restarted midway at the specified job step, the job control statement and the actual Consistency with the status is guaranteed, and normal jobs can be re-executed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

In the figure, 1 is a file, 2 is a job step, 3
Is an operating system, 4 is a job management unit, 5 is a dummy running means, and 6 is an operating console.

It is assumed that the job defined in the series of job control statements is about to be re-executed from a job step in the middle, for example, because the job is interrupted.

In this case, when the job is started, the restart step number of the job is specified and the re-execution command is input from the console 6.

When this re-execution command is input, the dummy running means 5 checks whether or not the file definition and the actual file state match at each step of the read series of job control statements.

For example, if the flow of the job is as shown in FIG. 2, the file step with volume serial number u01 is defined for input and the file b with volume serial number u02 is defined for output. Is the specified volume set on the
It is checked whether or not files a and b exist in the two volumes u01 and u02.

If the check result is correct, go to the next job step and check the file status again. In this way, the job control statement is run while sequentially confirming the file status up to the job step. Since the real program is not run during this time, a series of job steps 1 to 3 are not executed.

After running to the job step specified in this way and confirming that the actual file status is as defined in the job control statement, the file step specified in that file status [job step in this example ] To hand over.

As described above, in the present embodiment, execution of the designated job step can be started in the correct file state.

〔The invention's effect〕

As described above, according to the present invention, when re-executing a job, the consistency of the file status is assured by a simple operation, so that it is not necessary to create a new dedicated job control statement, and the operation is facilitated. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a job flow. Reference numeral 1 is a file, 2 is a job step, 3 is an operating system, 4 is a job management unit, and 5 is a dummy running unit.

Claims (1)

[Claims] 1. A job management unit for controlling the execution of a job defined by a series of job control statements having a job step number and a file definition, and specifying a job step number to start the execution and re-execution. A job control method for an information processing system capable of executing a job consisting of a series of job steps from an arbitrary job step by inputting a command to instruct, wherein the job management unit is configured to Among the job control statements, a dummy running means is provided for dummy running the job control statements so that only the file definition is checked without running the actual program up to the specified job control statement, and the job for which the desired job step number is specified By issuing the re-execution command of When starting the defined job from the middle, the dummy running means runs the dummy job control statement while checking the file definition of the job control statement without running the actual program up to the specified job step number. At most, the job control method at the time of rerun is characterized in that the file status defined by the series of job control statements is passed to the job step to be re-executed with the designated number.