JP2809271B2 - Job re-execution method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a restart of a computer system (hereinafter simply referred to as a system) after a system failure, and more particularly to a job re-execution method for a job being executed at the time of the system failure.

[0002]

2. Description of the Related Art In Japanese Patent Application Laid-Open No. Sho 62-177633,
In a system that starts an inspection package job according to a predetermined schedule, when a system failure occurs, a function to determine a job to be executed next from a job execution history record and start the job is described.

In Japanese Patent Application Laid-Open No. 3-225434, when a system failure occurs in a large-scale computer system that manages a job by an automation system, the job is re-executed based on the detailed information of the job being executed by the automation system. It mentions the function to be activated.

[0004]

A first problem with the above-mentioned prior art is that the job automatic restart processing method disclosed in Japanese Patent Application Laid-Open No. Sho 62-177633 requires an execution job in advance to restart the job. A schedule table must be prepared, and restart of a job is performed only on a job basis. The reason is that this method is an automatic restart method for only a specific job called an inspection package job.

[0005] The second problem is disclosed in JP-A-3-225434.
In the job restart method disclosed in Japanese Patent Application Laid-Open No. H10-209, the restart method can be selected only from the start of the job or from the step being executed. The reason is that this method has no means for specifying the restart position.

A third problem is that of Japanese Patent Application Laid-Open No. 3-225434.
In the job restart method disclosed in Japanese Patent Application Laid-Open Publication No. H10-266, the output information of the job before the system failure is unknown. The reason is that this method only mentions restarting the job,
The output information before the system failure is not mentioned.

[0007] The fourth problem is disclosed in Japanese Patent Application Laid-Open No. 3-225434.
In the job restart method disclosed in Japanese Patent Application Laid-Open Publication No. H10-207, only a job managed by the automation system can be restarted, and the operator restarts the automation system after a system failure, so that the job is restarted. Operator intervention is required. The reason is,
This is because this method relates to a large-scale computer system that automates the management of batch jobs by an automation system.

It is an object of the present invention to provide a job re-execution method for saving output information of a job being executed at the time of a system failure and re-executing the job from an arbitrary location without intervention of an operator.

[0009]

A job re-execution method according to the present invention is a job re-execution method for automatically generating a new job based on information of a job being executed at the time of system failure and automatically executing the job. Main memory for storing own information
Job recognition table, information about the job itself and job
Control information on the secondary storage device that stores the job control statement
If, translating the input job control language, and job control language translation means for creating the job recognition table and the job control information, scheduling jobs, changing the contents of the job recognition table and the job control information A job scheduling means for performing start processing and end processing of a job scheduled by the job schedule means, and further performing start processing and end processing of a job step in the job, each time the job recognition table and the job control information Job step execution management means for changing the contents, system startup means for restarting the system in the event of a system failure, and referring to the job control information when the system is restarted by the system startup means, in the event of a system failure. Of the running job Comprising a job restoring means for restoring the job recognition table, and a job restart means for newly occurred job start based on the job recognition table restored by this job restoring means. Further, when the job started by the job restart unit is re-executed, the execution is
A job restart position specifying means for fingers <br/> constant any point in the job to be started as restart position, job restart searching for restarting position of the specified job by the job restart position specifying means Position search means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a job re-execution method according to an embodiment of the present invention. The job re-execution method according to the present embodiment includes a job recognition table 11 in the main storage A, a job control information 12 in the secondary storage device B, and a job for translating a job control statement input from the console C. Control language translating means 1, job scheduling means 2 for scheduling jobs, job step execution managing means 3 for managing execution of jobs and job steps, system starting means 4 for restarting the system in the event of a system failure, system A job restoring unit 5 for restoring the job recognition table 11 of the job being executed at the time of the failure, a job restarting unit 6 for generating and starting a new job based on the job recognition table 11, and a job restart position. A job restart position specifying means 7 for specifying a job restart position searching means 8 for searching for a job restart position. It has been.

The job step execution management means 3 includes a job start processing section 31, a job step start processing section 32,
Job step end processing unit 33 and job end processing unit 3
4 is included.

Referring to FIG. 2, the job recognition table 1
1 is a job occurrence number and job identification information (job name,
User name, charging unit name, etc.), a job stage, a failure re-execution flag, and other job control information. The failure re-execution flag indicates that the job has been restarted by the job re-execution method due to encountering a system failure during execution.

Referring to FIG. 3, job control information 12
Is a job occurrence number, job identification information (job name, user name, charging unit name, etc.), job stage, failure re-execution flag, other job control information, and RERUN.
Information (re-execution method, re-execution position, re-execution position details, and current execution position), and RERUN information default value (RERU
N format excluding the area of "current execution position")
And a job control statement internal format. The re-execution method is
There are three types: re-execution, re-execution as the same job, and re-execution as another job. Also, the re-execution position is
There are four types: a job head, a specific label, a running job step as a reference, and a specification at the time of re-execution. Further, the details of the re-execution position include the label name when the re-execution position is a specific label and the running job step when the re-execution position is based on the running job step.
There are two types of subsequent job steps. Note that when n = 0, it indicates a running job step, and when n <0, it indicates a job step before the running job step.

Referring to FIG. 4, the processing of the job control language translating means 1 includes a job control statement reading step S101.
, Job occurrence number acquisition step S102, job recognition table and job control information creation step S103
Job stage translation setting step S104, job control sentence translation step S105, job recognition table of job recognition information and job control information reflection step S106, and RERUN information default value setting step S10
7, a job control statement storage step S108, a job stage translation completion setting step S109, and a translation completion notification step S110.

Referring to FIG. 5, the processing of the job schedule means 2 is a translation completion stage job search step S20.
1 and translation completion stage job presence determination step S202
And job schedule availability determination step S203;
Update during job stage schedule step S204
And a job schedule completion notification step S205;
It comprises a job schedule waiting step S206.

Referring to FIG. 6, the processing of the job step execution management means 3 includes a user program end notification step S301 and a job step end processing step S302.
And receiving a schedule completion notification step S303
A failure re-execution job determination step S304, a job restart position search means calling step S305, a job control statement internal format reading step S306, a current execution position update step S307, a job start statement determination step S308, Start processing step S309;
Job end sentence determination step S310, job end processing step S311, job step start sentence determination step S312, and job step start processing step S31
3, a user program activation step S314, and a job control processing step S315.

Referring to FIG. 7, the processing of the job restoring means 5 includes an unrestored job search step S501, an unrestored job existence determining step S502, a job recognition table restoring step S503, a schedule determination step S504, a job Stage translation waiting setting step S5
05, an executing job determination step S506, and a job stage output wait setting step S507.

Referring to FIG. 8, the processing of the job restart means 6 includes a re-execution designation presence / absence determination step S601, a re-execution designation determination step S602 as another job, a job stage translation completion setting step S603, a job delivery. Deletion step S604, job occurrence number acquisition step S605, job recognition table and job control information creation step S606 for a new job, job stage translation completion setting step S607, failure re-execution flag ON step S608, and job control information deletion It consists of step S609.

Referring to FIG. 9, the processing of the job restart position specifying means 7 is a restart position inquiry step S70.
1, restart position and restart position detail reflection step S
702.

Similarly, referring to FIG. 9, the processing of the job restart position search means 8 includes a restart position designation completion determination step S801 and a restart determination step S801 from the beginning of the job.
802 and restart determination step S80 from a specific label
3, job control statement skipping step S804, current execution position positioning step S805, restart position details n = 0 determination step S806, restart position details n
> 0 determination step S807, n job step reading step S808, restart position details n <0 determination step S809, and job step reading back step S810 for n absolute values.

FIG. 10 is a diagram showing an operation when the system in the job re-execution method according to the present embodiment is operating normally.

FIG. 11 is a diagram showing operations in restoring and restarting a job after a system failure in the job re-execution method according to the present embodiment.

FIG. 12 is a diagram showing an operation in restarting a job from an arbitrary position in the job re-execution method according to the present embodiment.

Next, the operation of the job re-execution method according to the present embodiment configured as described above will be described.

(1) When the system is operating normally (see FIG. 10)

When a job is input from the console C, the job control language translating means 1 acquires a job occurrence number, translates a job control statement, creates a job recognition table 11 in the main memory A, Job control information 12 on the next storage device B
And transfers control to the job scheduling means 2.

More specifically, the job control language translating means 1
When activated by the input of a job, a job control statement of the input job is read (step S101), and a job occurrence number of the job is acquired (step S10).
2). After acquiring the job occurrence number, the job control language translating means 1 secures an area for the job recognition table 11 and the job control information 12, and reflects the acquired job occurrence number (step S103).

Next, the job control language translating means 1 sets the job stage of the job recognition table 11 and the job control information 12 to "under translation" (step S104), and translates the read job control statement (step S10).
5). Since the job recognition information can be obtained at the time of translation, the job control language translating means 1
1 and the job recognition information of the job control information 12 (step S106). Further, the job control language translating means 1 recognizes the default value of the RERUN information described in the job control statement and stores it in the RERUN information default value area of the job control information 12 (step S107). Then, the job control language translating means 1 stores the job control statement translated into the internal format in the job control statement internal format area of the job control information 12 (step S108).

When the storage of the internal format is completed, the job control language translating means 1 sets the job stage to "translation completed".
(Step S109), the job scheduling means 2
Is notified of the completion of translation (step S110).

Next, the job schedule means 2 schedules the job with reference to the job recognition table 11 and notifies the job step execution management means 3. At the same time, the job scheduling means 2
To update.

More specifically, the job scheduling means 2
The job is activated by a translation completion notification from the job control language translation unit 1 or a job end notification from the job step execution management unit 3 and searches the job recognition table 11 for a job to be scheduled (a job whose job stage is in the translation completion stage). (Step S201).

If a job to be scheduled is found (Yes in step S202) and the job is schedulable (Yes in step S203), the job scheduling means 2 sets the job stage of the job recognition table 11 and the job control information 12 to Update to "during schedule" (step S204). After updating the job stage, the job schedule unit 2 notifies the job step execution management unit 3 of the completion of the job schedule (step S205).

On the other hand, if the job scheduling is not possible in step S203, the job scheduling means 2
Put the job on schedule (step S20)
6).

Subsequently, the job step execution management means 3
Are the job recognition table 11 and the job control information 12
And execute jobs and job steps. The job step execution management means 3 updates the job control information 12 every time a job or a job step is started or ended.

More specifically, the job step execution management means 3
Is activated by the schedule completion notification of the job schedule means 2 or by the termination of the user program. If the activation factor is the user program termination notification (YES in step S301), the job step termination processing unit 33 executes the job step termination processing. Perform (Step S302). Here, the RER of the job control information 12
If the UN information has been updated at the start of the job step, the job step end processing unit 33 restores the RERUN information to a default value.

If the activation factor is not the user program end notification (NO in step S301), the job step execution management means 3 receives the schedule completion notification (step S303), and the job scheduled at this time is re-executed for the failure. If it is a job (step S
In step 304, the job restart position search unit 8 is called to search for a job restart position and locate a job control statement execution position (step S305).

Next, the job step execution management means 3
The internal format of the job control statement of the job control information 12 is read (step S306). The read position is from the beginning of the job control statement in the case of a job that is not a failure re-execution job immediately after completion of the schedule, and is the position determined by the job restart position search unit 8 in the case of a failure re-execution job. The job after the end of the job step includes the next process of the job step whose execution has been completed.

After reading the internal format of the job control statement, the job step execution management means 3 reads the job control information 12
The “current execution position” is updated to the read position (step S307). Thus, it is possible to know which process was being executed after the system failure.

If the read job control statement is a job start statement (YES in step S308), the job step execution management unit 3 performs a job start process by the job start processing unit 31 (step S309). The job start processing unit 31 updates the job stage of the job recognition table 11 and the job control information 12 to “executing job”, and copies the RERUN information default value area of the job control information 12 to the RERUN information area. With this, RERU
The N information becomes valid, and the failure can be re-executed after the system failure. After the job start processing, the job step execution management means 3 reads the next job control statement (step S306).

If the read job control statement is a job end statement (YES in step S310), the job step execution management unit 3 performs job end processing by the job end processing unit 34 (step S311). The job termination processing unit 34 deletes the job control information 12 and updates the job stage of the job recognition table 11 to “waiting for output”. Further, the job end processing unit 34 notifies the job schedule unit 2 of the end of the job. If there is a job waiting to be scheduled, the job will be scheduled.

If the read job control statement is a job step start statement (YES in step S312), the job step execution management unit 3 causes the job step start processing unit 32 to execute a job step start process. RER valid only for the job step in the job step start statement
If the UN information has been specified, the job step start processing unit 32
Updates the information area as specified. This makes it possible to set RERUN information for each job step. Then, after the job step start processing, the job step execution management means 3 starts the user program (step S314).

If the read job control statements are not the above three, the job step execution management means 3 performs the job control processing described in the job control statement (step S315), and then executes the next job control statement. Is performed (step S306).

If the system is operating normally,
The above operation is performed.

(2) Restoring and restarting a job after a system failure (see FIG. 11)

If the system fails, the job recognition table 11 in the main memory A for the job being executed disappears.

The system start-up means 4 restarts the system.

The job restoring unit 5 is started by the system start-up unit 4 when the system is restarted after a system failure.

The job restoring means 5 has a job control information 12
Unrecovered job existing in the system before the system failure is recognized (step S501), and if there is an unrestored job (yes in step S502), the job has the same format as the job recognition table in the job control information 12 of the job. The job recognition table 11 of the job is restored by copying the area in the main storage A (step S503).

If the job stage of the restored job is “scheduled” (YES in step S 504), the job restoring unit 5 sets the job stage to “waiting for translation” (step S 505).

If the job stage of the restored job indicates "executing" (YES in step S506), it means that the job restoring unit 5 was executing before the system failure. Then, the job stage of the job recognition table 11 and the job control information 12 of the job is set to “waiting for output” (step S507).

When the job restoring process is completed, the job re-starting means 6 selects the job which is being executed before the system failure and which has been designated to be re-executed among the jobs restored by the job restoring means 5. Restart.

More specifically, the job re-starting means 6 determines that the job whose re-execution method is “do not re-execute” in the job control information 12 (No in step S 601) Is deleted (step S609).

If the job being executed before the failure specifies "re-execute as the same job" in the re-execution method of the job control information 12 (No in step 602), the job restarting means 6 Sets the job stage of the job to "translation completed" (step S603), and deletes the delivery of the job (step S604). After starting the system, the job is executed by the job scheduling means 2.
Automatically scheduled by

The job control information 1 is being executed before the failure
For a job designated as “re-execute as another job” in the second re-execution method (Yes in step S602), the job restarting unit 6 acquires a new job occurrence number (step S605), and The job recognition table 11 'and the job control information 12' of the new job are created by copying the job recognition table 11 and the job control information 12 of the job (step S60).
6). After that, the job restarting unit 6 sets the job stage of the new job to “translation completed”, so that the new job is automatically scheduled by the job scheduling unit 2 after the system is started (step S607).

Finally, the job restarting means 6 outputs the job recognition table 11 (or 11 ') of the restarted job.
Turn on the failure re-execution flag (step S60).
8). Thereby, when the job is executed, the job step execution management means 3 can recognize that the job is a re-execution job,
The search for the restart position can be performed.

Upon receipt of the notification, the job schedule means 2 schedules the job and notifies the job step execution management means 3 as in the case where the job is normally input.

As described above, the restarting process, which preserves the output information of the job being executed at the time of the system failure, which is the operation of the job re-executing method according to the present embodiment, is completed.

(3) Restarting the job from an arbitrary position (see FIG. 12)

When the job is restarted, the job step execution management means 3 executes the job start processing by the job start processing section 31 and then uses the job restart position search means 8 to execute the job restart processing.
The job control information 12 of the job is skipped to an arbitrary position in the job specified by the job restart position specifying means 7, and the job is restarted from the specified position.

More specifically, the job restart position search means 8
Is called by the job step execution management means 3 when the job step execution management means 3 executes the failure re-execution job (step S305).

If the re-execution position of the job control information 12 relating to the failure re-execution job is “designated at the time of re-execution” (NO in step S801), the job restart position search unit 8 7, the restart position is inquired (step S701). The job restart position specifying means 7 reflects the restart position specified in response to the inquiry to the restart position and the restart position details of the job control language 12 (step S702). Reverse processing.

If the re-execution position is designated as “head of job” (YES in step S 802), the job restart position search means 8 determines that the job control statement execution position has already been positioned at the head of the job. No processing is performed on the job.

If the re-execution position is “specific label” (YES in step S 803), the job restart position search means 8 executes the job control statement up to the label name indicated in the restart position details of the job control information 12. By skipping, the label is restarted from the designated label (step S804).

If the restart position is not the above two positions (that is, if restart from a position based on the job step being executed before the failure is specified), the job restart position search is performed. The means 8 positions the job control statement execution position of the job at the “current execution position” (the position of the job step executed before the failure) in the job control information 12 (step S805).

At this time, the details of the restart position indicate that the position to be re-executed is from the job step n times after the job step being executed.

When n = 0 (Yes in step S806), “Re-execute from job step being executed”
In this case, the job restart position search unit 8 determines that the job control statement execution position is located at the position to be restarted by the above-described positioning process. Is not performed.

When n> 0 (Yes in step S807), the job restart position search means 8 means "re-execute from the job step n times later than the job step being executed". Therefore, the execution position is positioned where n job steps have been skipped from the currently positioned job control statement position (step S80).
8).

If n <0 (step S809)
If the absolute value of n is N, the job restart position searching means 8 calculates "N from the job step being executed.
Since "re-execute from previous job step" means, the execution position is positioned where N job steps have been read back from the currently positioned job control statement position (step S810).

As described above, by locating the job control statement execution position and returning the processing to the job step execution management means 3, the job is restarted from the designated position.

[0071]

As described above, the first effect of the present invention is that a job control language translating means for translating a job control statement and changing the contents of a job recognition table and job control information, Job scheduling means for changing the contents of the recognition table and the job control information; performing start processing and end processing of the job; and further performing start processing and end processing of job steps in the job. Job step execution management means for changing the content of
A system start-up unit that restarts the system in the event of a system failure, a job restoration unit that restores the job recognition table of the job being executed at the time of the system failure by referring to the job control information, and a job Job restart means for generating and starting a new job, so that in the event of a system failure, the job recognition table can be restored using the job control information and restarted as another job. This means that the delivery of the previous job is saved. Therefore, it is possible to easily refer to the execution history and output information before the system failure.

The second effect is that, when the system is restarted after a system failure, a job restart position specifying means for specifying a restart position of a job and a job restart position searching means for searching the restart position are provided. Therefore, it is possible to restart the job from an arbitrary position. For this reason, the job can be restarted from the processing required at the time of re-execution without modifying the job control statement, and the operation of the user is reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a job re-execution method according to an embodiment of the present invention.

FIG. 2 is a diagram showing more detailed contents of a job recognition table in FIG. 1;

FIG. 3 is a diagram showing more detailed contents of job control information in FIG. 1;

FIG. 4 is a flowchart showing processing of a job control language translating means in FIG. 1;

FIG. 5 is a flowchart showing a process of a job schedule unit in FIG. 1;

FIG. 6 is a flowchart showing a process of a job step execution management unit in FIG. 1;

FIG. 7 is a flowchart showing processing of a job restoring unit in FIG. 1;

FIG. 8 is a flowchart showing processing of a job restart unit in FIG. 1;

FIG. 9 is a flowchart showing processing of a job restart position designation unit and a job restart position search unit in FIG. 1;

FIG. 10 is an explanatory diagram showing an operation when the system in the job re-execution method according to the present embodiment is operating normally.

FIG. 11 is an explanatory diagram showing operations in restoring and restarting a job after a system failure in the job re-execution method according to the present embodiment.

FIG. 12 is an explanatory diagram showing an operation in restarting a job from an arbitrary position in the job re-execution method according to the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Job control language translation means 2 Job schedule means 3 Job step execution management means 4 System start-up means 5 Job restoration means 6 Job restart means 7 Job restart position designation means 8 Job restart position search means 11 Job recognition table 12 Job Control information 31 Job start processing unit 32 Job step start processing unit 33 Job step end processing unit 34 Job end processing unit A Main memory B Secondary storage device C Operation console

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G06F 11/14 310 G06F 9/06 410

Claims (2)

(57) [Claims] In a job re-execution method for automatically generating a new job based on information of a job being executed at the time of a system failure and automatically executing the job , a job recognition table on a main storage for storing information of the job itself.
And secondary information that stores information about the job itself and job control statements
Translated and job control information on憶device, the input job control language, and job control language translation means for creating the job recognition table and the job control information, scheduling jobs, the job recognition table and the job A job scheduler for changing the contents of the control information; and a start process and an end process for a job scheduled by the job scheduler, and a start process and an end process for a job step in the job.
A job step execution managing means for changing the contents of the job recognition table and the job control information each time; a system starting means for restarting the system in the event of a system failure; and when the system is restarted by the system starting means. Job restoring means for restoring a job recognition table of a job being executed at the time of system failure by referring to the job control information; and newly generating a job based on the job recognition table restored by the job restoring means. A job re-execution method comprising: a job re-starting means for starting. 2. A job rerun method of claim 1, wherein the started jobs by the job restart means re
When executing, any part in the job to start execution
A job restart position designating means for designating as a restart position, job re-execution system including a job restart position search means for searching the restart position of the specified job by the job restart position specifying means.