JPH02253336A - Program starting system - Google Patents

Abstract

PURPOSE:To correct a job control language JCL in real time if an error is detected with the JCL used for start of a program by using a JCL rewriting means. CONSTITUTION:If an error of a JCL is detected by a JCL analyzing means 5, a JCL error informing/changing means 7 informs a terminal 1 of the erroneous JCL and receives a corrected JCL from the terminal 1 to send it back to the means 5. A JCL rewriting means 9 rewrites the JCL corrected by the means 7 to an auxiliary storage device 2. As a result, the error of the JCL is already corrected when a program is started again by the same JCL. Then the program is smoothly started with no request produced to a program starting requester for correction of a JCL.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a program starting method, and particularly to a program starting method in a computer system.

[Conventional technology]

Conventionally, in the program startup method using job control language (hereinafter abbreviated as JCL), if a description error or specification error is detected during the analysis process to determine whether there is a description error or specification error in the JCL, The program interrupted the JCL analysis process, issued an abnormal termination notification, and ended without starting the program.

(Problem to be Solved by the Invention) In the conventional program startup method described above, if there is a description error or specification error in the JCL, the program will terminate without starting after the abnormal termination notification. There is a disadvantage that the JCL must be modified by means and the execution of the program must be requested again.

In view of the above-mentioned points, an object of the present invention is to provide real-time JCL information by a program start requester when there is an error in JCL.
To provide a program startup method that allows modification of CL and eliminates the need to once terminate a program startup request and issue a program startup request again after modifying JCL.

[Means to solve the problem]

The program starting method of the present invention includes a job control B language input means for inputting a job control language registered in advance on an auxiliary storage device in a program starting method for a computer system; A job control language analysis means that determines whether or not there is an error in the job control language, and if there is no error in the job control language, expands the job control language into data that allows the program to be executed; and job control using this job control language analysis means. If it is determined that there is an error in the language, the program startup requester is notified of the erroneous job control language in real time, and the job control language corrected by the program startup requester is received and the job control language is analyzed. a job control language error notification/changing means for returning the job control language to the auxiliary storage device; and program execution means for starting the program based on data that allows the program to be executed developed by the analysis means.

[Effect]

In the program starting method of the present invention, the job control language input means inputs the job control language registered in advance on the auxiliary storage device, and the job control language analysis means inputs the job control language input by the job control language input means. It is determined whether there is an error or not, and if there is no error in the job control language, the job control language is developed into executable data for the program, and the job control language error notification/change means converts the job control language into data using the job control language analysis means. If it is determined that there is an error, the job control language containing the error is notified to the program start requester in real time, and the job control language corrected by the program start requester is received and returned to the job control language analysis means. , the job control language write-back means writes back the job control language corrected by the job control language error notification/change means to the auxiliary storage device, and the program execution means can execute the program expanded by the job control language analysis means. Launch a program based on data.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a program startup method according to an embodiment of the present invention. The program startup method of this embodiment includes a terminal 1 that requests program startup, an auxiliary storage device 2 that stores a JCL containing program startup information, and a JCL input means that inputs the JCL from the auxiliary storage device 2. 3, a JCL analysis area 4 in which the JCL input by the JCL input means 3 is stored, and a JC
JCL analysis means 5 that analyzes the JCL stored in the L analysis area 4 and converts the program into executable data;
A JCL expansion area 6 that stores data that can execute the program converted by the JCL analysis means 5;
When an error is detected in the JCL by the analysis means 5, the JCL error notification/changing means 7 notifies the terminal 1 of the JCL containing the error, receives the correctly corrected JCL from the terminal 1, and returns it to the JCL analysis means 5. and JCL analysis means 5
a program execution means 8 for starting a program based on executable data for the program developed in the JCL development area 6 by JCL, and a JCL for writing back the JCL corrected by the JCL error notification/changing means 7 into the auxiliary storage device 2. The main part thereof is composed of the write-back means 9.

In addition, JCL human power means 3. JCL analysis means 5゜JCL error notification/changing means 7. Program execution means 8 and JC
The L write back means 9 is included in the job management system 11 , and the JCL analysis area 4 and the JCL development area 6 exist on the main storage device 12 . Also, job management system 11. The main storage device 12 and the auxiliary storage device 2 are included in the host combinator system IO to which the terminal l is connected.

Next, the operation of the program starting method of this embodiment configured as described above will be explained.

When a request is made to start a program from the terminal 1, the JCL input means 3 is first started in the host computer system 10.

The JCL input means 3 inputs JCL from the auxiliary storage device 2, stores it in the JCL analysis area 4, and passes control to the JCL analysis means 5.

The JCL analysis means 5 checks whether there are any writing errors or specification errors in the JCL stored in the JCL analysis area 4, and if there are no writing errors or specification errors, the JCL in the JCL analysis area 4 can be used to execute the program. Convert to data and JC
The program is expanded to the L expansion area 6 and control is passed to the program execution means 8.

On the other hand, if a description error or specification error is detected in the JCL stored in the JCL analysis area 4, the JCL analysis means 5 passes control along with the JCL to the JCL error notification/changing means 7.

The JCL error notification/modification means 7 notifies the terminal 1 of the JCL containing a description error or specification error, and prompts the program activation requester to modify the JCL.

JCL correctly modified by the program launch requester
is returned from the terminal 1, the JCL error notification/change means 7 receives it, and the JCL error notification/change means 7
passes the modified JCL to the JCL analysis means 5.

The JCL analysis means 5 checks the revised JCL received from the JCL error notification/change means 7 again for any description errors or specification errors, and if there is no description error or specification error, converts the revised JCL into a JCL. At the same time, the modified JCL is converted into program executable data and developed in the JCL development area 6, and control is passed to the program execution means 8.

The JCL write-back means 9 writes back the passed modified JCL to the auxiliary storage device 2.

The program execution means 8 starts the program based on data that allows the program to be executed expanded in the JCL expansion area 6.

〔Effect of the invention〕

As explained above, the present invention is based on JCL manual means.

By providing a JCL analysis means, a JCL error notification/modification means, and a program execution means, if there is an error in the JCL for starting a program, it becomes possible for the program start requester to modify the JCL in real time. This has the advantage that there is no need to issue a program startup request again after the JCL startup request is once terminated and the JCL is modified.

In addition, by providing a JCL write-back means, the JCL correctly modified by the program startup requester is written back to the auxiliary storage device, so when the program is started again with the same JCL, the error in the JCL will have been corrected.
This has the effect that the program can be started smoothly without requiring a JCL modification request to the program start requester.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a program starting method according to an embodiment of the present invention. In the figure, ■... terminal, 2... auxiliary storage device, 3... JCL input means, 4... JCL analysis area, 5... JCL analysis means, 6... JCL expansion area, 7 ... JCL error notification/change means, 8. Program execution means, 9. JCL write back means, 10. Host computer system, 11. Job management system, 12. Main storage device.

Claims (1)

[Claims] In a program startup method in a computer system, there is provided a job control language input means for inputting a job control language registered in advance on an auxiliary storage device, and a job control language input by the job control language input means. a job control language analysis means that determines whether there is an error in the job control language and expands the job control language into data that can execute the program if there is no error in the job control language; If it is determined that there is an error, the program startup requester is notified of the erroneous job control language in real time, and the job control language corrected by the program startup requester is received and returned to the job control language analysis means. job control language error notification/change means; job control language write-back means for writing back the job control language corrected by the job control language error notification/change means to the auxiliary storage device; and job control language analysis means. 1. A program starting method comprising: program execution means for starting a program based on data that allows the expanded program to be executed.