Granted Patent B2

US 10,135,749 · App. 14/087,601 · Granted Nov 20, 2018

Abstract

Claims (41)

1. A computer-implemented method that aids in migrating a mainframe application from a mainframe to another platform, the method comprising:

transferring copies of mainframe components of the mainframe application from the mainframe to a computer system;

executing one or more stat generators on the computer system that parse the transferred copies of the mainframe components to extract legacy statistical information regarding cross references between jobs of the mainframe application and procedures used by the jobs;

transferring the extracted legacy statistical information to a database staging area of an application server;

executing a transformation component on the application server that reads the extracted legacy statistical information from the database staging area, transforms the read legacy statistical information into a predefined format, and populates operational tables of the application server with the transformed legacy statistical information;

generating, with the application server from the transformed legacy statistical information, at least one report that describes structural aspects of the mainframe application; and

presenting, via the computer system, the at least one report to facilitate migration of the mainframe application to the another platform.

2. The computer-implemented method of claim 1 , wherein said executing the one or more stat generators further parses the jobs of the mainframe application to extract further legacy statistical information regarding steps and programs of each procedure used by the jobs.

3. The computer-implemented method of claim 1 , further comprising said executing the one or more stat generators further parses each program used by the jobs of the mainframe application to extract further legacy statistical information regarding the programs used by the jobs.

4. The computer-implemented method of claim 1 , further comprising said executing the one or more stat generators further parses each program used by the jobs of the mainframe application to extract further legacy statistical information regarding copybooks used by each program.

5. The computer-implemented method of claim 1 , wherein said executing the one or more stat generators further parses the jobs of the mainframe application to extract further legacy statistical information regarding procedures, steps, programs, and files used by each job mainframe application.

6. The computer-implemented method of claim 1 , wherein said executing the one or more stat generators further parses the jobs of the mainframe application to extract further legacy statistical information regarding dataset tables used by the jobs and CRUD (create, read, update, delete) operations performed on the dataset tables.

7. The computer-implemented method of claim 1 , further comprising:

identifying datasets used by the mainframe application;

identifying programs of the mainframe application that create and/or access the identified datasets;

parsing the identified programs to extract further legacy statistical information comprising record layout information for the identified datasets; and

generating at least one report that provides information regarding the record layout information for the identified datasets and usage of the identified datasets by the identified programs.

8. The computer-implemented method of claim 7 , further comprising parsing copybooks referenced by the identified programs to extract further record layout information for the identified datasets.

9. The computer-implemented method of claim 1 , wherein said executing the one or more stat generators further parses job files, wherein each job file defines a job and specifies steps to be executed as a result of executing the job.

10. The computer-implemented method of claim 1 , wherein said executing the one or more stat generators further parses job files, wherein each job file defines a job and specifies, in a job control language, steps to be executed as a result of executing the job.

11. The computer-implemented method of claim 1 , wherein said executing the transformation component derives further legacy statistical information from the read legacy statistical information.

12. One or more non-transitory computer-readable storage devices comprising a plurality of instructions, that in response to being executed, cause:

a computer system to:

transfer copies of mainframe components of a mainframe application from a mainframe to the computer system;

execute one or more stat generators that parse the transferred copies of the mainframe components to extract legacy statistical information regarding cross references between jobs of the mainframe application and procedures used by the jobs;

transfer the extracted legacy statistical information to a database staging area of an application server; and

present at least one report that describes structural aspects of the mainframe application; and

the application server to:

execute a transformation component that reads the extracted legacy statistical information from the database staging area, transforms the read legacy statistical information into a predefined format, and populates operational tables of the application server with the transformed legacy statistical information; and

generate, from the transformed legacy statistical information, the at least one report that describes structural aspects of the mainframe application.

13. The one or more non-transitory computer-readable storage devices of claim 12 , wherein the plurality of instructions further cause the computer system to parse the jobs of the mainframe application to extract further legacy statistical information regarding steps and programs of each procedure used by the jobs.

14. The one or more non-transitory computer-readable storage devices of claim 12 , wherein the plurality of instructions further cause the computer system to parse the jobs of the mainframe application to extract further legacy statistical information regarding dataset tables used by the jobs and CRUD (create, read, update, delete) operations performed on the dataset tables.

15. The one or more non-transitory computer-readable storage devices of claim 12 , wherein the plurality of instructions further cause:

the computer system to:

identify datasets used by jobs of the mainframe application;

identify programs of the mainframe application that create and/or access the identified datasets; and

parse the identified programs to extract further legacy statistical information comprising record layout information for the identified datasets; and

the application server to generate the least one report that further provides information regarding the record layout information for the identified datasets and usage of the identified datasets by the identified programs.

16. The one or more non-transitory computer-readable storage devices of claim 15 , wherein the plurality of instructions further cause the computer system to parse copybooks referenced by the identified programs to extract further record layout information for the identified datasets.

17. The one or more non-transitory computer-readable storage devices of claim 12 , wherein the plurality of instructions further cause the computer system to parse job files, wherein each job file defines a job and specifies steps to be executed as a result of executing the job.

18. The one or more non-transitory computer-readable storage devices of claim 12 , wherein the plurality of instructions further cause the application server system to derive, via execution of the transformation component, further legacy statistical information from the read legacy statistical information.

Assignments (18)