Parallel Processing - SAP ABAP

Parallel processing is a technique used to improve the performance of long-running programs by dividing the workload into smaller tasks and executing them simultaneously on multiple processors. In SAP ABAP, this can be achieved using various techniques such as Asynchronous RFC (aRFC), Remote Function Call (RFC), and Background Processing.

One way to implement parallel processing in SAP ABAP is through the use of Asynchronous RFC. This technique allows you to execute a function module on a remote system asynchronously. Here’s an example:

DATA: lt_destination TYPE TABLE OF rfcdest,
      ls_destination LIKE LINE OF lt_destination.

* Get list of available application servers
CALL FUNCTION 'TH_SERVER_LIST'
  TABLES
    list = lt_destination.

* Loop through each destination and call function module asynchronously
LOOP AT lt_destination INTO ls_destination.
  CALL FUNCTION 'Z_MY_FUNCTION_MODULE' IN BACKGROUND TASK
    DESTINATION ls_destination-rfcdest
    EXPORTING
      iv_param1 = 'value1'
      iv_param2 = 'value2'.
ENDLOOP.

In this example, we first retrieve a list of available application servers using the TH_SERVER_LIST function module. Then we loop through each destination and call our custom function module Z_MY_FUNCTION_MODULE asynchronously using the IN BACKGROUND TASK addition.

Another way to implement parallel processing in SAP ABAP is through the use of Background Processing. This technique allows you to schedule a program or report to run in the background at a specified time. Here’s an example:

DATA: ls_jobdata TYPE btcjob.

* Schedule job to run in background
SUBMIT z_my_report_program VIA JOB ls_jobdata-jobname NUMBER ls_jobdata-jobcount
  AND RETURN.

In this example, we schedule our custom report program Z_MY_REPORT_PROGRAM to run in the background using the SUBMIT statement with the VIA JOB addition.

These are just two examples of how parallel processing can be implemented in SAP ABAP. There are many other techniques that can be used depending on your specific needs and requirements.