Call i5/OS programs and procedures from your i5/OS PASE programs

i5/OS™ PASE provides methods for calling ILE procedures, Java™ programs, OPM programs, i5/OS APIs, and CL commands that give you integrated access to i5/OS functions.

General configuration requirements for i5/OS programs and procedures

When you make calls from the i5/OS PASE program environment to the i5/OS environment, you should generally ensure that the i5/OS program is compiled with *CALLER for the activation group, for the following reasons:

Only code that runs in the activation group that started i5/OS PASE (called by the Qp2RunPase API) can use ILE APIs, such as Qp2CallPase, to interact with the i5/OS PASE program.
The ILE runtime might end the entire job (also ending i5/OS PASE) if it needs to destroy an activation group in a multithreaded job (and all jobs created by i5/OS PASE fork are multithread-capable). By using ACTGRP(*CALLER), you can prevent your job from ending before you want it to end.

You can avoid problems with running in a multithread-capable job by using the systemCL() runtime function to run a CL command (including the CALL command) in a separate job that is not multithread-capable.

Call ILE procedures
You can follow the instructions in this topic to prepare and call ILE procedures from your i5/OS PASE programs.
Call i5/OS programs from i5/OS PASE
You can take advantage of existing i5/OS programs (*PGM objects) when you create your i5/OS PASE applications. In addition, you can use the systemCL() function to run the CL CALL command.
Run i5/OS commands from i5/OS PASE
You can extend the capabilities of your i5/OS PASE program by running control language (CL) commands that use i5/OS functions.

Parent topic: Use i5/OS PASE programs in the i5/OS environment