what happens when a program is getting installed and running

sid_aec · New User Joined: 01 Jul 2008 Posts: 60 Location: Kolkata

Can anybody give me brief idea about what happens when a program is getting installed and at the same time the program is running through a Job.
Is it the job will get abend?? Kindly share some knowledge on this..

Robert Sample · Posted: Wed Jun 10, 2009 6:42 pm

When the program is executed, it is loaded into memory. Once loaded into memory, the disk copy can be replaced by doing an install or whatever else without impacting the executing program. This assumes that the program is not a subroutine being dynamically called with reloads.

If the program is CICS, the newcopy will not occur until the program can be updated.