Joined: 01 Sep 2006 Posts: 2086 Location: Silicon Valley
Between those two, my preference is to have a setup exec that allocates the right application libraries and then later in the application logic use
It is a maintenance concern rather than performance.
1. if the setup is actually in linklib, then the rexx program can run without changes.
2. if the application is distributed to other systems, then the rexx program can run without changes. Otherwise, you might have RACF access problems.
3. You want the customization to be done in a short setup exec, rather than have the installer search and make changes throughout your rexx programs.