Organizing PL/I modules for use with the PL/I Optimizer

You can decrease response time for those IMS applications that use the PL/I Optimizer by organizing the PL/I modules.

You can organize PL/I modules by:

• Using several different program libraries, one for each region. Put only those modules required by the application in the library. Include in that library all supporting modules (such as the PL/I transient library modules).
• Concatenating the PL/I library into the message region STEPLIB.
• Putting the required supporting modules in the link pack area. This is the recommended long-term solution for a virtual environment.
• Using IMS PRELOAD on the modules.

Attention: Do not use the PL/I Optimizing Compiler for multitasking during binding. Do not use SYS1.PLITASK as a SYSLIB data set.