Runtime options that affect runtime performance
Selecting the proper runtime options affects the performance of a COBOL application.
Therefore, it is important for the system programmer responsible for installing and setting up the LE environment to work with the application programmers so that the proper runtime options are set up correctly for your installation. It is also important to understand these options so that you can set the appropriate options for specific programs, applications, and regions that require fast performance. The individual LE runtime options can be set using any of the supported methods for setting that individual option. Below examines some of the options that can help to improve the performance of the individual application, as well as the overall LE runtime environment.
Using runtime options (z/OS Language Environment Programming Guide)
Summary of Language Environment® runtime options (z/OS Language Environment Programming Reference)
Using the Language Environment runtime options (z/OS Language Environment Programming Reference)
Language Environment runtime options (z/OS Language Environment Customization)