Processing Programs › Executing a Program › Altering the Runtime Environment

Altering the Runtime Environment

CA Ideal allows the resources an application uses to change based on the environment where the application is run. You can set these changes to apply to all users and applications running at a particular site, for a particular user for applications run during a session, or they can be determined dynamically by the application based on the environment where the application runs. You can make these changes without changing the application, recompiling the program, or changing the status of the application.

The modifications that you can make are:

• You can run CA Datacom/DB native dataviews against different databases than those assigned when the dataviews were cataloged.
• You can assign sequential dataviews in VSE a different device, block size, and file name.
• You can assign the reports an application generates to different printers than the printers established in the RUN command or as the default session or site printers. You can also give reports a different page size.
• You can substitute subprograms in test status for production status subprograms without recompiling the calling program.
• You can change the authorization ID for SQL objects a program accesses at runtime.

In most instances, you can accomplish these changes in three ways:

• The CA Ideal administrator can modify the object code for the application to reflect the change. This is done with ALTER commands, which are described in the Command Reference Guide.
• You can specify ASSIGN commands to modify the run environment for the current session. This section describes the ASSIGN commands. You can display all ASSIGN commands in effect by issuing the DISPLAY SESSION OPTIONS command.
• You can select some environment options dynamically using the PDL statements ASSIGN REPORT and ASSIGN DATAVIEW. The PDL statements are fully described in the Programming Reference Guide.