Use overrides

You can use overrides to temporarily change a file name, a device name associated with the file, or some of the other attributes of a file.

Overrides allow you to make minor changes in how a program functions. Overrides allow you to select the data, on which they operate, without recompiling the program. These topics explain how to use overrides on iSeries™:

• Overrides: An overview
  An override is a CL command that temporarily changes a file name, a device name, or remote location name associated with the file, or some of the other attributes of a file.
• Apply overrides
  You can perform two general types of overrides, which are file overrides and overrides for program device entries.
• Delete overrides
  When a program that has been called returns control to the calling program, the server deletes any overrides specified in the call level of the called program.
• Display overrides
  You can use the Display Override (DSPOVR) command to display file overrides at the job level, the activation group level, and at multiple call levels for a job. You can display all file overrides or overrides for a specific file.
• Redirect files
  File redirection lets you use overrides to direct data input or output to a device of a different type; for example, to send data that was intended for a diskette to a printer instead. This use of overrides requires somewhat more foresight than the override applications listed above, because the program must be able to accommodate the different characteristics of the two devices involved.