File Management - IBM

40 File Management V4R5
application program specifies the OUTPUT printer file). In addition to having the
application program use the printer file REPORTS, you want to produce three
copies. Assume that the following command created the file REPORTS:
CRTPRTF FILE(REPORTS) SPOOL(*YES) +
PAGESIZE(68 132) LPI(8) OVRFLW(60) +
COPIES(2) FILESEP(1)
Before you run the program, type the following command:
OVRPRTF FILE(OUTPUT) TOFILE(REPORTS) COPIES(3)
Then call the application program, and the program produces three copies of the
output using the printer file REPORTS.
Note that this is not equal to the following two override commands:
Override 1 OVRPRTF FILE(OUTPUT) TOFILE(REPORTS)
Override 2 OVRPRTF FILE(REPORTS) COPIES(3)
Only one override is applied for each call level for an open of a particular file;
therefore, if you want to override the file that the program uses and also override
the attributes of the overriding file from one call level, you must use a single
command. If you use two overrides, the first override uses the printer file
REPORTS to print the output. The system ignores the second override.
Overriding the scope of an open file
To change the scope of a file open operation, use the open scope (OPNSCOPE)
parameter on the appropriate override command. The values for the OPNSCOPE
parameter can be either *JOB or *ACTGRPDFN (default). Use this parameter to
change the scope of an open operation from the call level number or activation
group level to the job level.
For example, the following override command scopes the open operation of the
BILLING file to the job level:
OVRDBF FILE(BILLING) OPNSCOPE(*JOB)
How the system processes overrides
Figure 4 on page 41 shows a representation of a job running in the integrated
language environment.