You can override the parameters of only one output data set using
the
keyword=option parameter on the START command.
If you have defined more than one output data set, and you used IEFRDER
as the DDNAME for one of the DD statements, the keywords specified
on the START command will override the attributes of the data set
that IEFRDER defines. If you want to alter the attributes of another
data set, or more than one data set, you must:
- Use symbolic parameters in the JCL DD statements for those attributes
you want to change. You cannot use DD statement keywords as symbolic
parameters; for example, you cannot code UNIT=&UNIT;
- Assign values to the symbolic parameters in the EXEC or PROC statements
in the cataloged procedure.
- Specify keywords in the START command to override the symbolic
parameter values specified on the EXEC or PROC statements.