Example of the GDGORDER parameter

Example 1: The following example GDG has a base name D24PP1.SMF.DATA and three generation data sets:

D24PP1.SMF.DATA.G0001V00 
D24PP1.SMF.DATA.G0002V00 
D24PP1.SMF.DATA.G0003V00

The following DD statement overrides the default LIFO specification and creates a FIFO data set concatenation to be read by the job step program:

//SMFDATA DD DSN=D24PP1.SMF.DATA,DISP=SHR,GDGORDER=FIFO

Data is read from the data sets in the specified order.

The following concatenation is used:

//SMFDATA DD DSN=D24PP1.SMF.DATA(-2),DISP=SHR
//        DD DSN=D24PP1.SMF.DATA(-1),DISP=SHR
//        DD DSN=D24PP1.SMF.DATA(0),DISP=SHR

The concatenation is resolved as the following code:

//SMFDATA DD DSN=D24PP1.SMF.DATA.G0001V00,DISP=SHR
//        DD DSN=D24PP1.SMF.DATA.G0002V00,DISP=SHR
//        DD DSN=D24PP1.SMF.DATA.G0003V00,DISP=SHR