How to concatenate two GDG's into single GDG? What are the steps involved?

Voyageur

 Profile Answers by Voyageur 

• Dec 4th, 2007

 

You can use either IDCAMS, IEBGENER, a SORT utility or a COBOL program, as you wish.  Just code the two input GDG files as shown in the SAMPLE1 statement,
and code the output statement as shown in the SAMPLE2 statement below:

//SAMPLE1  DD DSN=node1.node2.node3(n1),
//                      DISP=SHR
//                DD DSN=node1.node2.node3(n2),
//                      DISP=SHR
//SAMPLE2  DD DSN=node1.node2.node3(+1),
//                      DISP=(NEW,CATLG,DELETE),
//                      UNIT=SYSDA,
//                      SPACE=(whatever),
//                      DCB=(modeldscbname,RECFM=xx,LRECL=nnn,BLKSIZE=0)

You can allocate ALL of the files in a GDG by omitting the version number,
as shown in SAMPLE3:
 
//SAMPLE3  DD DSN=node1.node2.node3,    <-- note! no (0), (-1), (+1) etc.
//                      DISP=SHR

I hope this helps!