suppose your 4 dd statements inside a proc are as below //myproc PROC

In a proc i will concatinate 4 dd statements.i want to
overide 3 dd statement through jcl how?

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Answer Posted / y@$w@nth

suppose your 4 dd statements inside a proc are as below

//myproc PROC
//STEP01 EXEC PGM=progname
//DD01 DD DSN=userid.base.file1
//DD02 DD DSN=userid.base.file2
//DD03 DD DSN=userid.base.file3
//DD04 DD DSN=userid.base.file4
// PEND
//STEP02 myproc
//STEP01.DD03 DD DSN=userid.base.orfile3
//

STEP01.DD03 DD DSN=userid.base.orfile3 this tells that
override the DD statement which name is DD03 inside a proc
myproc and inside STEP STEP01

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