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how GDGs are concatinated?
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Answer / nygrande
If we use the base of the GDG only, all generations will be
concatenated.
If we want to use specific GDG generations, we can code as:
//FILEA DD DSN=NAME.OF.FILE(-5),DISP=SHR
// DD DSN=NAME.OF.FILE(-2),DISP=SHR
// DD DSN=NAME.OF.FILE(-1),DISP=SHR
// DD DSN=NAME.OF.FILE(0),DISP=SHR
or use the GDG complete DSN, as G0000V00. For example:
//FILEA DD DSN=NAME.OF.FILE.G0001V00,DISP=SHR
// DD DSN=NAME.OF.FILE.G0003V00,DISP=SHR
// DD DSN=NAME.OF.FILE.G0004V00,DISP=SHR
// DD DSN=NAME.OF.FILE.G0005V00,DISP=SHR
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