Alter the Attributes of a Generation Data Group: Example 4
This example modifies the attributes of a generation data group.
Because the attributes are cataloged in the generation data group's
base catalog entry, only this entry is modified.
//ALTER3 JOB ...
//STEP1 EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=A
//SYSIN DD *
ALTER -
GDG01 -
NOEMPTY -
SCRATCH
/*
The ALTER command modifies some of the attributes of generation
data group GDG01. The new attributes override any previously used
for the GDG. Its parameters are:
- GDG01 identifies the object to be modified.
- NOEMPTY uncatalogs only the oldest generation data set when the maximum number of cataloged generation data sets is exceeded.
- SCRATCH removes the generation data set's DSCB from the volume VTOC when the data set is uncataloged. If the data set is SMS-managed, the NVR is also removed.