Use the DEF system option to have a default keep date to be assigned based on the data set name. This option dynamically builds user table TLMSDTAB. No masking characters should be used in data set name definitions in the DEF option.
This system option has the following format:
DEF=[dsname|$DEFAULT$], [POS=nn], [DAYS=nnn]
(Optional) Specifies the number of days the data set is to be retained.
Default: 7
Specifies the data set name or prefix for retention. DSN=$DEFAULT$ generates a default KEEPDATE value for all data sets that do not match entries in the table.
(Optional) Specifies the starting position in a data set name.
Default: 1
A maximum of 128 DEF= statements may be supplied..
Examples: DEF System Option
DEF=DEF.AAA,DAYS=3 DEF=DEF.BBB DEF=$DEFAULT$,DAYS=3 Base default assigned when no match is found)
This example uses the POS parameter with data set names.
PYR043.MONTHLY.DATA PYR042.MONTHLY.DATA1 PYR055.MONTHLY.ROLL
The above data set names would be controlled by the following DEF definition:
DEF=MONTHLY,POS=8,DAYS=10
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