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Scratch Functions Maintaining the DSN Catalog (TSIDUTL)
6-14 BIM-EPIC Installation and System Guide
Scratch Functions
BIM-EPIC does not automatically scratch datasets. When a dataset version has satisfied all its
retention criteria, it becomes eligible for scratch. For information about scratch eligibility, see
“Rules for Dataset Retention" in the User Reference.
Running a scratch through the entire catalog may not always be suitable, and there are
alternatives. If you wish to scratch a single dataset only, use the SCRATCH function of
TSIDMNT. If you want a list of current scratch tapes, you can use the DSPLY SCRATCH
function of TSIDUTL.
BIM-EPIC can now scratch backup/archive datasets created by CA-EPIC for CMS. CA-EPIC
for CMS is responsible for placing then in scratch status.
Function Action
SCRATCH Puts all eligible dataset versions in scratch status and produces a report
of all new scratch tapes.
DSCRATCH Scratches disk datasets only.
TSCRATCH Scratches tape datasets only and produces a report of all new scratch
tapes.
PSCRATCH Produces a report projecting which datasets and tapes will be scratched
by any date you specify. PSCRATCH does not project the expiration of
disk datasets.
If Automatic Cartridge Libraries (ACL) are being supported, SCRATCH and TSCRATCH
will set scratched tape volumes to “scratched” status in the ACL inventory.
Switch Action
UPSI xx1xxxxx Prevents scratch of open datasets.
UPSI xxxxx1xx Prevents scratch of any dataset created today.
SORTWK1 is required. SORTWK1 must be large enough to contain a 300-byte record for
every tape volume serial number to be scratched or projected as scratch.
WORK is required. WORK must be large enough to contain an 50-byte record for every
multi-dataset tape volume serial number to be scratched or projected as scratch. For tape-only
systems, if a VSAM/SAM dataset is used for the WORK dataset, specify RECSIZE=50.
Description
TSIDUTL Scratch
Functions
UPSI Values
Dataset
Requirements
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