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Combining Multiple DSN Catalogs into a Single DSN Catalog (TSIDCMRG) The TSIDCMRG Program

Chapter. 6 Additional BIM-EPIC Utilities 6-71

4. Message EP800 will be issued after each TSIDUTL program BACKUP function input

dataset version has been read to control the number of TSIDUTL program BACKUP

function input dataset versions to be processed.

Each BIM-EPIC DSN Catalog dataset name must be unique. Therefore, if a dataset name is

encountered that duplicates a dataset name previously read, the duplicate dataset name and all

the versions (including tape volume serial numbers) associated with that duplicate dataset

name will be discarded. Each occurrence of a duplicate dataset name will be included on a

SYSLST output report.

Each tape volume serial number found in the BIM-EPIC DSN Catalog must also be unique,

regardless of which dataset name owns that volume serial number. Therefore, if a duplicate

tape volume serial number is encountered that duplicates a tape volume serial number

previously read, that tape volume serial number will be discarded. Each occurrence of a

duplicate tape volume serial number will be included on a SYSLST output report.

Up to three dataset names may be automatically defined in a BIM-EPIC Catalog that can

cause these incompatibilities:

• *EPIC.EVENT.DSN* is automatically defined when the BIM-EPIC job scheduling

system is utilized. An entry under this dataset name is created when an event is posted

and that entry is removed when the event is deleted. To avoid this incompatibility, assure

there are no outstanding events (which appear as versions under this dataset name) prior

to creating the TSIDUTL program BACKUP function dataset,. When the TSIDCMRG

program processes the second (and subsequent, if any) occurrence of this dataset name, it

will discard each duplicate and no harm will be done.

•

** DSN DELETED ** is automatically defined when a dataset name containing tape

versions is deleted (not purged) from the BIM-EPIC Catalog. The delete function

removes a dataset from the BIM-EPIC Catalog and all tapes associated with that dataset

name become scratch tapes. Since the design of BIM-EPIC requires that every tape be

associated with a dataset name, these scratch tapes become associated with the ** DSN

DELETED ** dataset name. To avoid this incompatibility, rename the ** DSN

DELETED ** dataset to a different dataset name that will be unique among all the BIM-

EPIC Catalogs to be merged prior to creating the TSIDUTL program BACKUP function

dataset. Once the TSIDCMRG process has been completed and the merged catalog

backup has been restored, delete each of these renamed datasets.

•

***.VOLUME.DSN.** is automatically defined when the TSIDINIT program is run to

initialize new tape volumes. As each tape volume is successfully initialized, that tape

volume becomes a scratch tape associated with the ***.VOLUME.DSN.** dataset name.

To avoid this incompatibility, rename the ***.VOLUME.DSN.** dataset to a different

dataset name that will be unique among all the BIM-EPIC Catalogs to be merged prior to

creating the TSIDUTL program BACKUP function dataset,. Once the TSIDCMRG

process has been completed and the merged catalog backup has been restored, delete each

of these renamed datasets.

User defined datasets with names that are duplicated among the BIM-EPIC Catalogs and are

names not involved with a multi-dataset group can be renamed to a different dataset name that

will be unique among all BIM-EPIC Catalogs to be merged prior to creating the TSIDUTL

program BACKUP function dataset. Once the TSIDCMRG function has been completed and

Conditions

Causing

Incompatibilities

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