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24 DB2 Manager User Guide
StorageTek Proprietary
Primary or secondary DB2 Manager tape datasets will be released under the
following circumstances:
• The Archive Manager tape backup utility will automatically uncatalog
backup datasets which are being recreated during the migration process
(this will occur when objects are added to a partially-used volume during
the migration process; the backup of the partially-used volume will be
released).
• The Archive Manager tape database management utility will release
volumes from within a storage group database which contain less than a
user-supplied threshold of active objects. Released volumes will be
automatically uncataloged by the utility if the AUTOUNCAT option has
been specified for that storage group database via the Archive Manager
database maintenance facility.
h. Perform STK Host Software Component (HSC) changes.
The relevant modifications should be made to the HSC software which
controls operation of the StorageTek library configuration and environment, in
order to ensure that scratch tapes used during the DB2 Manager object
migration process are located within the library configuration. All Archive
Manager tape datasets will have a high level qualifier as specified during the
Archive Manager database definition procedure (see page 27).
It is essential for object retrieval processing that all primary volumes within an
Archive Manager database can be mounted automatically in response to an
object recall request. For this reason, all such cartridges should be located
within a StorageTek library configuration.
Appropriate controls should also be established to handle creation of backup
and duplex tape datasets as required (eg) use scratch tapes from non-library
drives with automatic cartridge loaders (for subsequent storage on library
shelving), or use scratch tapes from within a remote library configuration (for
automatic offsite storage).
Refer to the relevant StorageTek manual, or contact your StorageTek
Software Support Representative (SSR) for details on how to implement the
above controls.
i. Update automated reply software controls.
Occasionally, it may happen that there are no tape drives available to satisfy
a request from DB2 Manager for object retrieval from a non-mounted tape
volume.
When this occurs, normal allocation recovery processing will be performed by
the host system control program, resulting in the display of message IEF247I
followed by the following message:
IEF238D jjj - REPLY DEVICE NAME, 'WAIT' OR CANCEL'
While this reply is outstanding, DB2 Manager will be unable to service the
request which caused allocation recovery to be entered.