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DB2 Manager User Guide 41
StorageTek Proprietary
Requirement: Optional
Default: 0
Validation: nnnn = 1-4 digit numeric value in range 0 - 1440
Use: The RETAINTAPE parameter specifies the number of minutes
for which a tape is to remain mounted after all outstanding
retrieval requests from that tape have been processed by the
DB2 Manager control region.
A tape which has not been referenced for the specified interval
will be automatically dismounted. A dismount of a tape may
be forced by DB2 Manager prior to expiration of this time
interval if no free tape drive is available for allocation of a new
tape volume, and the tape is the least-recently referenced of
all currently mounted tape volumes.
A value of 0 indicates that tapes will be dismounted
immediately after the last outstanding request for retrieval from
each tape has been processed.
A value of 1440 indicates that tapes are held permanently on a
drive until a dismount is forced when there are no free tape
drives to satisfy a new request (as described above), or until
termination of the DB2 Manager control region.
Notes: This setting may be varied during DB2 Manager operation via
the 'SET RETAINTAPE' operator command.
If this parameter is omitted, a default value of RETAINTAPE=0
will be used.
TAPECNTL: TAPEWAIT
TAPEWAIT = nnnn
Requirement: Optional
Default: 0
Validation: nnnn = 1-4 digit numeric value in range 0 - 1440
Use: TAPEWAIT is an optional parameter which is used to control
whether retrieval requests for tape-resident Archive Manager
objects which cannot be immediately satisfied are rejected
(with a ‘resource unavailable’ reason code) or queued
internally until a tape retrieval resource becomes available, or
until a maximum wait limit has been exceeded. ‘nnnn’ must
be a 1-4 digit numeric character string in the range 0-1440,
which specifies the maximum number of minutes for which
requests are to be queued internally.