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The Question is: How is the upper limit for the queue entry numbers set? Is there a default top number and can it be modified? Thanks, Chuck The Answer is :
Topics (584), (1905), and (2685) will be of interest.
The queue entry number is an opaque longword value, and must always
be treated as an opaque longword value.
The details of the algorithm used to determine the entry number and the
range of entries in use are not documented and are subject to change.
In practice, the range of queue entry numbers depends on the peak number
of jobs that are queued or that are retained on queues controlled by a
particular queue manager. In effect, the queue manager will expand the
range to accomodate as many entries as required. Other queue-related
attributes can expand the range of numbers used, as well.
There is no manual mechanism for the control of the range used, though
you can certainly rebuild the queue database should the entry number
encounter a transient "spike" due to an unusually large number of jobs.
Applications should consider the entry number to be an opaque longword
(32-bit insigned integer) and should not make any assumptions about its
value, sequence, or range.
The only supported means for resetting the queue manager's "memory" of
the peak number of entries is to reinitialise the queue manager
$ START/QUEUE/MANAGER/NEW
Note that there is a finite limit to the maximum number of entries
that a queue manager can handle. To the knowledge of the OpenVMS
Wizard, this value has never been reached by any site through normal
means -- beyond degenerate application cases that are intended to
fill up the database, that is.
Again, the queue entry number is an opaque longword value.
Related topics include (584), (1905), and (2685).
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