Technical data

Setting Up and Maintaining Queues
14.6 Using Queue Options
14.6.3.6 Deleting Characteristics
To delete a characteristic definition, enter DELETE/CHARACTERISTIC. You
must specify the characteristic-name with DELETE/CHARACTERISTIC.
If you know the number assigned to the characteristic but do not know the name,
enter SHOW QUEUE/CHARACTERISTICS to display the names and numbers
assigned to characteristics on the system.
If the system displays the following messages, a queue or job refers to the
characteristic:
%DELETE-E-NOTDELETED, error deleting characteristic
-JBC-E-REFERENCED, existing references prevent deletion
You must remove all references to the characteristic before you can delete the
characteristic. For information about removing references to a characteristic, see
Section 14.8.5.
14.6.4 Specifying Batch Processing Options
You can use queue options to control batch job performance and the use of system
resources by processes executing batch jobs.
Use the following qualifiers with INITIALIZE/QUEUE, START/QUEUE, or SET
QUEUE to set these queue options:
Qualifier Description
/JOB_LIMIT=n Specifies the number of jobs that can execute concurrently in the
queue.
/[NO]DISABLE_
SWAPPING
Specifies whether the processes running jobs on the queue can
be swapped in and out of memory.
/CPUDEFAULT=time Specifies the default CPU time limit for all jobs in the
queue. The time cannot exceed the time limit set with the
/CPUMAXIMUM qualifier.
/CPUMAXIMUM=time Specifies the maximum CPU time limit for all jobs in the queue.
Although the following qualifiers are not specific to batch queues, they are
commonly used to control batch job performance and the use of system resources
by batch processes:
Option Description
/BASE_
PRIORITY=n
Specifies the base process priority at which jobs are initiated from a
batch queue.
/WSDEFAULT=n Specifies the default working set size for jobs executed in a batch
queue. (For output queues, specifies the default working set size for
symbiont processes.)
/WSEXTENT=n Specifies the working set extent for jobs executed in a batch queue.
(For output queues, specifies the working set extent for symbiont
processes.)
/WSQUOTA=n Specifies the working set quota for jobs executed in a batch queue.
(For output queues, specifies the working set quota for symbiont
processes.)
For more information about these limits, quotas, and priorities, refer to the
following manuals:
• The INITIALIZE/QUEUE command in the OpenVMS DCL Dictionary
14–32 Setting Up and Maintaining Queues