Technical data

3.3.8 Enabling SET VERIFY When Initializing the Queue (P8)
You can specify the setting of the SET VERIFY command for the
DCPS$EXECUTION_QUEUE.COM command procedure. The default setting
is NOVERIFY, to save log file space and console log space. If P8 contains
1, then SET VERIFY is enabled, which is useful for diagnosing problems in
the printer startup file. (Refer to the OpenVMS DCL Dictionary for more
information about the SET [NO]VERIFY command.)
3.4 Customizing Execution Queue Behavior
You can alter the behavior of DCPS print symbionts and their corresponding
execution queues in a number of ways, several of which are described in this
section. Other options are listed in Appendix B, along with general guidelines
for making the changes. Some customizations apply to all DCPS queues while
others apply only to queues that you specify.
3.4.1 Running DCPS as a Multistreamed Process
A DCPS symbiont is capable of running as a multistreamed process. As a
multistreamed symbiont process, one DCPS process can run more than one
DCPS execution queue. A new DCPS process is not started every time a DCPS
print queue is started, but only when all current processes are supporting a
specified maximum number of queues (‘‘streams’’). The number of queues that
a DCPS symbiont process will support is determined by the value of the logical
DCPS$MAX_STREAMS when the process is started.
DCPS can be configured to support up to 32 execution queues per DCPS
symbiont process. The logical DCPS$MAX_STREAMS is used to specify the
number of queues per DCPS symbiont process. To define this logical, specify
the following command in your DCPS$STARTUP.COM file (a template is
provided in DCPS$STARTUP.TEMPLATE) and substitute the number of
queues per process to use. If this logical is not defined, a DCPS process will
support only one (1) execution queue.
$ DEFINE/SYSTEM/EXECUTIVE DCPS$MAX_STREAMS max-number
Execute your DCPS$STARTUP.COM file to enable this logical and start your
queues with DCPS as a multistreamed process.
A DCPS process terminates only when all queues associated with the process
are stopped.
3–10 Creating and Modifying Print Queues