OpenVMS Cluster Systems - OpenVMS Systems - HP

Setting Up and Managing Cluster Queues
7.3 Starting a Queue Manager and Creating the Queue Database
Command Function
/NAME_OF_MANAGER
[optional]
Allows you to assign a unique name to the queue manager. Unique
queue manager names are necessary if you run multiple queue
managers. For example, using the /NAME_OF_MANAGER qualifier
causes queue and journal files to be created using the queue manager
name instead of the default name SYS$QUEUE_MANAGER. For
example, adding the /NAME_OF_MANAGER=PRINT_MANAGER
qualifier command creates these files:
QMAN$MASTER.DAT
PRINT_MANAGER.QMAN$QUEUES
PRINT_MANAGER.QMAN$JOURNAL
Rules for OpenVMS Cluster systems with multiple system disks:
• Specify the locations of both the master file and the queue and journal files for systems that do
not boot from the system disk where the files are located.
Reference: If you want to locate the queue database files on other devices or directories, refer to
the OpenVMS System Manager’s Manual for instructions.
• Specify a device and directory that is accessible across the OpenVMS Cluster.
• Define the device and directory identically in the SYS$COMMON:SYLOGICALS.COM startup
command procedure on every node.
7.4 Starting Additional Queue Managers
Running multiple queue managers balances the work load by distributing batch
and print jobs across the cluster. For example, you might create separate queue
managers for batch and print queues in clusters with CPU or memory shortages.
This allows the batch queue manager to run on one node while the print queue
manager runs on a different node.
7.4.1 Command Format
To start additional queue managers, include the /ADD and /NAME_OF_
MANAGER qualifiers on the START/QUEUE/MANAGER command. Do not
specify the /NEW_VERSION qualifier. For example:
7.4.2 Database Files
$ START/QUEUE/MANAGER/ADD/NAME_OF_MANAGER=BATCH_MANAGER
Multiple queue managers share one QMAN$MASTER.DAT master file, but an
additional queue file and journal file is created for each queue manager. The
additional files are named in the following format, respectively:
• name_of_manager.QMAN$QUEUES
• name_of_manager.QMAN$JOURNAL
By default, the queue database and its files are located in
SYS$COMMON:[SYSEXE]. If you want to relocate the queue database files,
refer to the instructions in Section 7.6.
Setting Up and Managing Cluster Queues 7–3