Power control system values: Message queue and library

Specifies the message queue and library. (QUPSMSGQ)

Message queue and library, also known as QUPSMSGQ, is a member of the power control category of i5/OS™ system values. You can use this system value to specify the message queue that is to receive uninterruptible power supply messages and the library where the specified message queue is found. To learn more, keep reading.

Quick reference
Location	In iSeries™ Navigator, select your system, > Configuration and Service > System Values > Power Control > General
Special authority	None
Default value	Message queue - QSYSOPR; Library - QSYS
Changes take effect	Immediately
Lockable	No

What can I do with this system value?

You may specify the name of a message queue that is to receive uninterruptible power supply messages.

If the message queue is not the system operator message queue, then all uninterruptible power supply messages are also sent to the system operator message queue. This system value is meaningful only if your system has the battery power unit feature and has an uninterruptible power supply attached.

When a change in power activates the uninterruptible power supply, this message queue receives the uninterruptible power supply activated message (CPF1816). If the action to take when power failure occurs is set to not automatically power down the system, the following conditions must be met or the system immediately begins to power down.

The message queue specified in this system value must exist.
If the message queue is a workstation message queue (or system operator), it must be in break or notify mode.
If the message queue is not a workstation message queue, it must be allocated by a job.

For all other uninterruptible power supply messages, the message queue does not have to be allocated, or in break or notify mode. If this system value does not specify the name of a valid message queue, a message is sent to the system operator indicating the notification failure, and the system continues processing.

The specified message queue is cleared during a restart. If you assign this value a user's message queue, the user loses all messages in the specified message queue during each restart.

The message queue must exist in the system disk pool (also known as auxiliary storage pool) or in a basic user disk pool.

Where can I get more information about this system value?

To learn more, go to the power control system values overview topic. If you are looking for a specific system value or category of system values, try using the i5/OS system value finder.