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<h1 class="topictitle1">Power control system values: Message queue and library</h1>
<div><p>Specifies the message queue and library. (QUPSMSGQ)</p>
<p><span class="uicontrol">Message queue and library</span>, also known as <span class="uicontrol">QUPSMSGQ</span>,
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.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><tbody><tr><th colspan="2" valign="top" class="firstcol" id="d0e31">Quick reference</th>
</tr>
<tr><th valign="top" class="firstcol" id="d0e34">Location</th>
<td valign="top" headers="d0e34 ">In iSeries™ Navigator,
select your system, <span class="menucascade"><span class="uicontrol"></span> &gt; <span class="uicontrol">Configuration
and Service</span> &gt; <span class="uicontrol">System Values</span> &gt; <span class="uicontrol">Power
Control</span> &gt; <span class="uicontrol">General</span></span></td>
</tr>
<tr><th valign="top" class="firstcol" id="d0e52">Special authority</th>
<td valign="top" headers="d0e52 ">None</td>
</tr>
<tr><th valign="top" class="firstcol" id="d0e57">Default value</th>
<td valign="top" headers="d0e57 ">Message queue - QSYSOPR; Library - QSYS</td>
</tr>
<tr><th valign="top" class="firstcol" id="d0e62">Changes take effect</th>
<td valign="top" headers="d0e62 ">Immediately</td>
</tr>
<tr><th valign="top" class="firstcol" id="d0e67">Lockable</th>
<td valign="top" headers="d0e67 ">No</td>
</tr>
</tbody>
</table>
</div>
<div class="section"><h4 class="sectiontitle">What can I do with this system value?</h4><p>You may specify
the name of a message queue that is to receive uninterruptible power supply
messages.</p>
<p>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.</p>
<p>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.</p>
<ul><li>The message queue specified in this system value must exist.</li>
<li>If the message queue is a workstation message queue (or system operator),
it must be in break or notify mode.</li>
<li>If the message queue is not a workstation message queue, it must be allocated
by a job.</li>
</ul>
<p>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.</p>
<p>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.</p>
<p>The
message queue must exist in the system disk pool (also known as auxiliary
storage pool) or in a basic user disk pool.</p>
</div>
<div class="section"><h4 class="sectiontitle">Where can I get more information about this system value?</h4><p>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.</p>
</div>
</div>
<div><div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzakzpoweroverview.htm" title="Use power control system values to control the system's power supply values.">System values: Power control overview</a></div>
</div>
<div class="relinfo"><strong>Related information</strong><br />
<div><a href="rzakzfinder.htm">System value finder</a></div>
</div>
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