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<h1 class="topictitle1">Work with monitors</h1>
<div><p>Use Management Central monitors to check on your system performance,
your jobs and servers, your message queues, and changes to selected files.</p>
<p>You can specify thresholds for various metrics on these monitors, and then
specify actions to be taken whenever a monitor detects that a threshold has
been triggered. For example, you can run an i5/OS™ command or start a program when the
threshold is triggered. For specific examples that describe how you can use
these monitors, see the related concept Scenarios: Performance.</p>
<p>You can use a <dfn class="term">system monitor</dfn> to see detailed graphs that monitor
the real-time performance of multiple iSeries™ servers. In the Graph History
window, you can see a graphical view of the metrics that have been collected
for an extended period of time by Collection Services. You can contrast this
data with the real-time data for the last hour shown in a System Monitor window.</p>
<p>You can monitor your jobs and servers with a <dfn class="term">job monitor</dfn>.
For example, you might want to monitor a job's CPU usage, job status, or job
log messages. For each of those metrics, you can specify a threshold and
actions to take when that threshold is triggered. For example, you could set
up your monitor to send a message to the system operator whenever the CPU
usage exceeds a certain threshold. In addition to the i5/OS commands, you can use the Advanced
Job Scheduler Send Distribution using JS (SNDDSTJS) command to notify someone
by e-mail when the threshold is exceeded, if the Advanced Job Scheduler licensed
program 5722-JS1 is installed on the endpoint system.</p>
<p>You can create a <dfn class="term">message monitor</dfn> to take action on a list
of messages that are important to you. For example, when the message monitor
detects CPI0953 (threshold of a disk pool is exceeded), you could specify
to run a command that would delete objects that you no longer need from the
disk pool.</p>
<div class="p">You can use a <dfn class="term">file monitor</dfn> to monitor for a specified text
string or for a specified size. Or, you can monitor for any modification to
one or more selected files. You can select one or more files to be monitored,
or you can select the History log option, which will monitor the i5/OS history
log (QHST).<div class="note"><span class="notetitle">Note:</span> <img src="./delta.gif" alt="Start of change" />Integrated file system treats
QSYS physical files as directories, with the physical file members actually
treated as files.<img src="./deltaend.gif" alt="End of change" /></div>
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<p>You can use a <dfn class="term">B2B activity monitor</dfn> to view a graph of active
transactions over time, and you can run commands automatically when thresholds
are triggered. You can search for and display a specific transaction as well
as view a bar graph of the detailed steps of that specific transaction.</p>
<p>You can start any Management Central monitor, and then turn to other tasks
on your server, in iSeries Navigator, or on your PC. You can choose
to be informed by an audible or visible alarm on your PC when important thresholds
are reached. The monitor will continue to run and perform any threshold commands
or actions you specified. Your monitor will run until you decide to stop it.
You can view all your monitors, as well as all your Management Central tasks,
remotely with iSeries Navigator
for Wireless.</p>
<p> In the Management Central properties, you can specify whether you want
the central system to automatically attempt to restart your monitors on endpoint
systems where they failed to start. If you select to have the system automatically
attempt to restart your monitors, you may also specify how long you want the
central system to keep trying to restart the monitors and how often you want
the system to try during that time period. For example, if you want the system
to try to restart monitors every five minutes for a period of 3 hours, you
would select <span class="uicontrol">Automatically restart monitors on failed systems,</span> and
then specify 180 minutes for <span class="uicontrol">How long to attempt restart</span> and
5 minutes for <span class="uicontrol">How often to attempt restart.</span></p>
<p>The steps to create and run a monitor are basically the same for whichever
type of monitor you choose to run. </p>
<p>Printable PDF of the section, <a href="rzaih.pdf" target="_blank"><strong>Work
with montiors</strong></a> (about 194 KB)</p>
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