115 lines
7.3 KiB
HTML
115 lines
7.3 KiB
HTML
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<meta name="DC.Title" content="Scenario: Adjust the system time 3 minutes" />
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<meta name="abstract" content="View this topic to learn how to manually adjust the system time by 3 minutes. A time adjustment is different from changing the time of day system value. A time adjustment is the recommended method for system time changes." />
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<title>Scenario: Adjust the system time 3 minutes</title>
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</head>
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<body id="rzati3minuteadj"><a name="rzati3minuteadj"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Scenario: Adjust the system time 3 minutes</h1>
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<div><p>View this topic to learn how to manually adjust the system time
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by 3 minutes. A time adjustment is different from changing the time of day
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system value. A time adjustment is the recommended method for system time
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changes.</p>
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<div class="section"><h4 class="sectionscenariobar">Situation</h4><p>As an
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administrator of your company's network, you need to maintain the system time
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on your IBM<sup>®</sup> iSeries™ server.
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Your iSeries server
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is set to use the Eastern Standard Time zone, but you notice that the system
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time on your iSeries server
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is off by 3 minutes. Instead of manually setting the system time using the
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time of day system value, you need to make a time adjustment to ensure that
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your jobs run with the proper time. This also ensures that time does not jump
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either forward or backward in one instantaneous change.</p>
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</div>
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<div class="section"><h4 class="sectionscenariobar">Objectives</h4><p>In this
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scenario, MyCompany, Inc. needs to adjust the system time 3 minutes. Jobs
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retrieve their time values from the system time. Therefore, it is critical
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that the system time be accurate so that jobs run with the proper time.</p>
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<p>The
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objectives of this scenario are as follows:</p>
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<ul><li>To adjust system time backward 3 minutes</li>
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<li>To ensure that jobs run with the proper time</li>
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<li>To ensure that time does not jump forward or backward in one instantaneous
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change</li>
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</ul>
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</div>
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<div class="section"><h4 class="sectionscenariobar">Details</h4><p>The system
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time on iSeries A
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is ahead 3 minutes. The system time needs to be slowed down until it is set
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to 3 minutes less than the current time. You cannot manually change the time
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of day system value because that would essentially repeat the last 3 minutes
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of system time. The type of repetition can cause unpredictable errors if time-sensitive
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programs are running.</p>
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</div>
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<div class="section" id="rzati3minuteadj__prereqs"><a name="rzati3minuteadj__prereqs"><!-- --></a><h4 class="sectionscenariobar">Prerequisites
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and assumptions</h4><p>Based on this scenario, your system must meet the
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following requirements to make a time adjustment:</p>
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<ul><li>Your system is using V4R5 or later hardware.</li>
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<li>You are running i5/OS™ V5R3 or later.</li>
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<li>Your are using IBM iSeries Access for Windows<sup>®</sup> V5R3 or later to communicate
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with your system.</li>
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<li>Your system does not retrieve UTC from an external time source.</li>
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</ul>
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<p>In addition, it is recommended that you turn off any time maintenance
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applications that are in use. A manual time adjustment might conflict with
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any adjustments that the time maintenance application might make.</p>
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</div>
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<div class="section" id="rzati3minuteadj__Timeadj"><a name="rzati3minuteadj__Timeadj"><!-- --></a><h4 class="sectionscenariobar">Time-adjustment
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steps</h4><p>Assuming that time adjustments are allowed on your system,
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complete the following steps:</p>
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<ol><li>In iSeries Navigator,
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expand <span class="menucascade"><span class="uicontrol">My Connections</span> > <span class="uicontrol">iSeries
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A</span> > <span class="uicontrol">Configuration and Service</span> > <span class="uicontrol">Time
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Management</span> > <span class="uicontrol">Time Adjustment</span></span>.</li>
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<li>On the <span class="uicontrol">Time Adjustment</span> dialog box, click <span class="uicontrol">Start
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a new time adjustment</span>. If a time adjustment is in progress, the
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current time adjustment will be stopped. Before proceeding, make sure that
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the current adjustment can be stopped.</li>
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<li>Specify <span class="uicontrol">-0:03:00</span> (3 minutes).</li>
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<li>Click <span class="uicontrol">OK</span> to start the time adjustment.</li>
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<li>View the <span class="uicontrol">Time Adjustment</span> fields on the <span class="uicontrol">Time
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Adjustment</span> dialog box. The following fields should be displayed:<ul><li>Adjustment in progress: Yes</li>
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<li>Adjustment remaining: HH:MM:SS (where HH represents the hours, MM represents
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the minutes, and SS represents the seconds)</li>
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<li>Estimated time until completion: HH:MM:SS</li>
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</ul>
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</li>
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</ol>
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<p>A time adjustment is in progress until the system time reaches the
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time value specified. Click <span class="uicontrol">Refresh Now</span> to update the
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statistics displayed.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzatiscenarios.htm" title="View this topic to learn about the different ways you can use time zones and time adjustments in time management. These scenarios describe a particular situation and task to complete.">Scenarios</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="rzatitimeadj.htm" title="Learn how a time maintenance application automatically adjusts system time and how you can manually make time adjustments to the system time. Also, learn how a time adjustment is different from manually setting the time of day system value and why a time adjustment is the preferred method when changing the system time.">Time adjustment</a></div>
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</div>
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</div>
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</body>
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</html> |