159 lines
9.5 KiB
HTML
159 lines
9.5 KiB
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Timeout interval for disconnected jobs" />
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<meta name="abstract" content="Timeout interval for disconnected jobs system value specifies how long a disconnected job can be inactive before the job is ended and the action to take when a job reaches timeout." />
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<title>Timeout interval for disconnected jobs</title>
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<body id="qdscjobitv"><a name="qdscjobitv"><!-- --></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">Timeout interval for disconnected jobs</h1>
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<div><p>Timeout interval for disconnected jobs system value specifies how
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long a disconnected job can be inactive before the job is ended and the action
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to take when a job reaches timeout.</p>
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<p>If you set the timeout interval action for inactive jobs to disconnect
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inactive jobs, you should set the timeout for disconnected jobs to end the
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jobs eventually.</p>
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<p>A disconnected job uses up system resources, as well as retaining any locks
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on objects. To prevent two users from trying to change the same information
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at the same time, the system locks a record before updating it. Any locks
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on resources remain in effect when a the system disconnects a user’s job.
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Depending on your application design and the number of users on the system,
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locks may cause performance problems on your system. Check with your programmer
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or application provider to determine if locking may impact your performance. </p>
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<p>See <a href="#qdscjobitv__quickref">Quick reference</a> table
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for an overview of the timeout interval for disconnected jobs system value. </p>
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<div class="p">
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. Possible values for the timeout interval for
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disconnected jobs system value</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e31">iSeries™ Navigator </th>
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<th valign="bottom" id="d0e35">Character-based interface</th>
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<th valign="bottom" id="d0e37">Description</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e31 ">Timeout interval (5-1,440) minutes</td>
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<td valign="top" headers="d0e35 "><em>time-in-minutes</em></td>
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<td valign="top" headers="d0e37 ">Specify a value between 5 and 1,440 minutes. </td>
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</tr>
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<tr><td valign="top" headers="d0e31 ">Do not timeout</td>
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<td valign="top" headers="d0e35 ">*NONE</td>
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<td valign="top" headers="d0e37 ">The system does not automatically end a disconnected
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job. To retain system performance and unlock objects, you may need to manually
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end jobs.</td>
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</tr>
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<tr><td valign="top" headers="d0e31 ">No selections</td>
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<td valign="top" headers="d0e35 ">240</td>
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<td valign="top" headers="d0e37 ">If you do not select either option, the system will
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use the default value of 240 minutes to end a disconnected job.</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<p><strong>Relationship to security policy</strong></p>
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<p>Within your security policy you should inform users your company's expectations
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for managing their signon activities. Inactive jobs pose a potential risk
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to system resources because someone could gain access to your system through
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an inactive terminal. However, normal job duties often interrupt users at
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their workstations, so you need to provide some flexibility for these expected
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interruptions. Using the interactive job system values provide a means to
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maintain security of system resource and provide user's flexibility to perform
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all their job responsibilities. Your security policy should state expectations
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for users regarding signon activities to both their workstations and to system
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to which they have access. For example, users are expected to password protected
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their workstations and enable password protection every time they leave their
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workstation. If they need to leave their workstation while performing a job
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on the system, locking their workstation provides a first barrier to anyone
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who tries to gain access to your system through that workstation. However,
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password protection is only the first line of defense. Use the interactive
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job system values to ensure that malicious users do not gain access to system
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resources. </p>
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<p>If a job exceeds the timeout interval for inactive jobs, the
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system will take the specified timeout interval action. If this action is
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to disconnect the job, the system will wait until the timeout interval has
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elapsed before disconnecting the job. If a job also exceeds the timeout interval
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for disconnected jobs, the system will end the job. Assume you have set the
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inactive job timeout interval to 30 minutes and the disconnected job timeout
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interval to 300 minutes or 5 hours. If a user forgets to signoff at 9:30 a.m.,
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the system disconnects her job at 10:00 a.m. and will end the job at 3:00
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p.m.</p>
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<p>When the system ends the disconnected job, any data on the user's display
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that has not yet been entered into the system will be lost. If the user signs
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on to the same workstation before the disconnected job timeout elapses, then
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the job resumes from the point where the system disconnected the job.</p>
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<div class="p">
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<div class="tablenoborder"><a name="qdscjobitv__quickref"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="qdscjobitv__quickref" frame="border" border="1" rules="all"><caption>Table 2. Quick Reference. Provides details
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for the timeout interval for disconnected jobs system value.</caption><thead align="left"><tr valign="bottom"><th valign="bottom" id="d0e82">iSeries Navigator name</th>
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<th valign="bottom" id="d0e86">Disconnected jobs</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e82 ">Character-based interface name</td>
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<td valign="top" headers="d0e86 ">QDSCJOBITV</td>
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</tr>
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<tr><td valign="top" headers="d0e82 ">Authority</td>
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<td valign="top" headers="d0e86 ">None</td>
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</tr>
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<tr><td valign="top" headers="d0e82 ">How to access</td>
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<td valign="top" headers="d0e86 "><div class="p"><strong>iSeries Navigator</strong><ol><li>Expand <span class="menucascade"><span class="uicontrol">Configuration and Service</span> > <span class="uicontrol">System
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Values</span></span>.</li>
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<li>Right click <strong>Jobs</strong> and select <strong>Properties</strong>.</li>
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<li>On the <strong>Interactive Jobs</strong> page, you will find the option for timeout
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interval for disconnected jobs.</li>
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</ol>
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</div>
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<div class="p"><strong>Character-based interface</strong><ol><li>In the character-based interface, type <samp class="codeph">WRKSYSVAL QDSCJOBITV</samp>.</li>
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</ol>
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</div>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e82 ">Changes take effect</td>
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<td valign="top" headers="d0e86 ">Immediately</td>
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</tr>
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<tr><td valign="top" headers="d0e82 ">Default value</td>
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<td valign="top" headers="d0e86 ">240</td>
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</tr>
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<tr><td valign="top" headers="d0e82 ">Recommended value</td>
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<td valign="top" headers="d0e86 ">300</td>
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</tr>
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<tr><td valign="top" headers="d0e82 "><a href="rzamvlockdown.htm">Lockable</a></td>
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<td valign="top" headers="d0e86 ">Yes</td>
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</tr>
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<tr><td valign="top" headers="d0e82 ">Special considerations </td>
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<td valign="top" headers="d0e86 ">This system value is used with the <a href="rzamvqinactitv.htm">timeout interval</a> for
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inactive jobs and the <a href="rzamvqinatmsgq.htm">timeout interval action</a> system values. Together these
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system values ensure that inactive and disconnected jobs are ended properly. </td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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<p>For more in-depth information about this security value, see Chapter 3, <span class="q">"Security
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System Values"</span> in <a href="../books/sc415302.pdf" target="_blank">Security
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Reference</a>. </p>
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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="rzamvplansyslvlsec.htm" title="System security entails controlling user access and their privileges, maintaining information integrity, monitoring processes and access, auditing system functions, and providing backup and recovery of security related information.">Plan system security</a></div>
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</div>
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</div>
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</body>
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