106 lines
4.4 KiB
HTML
106 lines
4.4 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD><META http-equiv="Content-Type" content="text/html; charset=utf-8">
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<TITLE>Restricted State</TITLE>
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<meta name="Copyright" content="Copyright (c) 2004 by IBM Corporation">
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<LINK rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</HEAD>
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<BODY>
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<img height="38" src="mastertitlesmall.gif" width="291" alt="Experience Report">
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<A
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NAME="Top_Of_Page"></A>
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<table width="100%">
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<TR>
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<TD>
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<H2>Restricted State</H2>
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<P>At times you may need to perform work on your iSeries<SUP>(TM)</SUP> server without interference from other users. Performing that work while
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the system is in the restricted state allows you to do just that.</P>
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<P>Restricted state is a condition where all the subsystems on the iSeries
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server have ended and only a single user job remains active in the controlling
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subsystem. The controlling subsystem is the subsystem that starts automatically
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when the system starts and is specified by the
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<a href="../rzakz/rzakzqctlsbsd.htm">
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Controlling Subsystem (QCTLSBSD)</a>
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system value. IBM<sup>(R)</sup> ships two subsystem descriptions that can be used as
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the controlling subsystem: QBASE and QCTL. The iSeries Information Center
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contains additional information on the
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<a href="../rzaks/rzakssbsshipped.htm">
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subsystems shipped with the system.</a></P>
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<P>Some system commands require that the system is in the restricted state
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in order to run; for example,
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<a href="../cl/savsys.htm">
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Save System (SAVSYS) </a> and
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<a href="../cl/rclstg.htm">
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Reclaim Storage (RCLSTG) </a>
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for the system and basic user auxiliary storage pools (ASPs).
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Restricted
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state ensures that other functions are not interfering with the system's
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access to objects and that the objects are not changing while the system
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commands are running.</P>
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<P>In addition, you may want to take the system to the restricted state before
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powering down. This ensures that all user work has ended before the system
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loses power. If a problem occurs while the user jobs are ending, the system
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operator can provide assistance from the active job that remains. This
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cannot be done when the
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<a href="../cl/pwrdwnsys.htm">
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Power Down System (PWRDWNSYS) </a>command is called first
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because the command issuer's job is ended along with all the other user
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jobs.</P>
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<P>Since all the other jobs that run in subsystems are ended when the system
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goes into the restricted state, functions that run in these jobs are not
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available during this time. For example, the TCP/IP servers that run in
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the QSYSWRK subsystem are not available while the system is in the restricted
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state. System jobs remain active while the system is in the restricted
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state to handle critical system functions. However, not all functions provided
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by system jobs are available. For example, the QJOBSCD system job will
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not submit jobs for job schedule entries while the system is in the restricted
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state.</P>
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<P>The following sections contain additional information about the restricted
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state:</P>
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<BLOCKQUOTE>
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<P><STRONG>Start restricted state</STRONG>
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<BR>
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Describes how to put the system in the restricted state.</P>
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<P><STRONG>Restricted state status</STRONG>
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<BR>
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Provides information on how to determine when the system has reached the
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restricted state.</P>
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<P><STRONG>End restricted state</STRONG>
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<BR>
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Describes the proper method for bringing the system out of the restricted
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state.</P>
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</BLOCKQUOTE>
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</TD>
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<td><img src="icblank.gif" alt="">
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</td>
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<td VALIGN=top nowrap="">
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<FONT SIZE=2>
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<b>View this report</b><br>
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<img src="filetype.gif" alt=""><a href="wmrstate53.pdf" target="_">PDF version</a> (184 KB)<br>(Web only)</font>
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<P><FONT SIZE=2><b>Author</b><br>
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Dave Novey<br>
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</font></P>
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<P><FONT SIZE=2><b>Published date</b><br>
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May 2004</font></P>
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</td>
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</TR>
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</table>
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</BODY>
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</HTML>
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