143 lines
8.3 KiB
HTML
143 lines
8.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Title" content="Save-while-active restrictions" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Save-while-active restrictions</title>
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</head>
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<body id="rzaiu314"><a name="rzaiu314"><!-- --></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">Save-while-active restrictions</h1>
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<div><p>The following restrictions apply to all of the commands which provide the
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save-while-active function. </p>
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<ul><li>The save-while-active function is only available on the commands listed
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in Save-while-active function.</li>
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<li>You cannot use the save-while-active function in the following situations:
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<ul><li>When all subsystems have ended. If you have ended all subsystems, the
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save operation is the only user job that is active. It must finish before
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you can restart your subsystems and applications. The following save operations
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require that you end all subsystems. Therefore, you cannot use the save-while-active
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function with these operations: <ul><li>Saving the system library</li>
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<li>Saving all libraries</li>
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<li>Saving the entire system</li>
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</ul>
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</li>
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<li>When freeing or deleting storage during a save operation. If specifying
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STG(*FREE) or STG(*DELETE) on a save command, or CHKFORMRK(*YES) on the SAVDLO
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command, you cannot use the save-while-active function.</li>
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</ul>
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</li>
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<li>You should not use the save-while-active function when the server is very
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busy or when there is very little disk storage available. Before you save
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large amounts of data (such as all user libraries), you should initially use
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the save-while-active function on a limited amount of data. Using the save-while-active
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feature on a limited amount of data will help you determine its impact on
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your server's performance and storage.</li>
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<li>You should not load, apply, or remove program temporary fixes (PTF)s when
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running a save-while-active operation.</li>
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<li>You must issue separate save commands to use the save-while-active function
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for objects in libraries, document library objects, and objects in directories.
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If you need to synchronize objects you are saving with different commands,
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first end your applications until all of the objects have reached a checkpoint.
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<ul><li>If you have only one media device, each command must finish before the
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next can start. If you use the save-while-active function to reduce your save-outage
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time, save folders and directories first. Save libraries last. Saving the
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objects in this order will probably provide the greatest reduction in the
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save-outage time.</li>
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<li>If you have multiple media devices, and you use the save-while-active
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function to reduce your save-outage time, save libraries, folders, and directories
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concurrently. This will probably provide the greatest reduction in you save-outage
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time.</li>
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</ul>
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</li>
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<li>You cannot save objects that you create after the save operation begins.</li>
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<li>You cannot save objects that other jobs are using during checkpoint processing. </li>
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<li>Do not use System Service Tools (SST) functions for objects you are currently
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saving by a save-while-active operation.</li>
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</ul>
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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="rzaiuswaconsid.htm">Considerations and restrictions for the save-while-active function</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="rzaiurzaiu310.htm">Save-while-active function</a></div>
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<div><a href="rzaiurzaiu334.htm">Performance considerations for save-while-active</a></div>
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<div><a href="rzaiurzaiu343.htm">Storage considerations for save-while-active</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzaiurzaiu319.htm">Save-while-active object locking rules</a></div>
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</div>
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</div><div class="nested1" xml:lang="en-us" id="conceptSunDec051601502004"><a name="conceptSunDec051601502004"><!-- --></a><h2 class="topictitle2">Library restrictions</h2>
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<div><ul><li>Full synchronization is not available when you use save all IBM<sup>®</sup> libraries
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using SAVLIB LIB(*IBM).</li>
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<li>If you have specified *NOCMTBDY for the SAVACTWAIT parameter, you cannot
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save any *IBM library or any library that begins with Q (except for QGPL).</li>
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</ul>
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</div>
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</div>
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<div class="nested1" xml:lang="en-us" id="conceptSunDec051602112004"><a name="conceptSunDec051602112004"><!-- --></a><h2 class="topictitle2">Integrated file system restrictions</h2>
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<div><p>Consider the following when using the save-while-active function with the
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SAV or SAVRST commands with integrated file systems: </p>
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<ul><li>The wait time option is not available.</li>
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<li>When you are saving objects in libraries or document library objects,
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the considerations stated for those objects also apply.</li>
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</ul>
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</div>
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</div>
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<div class="nested1" xml:lang="en-us" id="conceptSunDec051602302004"><a name="conceptSunDec051602302004"><!-- --></a><h2 class="topictitle2">Document library restrictions</h2>
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<div><p>Consider the following considerations when you use the save-while-active
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function to save document library objects. </p>
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<ul><li>Full synchronization is not available. Only system-defined synchronization
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is available.</li>
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<li>Checkpoint notification is not available. This means that you cannot determine
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when it would be safe to restart your applications that use document library
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objects. When saving document library objects, the benefit of the save-while-active
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function is that objects are allocated for a shorter time than with normal
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save operations.</li>
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<li>You may cannot save documents during save-while-active processing if a
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reclaim operation (RCLDLO command) is running.</li>
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<li>Folders may not be saved during save-while-active processing if a reorganize
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operation (RGZDLO command) or a reclaim operation (RCLDLO command) is running.</li>
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<li>Some applications use application programming interfaces (APIs) or shared
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folders to work with a document like a personal computer. When they update
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document data, they save the updates to a temporary file. The application
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does not permanently write changes to the document until the application session
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ends. Therefore these applications can update a document while a save-while-active
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operation is running. <p>Other applications update documents directly as
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the application receives data. For example, some spreadsheet applications
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and image applications work this way. If this type of application updates
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a document while a save-while-active operation is running, the application
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does not save document. The job log receives Diagnostic messages CPF8A80:<span class="uicontrol">Document
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in use</span> and CPF90AC:<span class="uicontrol">Document not saved</span>
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to indicate that the application did not save the object because the object
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was in use.</p>
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</li>
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</ul>
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</div>
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</div>
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</body>
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</html>
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