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6.5 KiB
HTML
100 lines
6.5 KiB
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<meta name="DC.Title" content="Save and restore limits" />
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<meta name="abstract" content="This topic contains the values for the system limits that are related to save and restore, such as limits for the size of a save file and the size of an object that can be saved." />
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<title>Save and restore limits</title>
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<body id="rzampsaverst"><a name="rzampsaverst"><!-- --></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 and restore limits</h1>
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<div><p>This topic contains the values for the system limits that are related
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to save and restore, such as limits for the size of a save file and the size
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of an object that can be saved. </p>
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<div class="section"><div class="p">
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<div class="tablenoborder"><a name="rzampsaverst__saversttble"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rzampsaverst__saversttble" width="100%" frame="border" border="1" rules="all"><caption>Table 1. Save and restore limits</caption><thead align="left"><tr><th valign="top" width="50%" id="d0e23">Save and restore limits</th>
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<th valign="top" width="50%" id="d0e25">Value</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" width="50%" headers="d0e23 ">Maximum number of related objects that can be saved in a single save
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operation<sup>1</sup></td>
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<td valign="top" width="50%" headers="d0e25 ">Approximately 111 000</td>
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</tr>
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<tr><td valign="top" width="50%" headers="d0e23 "><img src="./delta.gif" alt="Start of change" />Maximum number of related objects that can be restored
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in a single restore operation <sup>1</sup><img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="50%" headers="d0e25 "><img src="./delta.gif" alt="Start of change" />Approximately 104 000<img src="./deltaend.gif" alt="End of change" /></td>
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</tr>
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<tr><td valign="top" width="50%" headers="d0e23 ">Maximum number of names in a save or restore command specifying which
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objects or libraries to include or exclude in the save or restore operation<sup>2</sup></td>
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<td valign="top" width="50%" headers="d0e25 ">300</td>
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</tr>
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<tr><td valign="top" width="50%" headers="d0e23 ">Maximum number of concurrent save or restore operations</td>
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<td valign="top" width="50%" headers="d0e25 ">Limited only by available machine resources</td>
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</tr>
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<tr><td valign="top" width="50%" headers="d0e23 "><img src="./delta.gif" alt="Start of change" />Maximum size of an object that can be saved<img src="./deltaend.gif" alt="End of change" /></td>
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<td valign="top" width="50%" headers="d0e25 "><img src="./delta.gif" alt="Start of change" />Approximately 2 terabytes<img src="./deltaend.gif" alt="End of change" /></td>
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</tr>
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<tr><td valign="top" width="50%" headers="d0e23 ">Maximum size of a save file</td>
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<td valign="top" width="50%" headers="d0e25 ">Approximately 1 terabyte</td>
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</tr>
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<tr><td colspan="2" valign="top" headers="d0e23 d0e25 "><div class="note"><span class="notetitle">Note:</span> </div>
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<ol><li><img src="./delta.gif" alt="Start of change" />All database file objects in a library that are related to
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each other by dependent logical files are considered to be related objects.
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Starting in V5R4, all database files in a library that have referential constraints
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are considered to be related objects when using the save-while-active function. <p></p>
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<div class="p">A
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database file object consists of one or more internal objects. A maximum of
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approximately 500 000 related internal objects can be saved in a single
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save operation. One internal object is saved for each database file object,
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along with the following additional internal objects: <ul><li>If the physical file is not keyed, add 1 internal object per member.</li>
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<li>If the physical file is keyed, add 2 internal objects per member.</li>
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<li>If the physical file has unique or referential constraints, add 1 internal
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object per constraint.</li>
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<li>If the physical file has triggers, add 1 internal object for the file.</li>
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<li>If the physical or logical file has column level authorities, add 1 internal
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object for the file.</li>
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<li>If you use ACCPTH(*YES) on the save command, add 1 internal object for
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each logical file in the save request.</li>
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</ul>
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</div>
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<img src="./deltaend.gif" alt="End of change" /></li>
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<li><img src="./delta.gif" alt="Start of change" />Using generic names to specify groups of objects or libraries
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can help avoid this limit. For the LIB, OMITLIB and OMITOBJ parameters on
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save commands, you can use the Command User Space (CMDUSRSPC) parameter to
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raise the limit to 32 767 simple or generic names.<img src="./deltaend.gif" alt="End of change" /></li>
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</ol>
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</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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</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="rzampoverview.htm" title="If you exceed system limitations you can experience an application outage or a system outage. Avoid these types of outages by being aware of the maximum capacities and system limitations in advance.">Maximum capacities</a></div>
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