173 lines
5.1 KiB
HTML
173 lines
5.1 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>Change Journal Recovery Count (QJOCHRVC) API</title>
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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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<a name="Top_Of_Page"></a>
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<!-- Java sync-link -->
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<h2>Change Journal Recovery Count (QJOCHRVC) API</h2>
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<div class="box" style="width: 60%;">
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<br>
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Required Parameter Group:<br>
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<!-- iddvc RMBR -->
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<br>
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<table width="100%">
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<tr>
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<td align="center" valign="top" width="10%">1</td>
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<td align="left" valign="top" width="50%">Recovery count</td>
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<td align="left" valign="top" width="20%">Input</td>
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<td align="left" valign="top" width="20%">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="top">2</td>
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<td align="left" valign="top">Error Code</td>
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<td align="left" valign="top">I/O</td>
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<td align="left" valign="top">Char(*)</td>
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</tr>
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</table>
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<br>
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Default Public Authority: *EXCLUDE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The journal recovery count allows a user to choose between faster
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abnormal IPL recovery and decreased run time processing. The value
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specified influences the frequency with which journaled objects are forced
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to auxiliary storage as those objects are changed. The specified journal
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recovery count indicates the approximate number of journaled changes that
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would need to be recovered during journal synchronization for this journal
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in the event of an abnormal IPL. Specifying a smaller value decreases the
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number of changes that would need to be recovered from this journal during
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an abnormal IPL by increasing the frequency with which changed objects are
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forced. Specifying a larger value increases the number of changes that
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would need to be recovered for this journal during an abnormal IPL by
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decreasing the frequency with which changed objects are forced. Changing
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this value may affect overall system performance as it affects the
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utilization of auxiliary storage devices.</p>
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<p>The operating system is shipped with a system default journal recovery
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count of 250,000. This API changes the system default journal recovery
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count for all newly created journals on the system and all existing
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journals that have the system default (*SYSDFT) specified for their journal
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recovery count. To set the journal recovery count of a specific journal to
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a value other than the system default, please refer to the Journal recovery
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count (JRNRCYCNT) parameter on the Change Journal (CHGJRN) command.</p>
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<p>This API changes the recovery count for all journals on the system. The
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default value for journal recovery count is 50,000.</p>
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<br>
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<h3>Restrictions</h3>
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<p>None
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</p>
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<br>
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<h3>Authorities and Locks</h3>
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<p>*ALLOBJ special authority is required to use this API.
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</p>
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<br>
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<h3>Required Parameter Group</h3>
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<dl>
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<dt><strong>Recovery count</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>The new value for the journal recovery count. This must be between 10,000
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and 2,000,000,000.</p>
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</dd>
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<dt><strong>Error code</strong></dt>
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<dd>I/O; CHAR(*)
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<p>The structure in which to return error information. For the format of the
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structure, see <a href="../apiref/error.htm#hdrerrcod">Error Code Parameter</a>.</p>
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</dd>
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</dl>
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<br>
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<h3>Error Messages</h3>
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<table width="100%" cellpadding="3">
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<!-- cols="15 85" -->
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<tr>
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<th align="left" valign="top">Message ID</th>
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<th align="left" valign="top">Error Message Text</th>
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</tr>
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<tr>
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<td valign="top">CPF24B4 E</td>
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<td valign="top">Severe error while addressing parameter list.</td>
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</tr>
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<tr>
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<td valign="top">CPF3CF1 E</td>
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<td valign="top">Error code parameter not valid.</td>
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</tr>
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<tr>
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<td valign="top">CPF69A5 E</td>
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<td valign="top">Recovery count must be between &2 and &3.</td>
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</tr>
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<tr>
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<td valign="top">CPF69A6 E</td>
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<td valign="top">Unable to change journal recovery count.</td>
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</tr>
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<tr>
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<td valign="top">CPF9872 E</td>
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<td valign="top">Program or service program &1 in library &2 ended.
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Reason code &3.</td>
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</tr>
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<tr>
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<td valign="top">CPFB802 E</td>
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<td valign="top">The caller of the API must have *ALLOBJ special
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authority.</td>
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</tr>
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</table>
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<br>
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<br>
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<hr>
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API introduced: V5R3
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<hr>
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<table cellpadding="2" cellspacing="2" align="center">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"jc1.htm">Journal and Commit APIs</a> | <a href="aplist.htm">APIs by
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category</a></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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