179 lines
5.0 KiB
HTML
179 lines
5.0 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>
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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>Close Database File Exit Program</title>
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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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<!-- Begin Header Records --><!-- Created for V5R1 -->
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<!-- File Edited March 2001 -->
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<!-- This file has undergone html cleanup on 1/8/02 by JET -->
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<!-- End Header Records -->
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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">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>Close Database File Exit Program</h2>
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<div class="box" style="width: 70%;">
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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%">Database close exit information</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%">Char(*)</td>
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</tr>
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</table>
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<br>
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Exit Point Name: QIBM_QDB_CLOSE<br>
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<!-- iddvc RMBR -->
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<br>
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Exit Point Format Name: DBCL0100<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The Close Database File exit program is called when a job is trying to lock a
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file that is currently held by another job due to existence of pseudo closed
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cursors. If the file is no longer being used, locks are being held over the
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file to improve the performance of the next SQL open in the job.
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The locks can be freed to allow the requesting job to use the file.</p>
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<p>After a pseudo closed SQL cursor is fully closed, if an exit program is
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registered to this exit point, database will call the registered exit program
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in the job that had held the lock. The intent is that the job that had
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previously held the lock can now free up any additional resources it may
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have been holding related to the SQL cursor.</p>
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<p>For information about adding an exit program to an exit point, see the <a
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href="reg1.htm">Registration Facility APIs</a>.</p>
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<p><strong>Note:</strong> The Close database file exit point ignores any return
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codes or error messages that are sent from the exit program.</p>
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<br>
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<h3>Authorities and Locks</h3>
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<dl>
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<dt><em>User Profile Authority</em></dt>
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<dd>*ALLOBJ and *SECADM to add or remove exit programs to the registration
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facility</dd>
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</dl>
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<br>
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<h3>Required Parameter</h3>
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<dl>
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<dt><strong>Database close information</strong></dt>
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<dd>Input; CHAR(*)
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<p>Information needed by the exit program for the database file to close.</p>
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</dd>
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</dl>
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<br>
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<h3>Format of Database Close Exit Information</h3>
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<p>The following table shows the structure of the close database exit
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information for format DBCL0100. For a description of the fields in this
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format, see the Field Descriptions immediately following the table.</p>
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<table border width="80%">
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<tr>
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<th align="center" valign="bottom" colspan="2">Offset</th>
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<th align="left" valign="bottom" rowspan="2">Type</th>
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<th align="left" valign="bottom" rowspan="2">Field</th>
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</tr>
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<tr>
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<th align="center" valign="bottom">Dec</th>
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<th align="center" valign="bottom">Hex</th>
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</tr>
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<tr>
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<td align="center" valign="top" width="10%">0</td>
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<td align="center" valign="top" width="10%">0</td>
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<td align="left" valign="top" width="20%">CHAR(10)</td>
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<td align="left" valign="top" width="60%">Database file name</td>
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</tr>
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<tr>
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<td align="center" valign="top">10</td>
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<td align="center" valign="top">0A</td>
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<td align="left" valign="top">CHAR(10)</td>
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<td align="left" valign="top">Database file library name</td>
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</tr>
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<tr>
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<td align="center" valign="top">20</td>
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<td align="center" valign="top">14</td>
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<td align="left" valign="top">CHAR(10)</td>
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<td align="left" valign="top">Database file member name</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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<h3>Field Descriptions</h3>
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<p><strong>Database file name.</strong> The database file name that another
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process is attempting to lock. This is always the 10-character system name.</p>
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<p><strong>Database file library name.</strong> The name of the library
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containing the database file.</p>
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<p><strong>Database file member name.</strong> The specific member that another
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process is attempting to lock. If the member name is *NONE, a file lock is
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being requested.</p>
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<h3>Usage Notes</h3>
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<h4>Registration considerations.</h4>
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<p>Any exit program registered for this exit point must be threadsafe if it
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will be called in a job that has multiple threads.</p>
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<hr>
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Exit program introduced: V5R1
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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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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"file1.htm">Database and File 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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</center>
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<br>
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</body>
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</html>
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