mirror of
https://github.com/yasuhirokimura/db18
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Yasuhiro KIMURA
95 lines
4.1 KiB
HTML
95 lines
4.1 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>log_set_config</title>
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<link rel="stylesheet" href="apiReference.css" type="text/css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
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<link rel="start" href="index.html" title="Berkeley DB C API Reference" />
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<link rel="up" href="configuration_reference.html" title="Appendix D. DB_CONFIG Parameter Reference" />
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<link rel="prev" href="slice_parameter.html" title="slice" />
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</head>
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<body>
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<div xmlns="" class="navheader">
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<div class="libver">
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<p>Library Version 18.1.40</p>
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</div>
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<table width="100%" summary="Navigation header">
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<tr>
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<th colspan="3" align="center">log_set_config</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="slice_parameter.html">Prev</a> </td>
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<th width="60%" align="center">Appendix D. DB_CONFIG Parameter Reference</th>
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<td width="20%" align="right"> <a accesskey="n" href="set_mp_max_openfd_parameter.html">Next</a></td>
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</tr>
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</table>
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<hr />
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</div>
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<div class="sect1" lang="en" xml:lang="en">
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<div class="titlepage">
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<div>
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<div>
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<h2 class="title" style="clear: both"><a id="log_set_config_parameter"></a>log_set_config</h2>
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</div>
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</div>
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</div>
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<p>
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Configures the Berkeley DB logging subsystem.
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</p>
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<p>
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The syntax of this parameter in the <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a> file is a
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single line with the string
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<code class="literal">log_set_config</code>, one or more whitespace
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characters, method <span class="bold"><strong>flag</strong></span>
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parameter as a string, optionally one or more whitespace
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characters, and the string <code class="literal">on</code> or
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<code class="literal">off</code>. If the optional string is
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omitted, the default is <code class="literal">on.</code>
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</p>
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<p>
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The method <span class="bold"><strong>flag</strong></span> parameters are:
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</p>
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<div class="itemizedlist">
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<ul type="disc">
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<li>
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DB_LOG_DIRECT
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<p>
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Turns off system buffering of Berkeley DB log files to avoid double caching.
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</p></li>
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<li>
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DB_LOG_DSYNC
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<p>Configures Berkeley DB to flush log writes to the backing disk before returning from the
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write system call, rather than flushing log writes explicitly in a separate system call, as
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necessary.</p></li>
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</ul>
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</div>
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<p>For more information, see <a class="xref" href="envlog_set_config.html" title="DB_ENV->log_set_config()">
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<span>DB_ENV->log_set_config()</span>
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</a>. </p>
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</div>
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<div class="navfooter">
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<hr />
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<table width="100%" summary="Navigation footer">
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<tr>
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<td width="40%" align="left"><a accesskey="p" href="slice_parameter.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="configuration_reference.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="set_mp_max_openfd_parameter.html">Next</a></td>
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</tr>
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<tr>
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<td width="40%" align="left" valign="top">slice </td>
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<td width="20%" align="center">
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<a accesskey="h" href="index.html">Home</a>
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</td>
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<td width="40%" align="right" valign="top"> set_mp_max_openfd</td>
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</tr>
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</table>
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</div>
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</body>
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</html>
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