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<h2 class="title" style="clear: both"><a id="db_tuner"></a>db_tuner</h2>
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<pre class="programlisting">db_tuner [-c cachesize] -d file [-h home] [-s database] [-v] </pre>
<p>
The <span class="command"><strong>db_tuner</strong></span> utility analyzes the data in a btree database, and suggests a page size that is likely to deliver optimal operation.
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<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
<p>
The <span class="command"><strong>db_tuner</strong></span> utility assumes that databases are compacted when analysing the data. The analysis is based on a static view of the data and the data access and update patterns are not take into account.
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The options are as follows:
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<p>
<span class="bold"><strong>-c</strong></span>
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<p>
Specify a value of the cachesize, otherwise, the default value will
be set.
</p>
</li>
<li>
<p>
<span class="bold"><strong>-d</strong></span>
</p>
<p>
Display database statistics for the specified file. If the database contains multiple databases and the -s flag is not specified, the statistics are for the internal database that describes the other databases the file contains, and not for the file as a whole.
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<span class="bold"><strong>-h</strong></span>
</p>
<p>
Specify a home directory for the database environment.
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</li>
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<span class="bold"><strong>-s</strong></span>
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<p>
Display page size recommendation for the specified database contained in the file specified with the -d flag.
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<span class="bold"><strong>-v</strong></span>
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Display verbose information.
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