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<link rel="up" href="utilities.html" title="Appendix A. Berkeley DB Command Line Utilities" />
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<p>Library Version 11.2.5.3</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">db_stat</th>
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</tr>
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<tr>
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<td width="20%" align="left"><a accesskey="p" href="dbsql.html">Prev</a> </td>
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<th width="60%" align="center">Appendix A.
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Berkeley DB Command Line Utilities
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</th>
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<td width="20%" align="right"> <a accesskey="n" href="db_tuner.html">Next</a></td>
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</tr>
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</table>
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<hr />
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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="db_stat"></a>db_stat</h2>
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</div>
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</div>
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</div>
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<pre class="programlisting">db_stat -d file [-fN] [-h home] [-P password] [-s database]
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db_stat [-cEelmNrtVxZ] [-C Aclop] [-h home] [-L A] [-M Ah] [-R A]
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[-P password] </pre>
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<p>
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The <span class="command"><strong>db_stat</strong></span> utility displays statistics for Berkeley DB environments.
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</p>
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<p>
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The options are as follows:
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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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<p>
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<span class="bold"><strong>-C</strong></span>
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</p>
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<p>
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Display detailed information about the locking subsystem.
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</p>
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<div class="itemizedlist">
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<ul type="circle">
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<li>
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<p>
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<span class="bold"><strong>A</strong></span>
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</p>
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<p>
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Display all information.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>c</strong></span>
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</p>
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<p>
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Display lock conflict matrix.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>l</strong></span>
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</p>
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<p>
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Display lockers within hash chains.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>o</strong></span>
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</p>
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<p>
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Display lock objects within hash chains.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>p</strong></span>
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</p>
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<p>
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Display locking subsystem parameters.
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</p>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-c</strong></span>
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</p>
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<p>
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Display locking subsystem statistics, as described in the
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<a class="xref" href="lockstat.html" title="DB_ENV->lock_stat()">DB_ENV->lock_stat()</a> method.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-d</strong></span>
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</p>
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<p>
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Display database statistics for the specified file, as described in the
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<a class="xref" href="dbstat.html" title="DB->stat()">DB->stat()</a> method.
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</p>
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<p>
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If the database contains multiple databases and the <span class="bold"><strong>-s</strong></span> flag is not specified, the statistics are
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for the internal database that describes the other databases the file
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contains, and not for the file as a whole.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-E</strong></span>
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</p>
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<p>
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Display detailed information about the database environment.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-e</strong></span>
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</p>
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<p>
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Display information about the database environment, including all
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configured subsystems of the database environment.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-f</strong></span>
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</p>
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<p>
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Display only those database statistics that can be acquired without
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traversing the database.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-h</strong></span>
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</p>
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<p>
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Specify a home directory for the database environment; by default, the
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current working directory is used.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-l</strong></span>
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</p>
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<p>
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Display logging subsystem statistics, as described in the
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<a class="xref" href="logstat.html" title="DB_ENV->log_stat()">DB_ENV->log_stat()</a>
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method.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-L</strong></span>
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</p>
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<p>
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Display all logging subsystem statistics.
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</p>
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<div class="itemizedlist">
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<ul type="circle">
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<li>
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<p>
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<span class="bold"><strong>A</strong></span>
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</p>
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<p>
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Display all information.
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</p>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-M</strong></span>
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</p>
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<p>
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Display detailed information about the cache.
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</p>
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<div class="itemizedlist">
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<ul type="circle">
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<li>
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<p>
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<span class="bold"><strong>A</strong></span>
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</p>
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<p>
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Display all information.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>h</strong></span>
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</p>
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<p>
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Display buffers within hash chains.
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</p>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-m</strong></span>
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</p>
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<p>
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Display cache statistics, as described in the
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<a class="xref" href="mempstat.html" title="DB_ENV->memp_stat()">DB_ENV->memp_stat()</a>
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method.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-N</strong></span>
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</p>
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<p>
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Do not acquire shared region mutexes while running. Other problems,
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such as potentially fatal errors in Berkeley DB, will be ignored as
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well. This option is intended only for debugging errors, and should
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not be used under any other circumstances.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-P</strong></span>
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</p>
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<p>
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Specify an environment password. Although Berkeley DB utilities
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overwrite password strings as soon as possible, be aware there may be
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a window of vulnerability on systems where unprivileged users can see
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command-line arguments or where utilities are not able to overwrite
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the memory containing the command-line arguments.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-R</strong></span>
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</p>
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<p>
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Display detailed information about the replication subsystem.
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</p>
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<div class="itemizedlist">
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<ul type="circle">
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<li>
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<p>
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<span class="bold"><strong>A</strong></span>
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</p>
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<p>
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Display all information.
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</p>
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</li>
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</ul>
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</div>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-r</strong></span>
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</p>
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<p>
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Display replication statistics, as described in
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in the <a class="xref" href="repstat.html" title="DB_ENV->rep_stat()">DB_ENV->rep_stat()</a>
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method.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-s</strong></span>
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</p>
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<p>
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Display statistics for the specified database contained in the file
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specified with the <span class="bold"><strong>-d</strong></span> flag.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-t</strong></span>
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</p>
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<p>
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Display transaction subsystem statistics, as described in the
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<a class="xref" href="txnstat.html" title="DB_ENV->txn_stat()">DB_ENV->txn_stat()</a>
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method.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-V</strong></span>
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</p>
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<p>
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Write the library version number to the standard output, and exit.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-x</strong></span>
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</p>
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<p>
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Display mutex subsystem statistics, as described in the
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<a class="xref" href="mutexstat.html" title="DB_ENV->mutex_stat()">DB_ENV->mutex_stat()</a>
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method.
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</p>
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</li>
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<li>
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<p>
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<span class="bold"><strong>-Z</strong></span>
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</p>
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<p>
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Reset the statistics after reporting them; valid only with the
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<span class="bold"><strong>-C</strong></span>, <span class="bold"><strong>-c</strong></span>, <span class="bold"><strong>-E</strong></span>,
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<span class="bold"><strong>-e</strong></span>, <span class="bold"><strong>-L</strong></span>, <span class="bold"><strong>-l</strong></span>,
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<span class="bold"><strong>-M</strong></span>, <span class="bold"><strong>-m</strong></span>, <span class="bold"><strong>-R</strong></span>,
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<span class="bold"><strong>-r</strong></span>, and <span class="bold"><strong>-t</strong></span> options.
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</p>
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</li>
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</ul>
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</div>
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<p>
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Values normally displayed in quantities of bytes are displayed as a
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combination of gigabytes (GB), megabytes (MB), kilobytes (KB), and
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bytes (B). Otherwise, values smaller than 10 million are displayed
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without any special notation, and values larger than 10 million are
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displayed as a number followed by "M".
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</p>
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<p>
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The <span class="command"><strong>db_stat</strong></span> utility may be used with a Berkeley DB environment (as
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described for the <span class="bold"><strong>-h</strong></span> option, the
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environment variable <span class="bold"><strong>DB_HOME</strong></span>, or
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because the utility was run in a directory containing a Berkeley DB
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environment). In order to avoid environment corruption when using a
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Berkeley DB environment, <span class="command"><strong>db_stat</strong></span> should always be given the chance to
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detach from the environment and exit gracefully. To cause <span class="command"><strong>db_stat</strong></span> to
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release all environment resources and exit cleanly, send it an
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interrupt signal (SIGINT).
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</p>
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<p>
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The <span class="command"><strong>db_stat</strong></span> utility exits 0 on success, and >0 if an error occurs.
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</p>
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<p>For information on the statistics feature for Berkeley DB SQL interface, see <a class="xref" href="dbsql.html#dbsql_command_feature" title="Command Line Features Unique to dbsql">Command Line Features Unique to dbsql</a>.</p>
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<div class="sect2" 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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<h3 class="title"><a id="idp63396648"></a>Environment Variables</h3>
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</div>
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</div>
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</div>
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<div class="sect3" 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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<h4 class="title"><a id="idp63389192"></a>DB_HOME</h4>
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</div>
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</div>
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</div>
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<p>
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If the <span class="bold"><strong>-h</strong></span> option is not specified and
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the environment variable DB_HOME is set, it is used as the path of the
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database home, as described in the
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<a class="xref" href="envopen.html" title="DB_ENV->open()">DB_ENV->open()</a>
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method.
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</p>
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||
</div>
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</div>
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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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<td width="40%" align="left"><a accesskey="p" href="dbsql.html">Prev</a> </td>
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<td width="20%" align="center">
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<a accesskey="u" href="utilities.html">Up</a>
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</td>
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<td width="40%" align="right"> <a accesskey="n" href="db_tuner.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">dbsql </td>
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