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5.1 KiB
HTML
<!--$Id: db_stat.so,v 10.27 2000/04/03 20:10:39 bostic Exp $-->
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<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
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<!--All rights reserved.-->
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<html>
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<head>
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<title>Berkeley DB: db_stat</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
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</head>
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<body bgcolor=white>
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<a name="2"><!--meow--></a>
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<table><tr valign=top>
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<td>
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<h1>db_stat</h1>
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</td>
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<td width="1%">
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<a href="../api_c/c_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<hr size=1 noshade>
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<tt>
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<h3><pre>db_stat [<b>-celmNtV</b>]
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[<b>-C Acfhlmo</b>] [<b>-d file [<b>-s database</b>]</b>] [<b>-h home</b>] [<b>-M Ahlm</b>]</pre></h3>
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<h1>Description</h1>
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<a name="3"><!--meow--></a>
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<p>The db_stat utility displays statistics for Berkeley DB environments.
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<p>The options are as follows:
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<p><dl compact>
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<p><dt><b>-C</b><dd>Display internal information about the lock region. (The output from this
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option is often both voluminous and meaningless, and is intended only for
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debugging.)
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<p><dl compact>
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<p><dt>A<dd>Display all information.
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<dt>c<dd>Display lock conflict matrix.
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<dt>f<dd>Display lock and object free lists.
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<dt>l<dd>Display lockers within hash chains.
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<dt>m<dd>Display region memory information.
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<dt>o<dd>Display objects within hash chains.
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</dl>
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<p><dt><b>-c</b><dd>Display lock region statistics as described in <a href="../api_c/lock_stat.html">lock_stat</a>.
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<p><dt><b>-d</b><dd>Display database statistics for the specified file, as described in
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<a href="../api_c/db_stat.html">DB->stat</a>.
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<p>If the database contains multiple databases and the <b>-s</b> flag is
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not specified, the statistics are for the internal database that describes
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the other databases the file contains, and not for the file as a whole.
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<p><dt><b>-e</b><dd>Display current environment statistics.
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<p><dt><b>-h</b><dd>Specify a home directory for the database environment; by
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default, the current working directory is used.
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<p><dt><b>-l</b><dd>Display log region statistics as described in <a href="../api_c/log_stat.html">log_stat</a>.
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<p><dt><b>-M</b><dd>Display internal information about the shared memory buffer pool. (The
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output from this option is often both voluminous and meaningless, and is
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intended only for debugging.)
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<p><dl compact>
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<p><dt>A<dd>Display all information.
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<dt>h<dd>Display buffers within hash chains.
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<dt>l<dd>Display buffers within LRU chains.
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<dt>m<dd>Display region memory information.
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</dl>
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<p><dt><b>-m</b><dd>Display shared memory buffer pool statistics as described in
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<a href="../api_c/memp_stat.html">memp_stat</a>.
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<p><dt><b>-N</b><dd>Do not acquire shared region locks while running. Other problems such as
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potentially fatal errors in Berkeley DB will be ignored as well. This option
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is intended only for debugging errors and should not be used under any
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other circumstances.
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<p><dt><b>-s</b><dd>Display statistics for the specified database contained in the file
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specified with the <b>-d</b> flag.
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<p><dt><b>-t</b><dd>Display transaction region statistics as described in <a href="../api_c/txn_stat.html">txn_stat</a>.
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<p><dt><b>-V</b><dd>Write the version number to the standard output and exit.
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</dl>
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<p>Only one set of statistics is displayed for each run, and the last option
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specifying a set of statistics takes precedence.
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<p>Values smaller than 10 million are generally displayed without any special
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notation. Values larger than 10 million are normally displayed as
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<b><number>M</b>.
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<p>The db_stat utility may be used with a Berkeley DB environment (as described for the
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<b>-h</b> option, the environment variable <b>DB_HOME</b>, 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 Berkeley DB
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environment, db_stat should always be given the chance to detach from
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the environment and exit gracefully. To cause db_stat to release all
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environment resources and exit cleanly, send it an interrupt signal
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(SIGINT).
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<p>The db_stat utility exits 0 on success, and >0 if an error occurs.
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<h1>Environment Variables</h1>
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<p><dl compact>
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<p><dt>DB_HOME<dd>If the <b>-h</b> option is not specified and the environment variable
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DB_HOME is set, it is used as the path of the database home, as described
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in <a href="../api_c/env_open.html">DBENV->open</a>.
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</dl>
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<h1>See Also</h1>
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<a href="../utility/berkeley_db_svc.html">berkeley_db_svc</a>,
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<a href="../utility/db_archive.html">db_archive</a>,
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<a href="../utility/db_checkpoint.html">db_checkpoint</a>,
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<a href="../utility/db_deadlock.html">db_deadlock</a>,
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<a href="../utility/db_dump.html">db_dump</a>,
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<a href="../utility/db_load.html">db_load</a>,
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<a href="../utility/db_recover.html">db_recover</a>,
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db_stat,
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<a href="../utility/db_upgrade.html">db_upgrade</a>,
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and
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<a href="../utility/db_verify.html">db_verify</a>.
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</tt>
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<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
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</body>
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</html>
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