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117 строки
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117 строки
5.1 KiB
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<HTML>
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<HEAD>
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<TITLE>db_stat</TITLE>
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</HEAD>
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<BODY BGCOLOR=white>
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<H1>db_stat</H1>
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<HR SIZE=1 NOSHADE>
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<PRE>
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<!-- Manpage converted by man2html 3.0.1 -->
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<B>db</B>_<B>stat</B> [<B>-clmNt</B>]
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[<B>-C</B> <B>Acfhlmo</B>] [<B>-d</B> <B>file</B>] [<B>-h</B> <B>home</B>] [<B>-M</B> <B>Ahlm</B>]
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</PRE>
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<H2>DESCRIPTION</H2><PRE>
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The db_stat utility displays statistics for DB
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environments.
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The options are as follows:
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<B>-C</B> Display internal information about the lock region.
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(The output from this option is often both voluminous
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and meaningless, and is intended only for debugging.)
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<B>-A</B> Display all information.
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<B>-c</B> Display lock conflict matrix.
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<B>-f</B> Display lock and object free lists.
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<B>-l</B> Display lockers within hash chains.
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<B>-m</B> Display region memory information.
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<B>-o</B> Display objects within hash chains.
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<B>-c</B> Display lock region statistics as described in
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<B><A HREF="db_lock.html">db_lock(3)</A></B>.
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<B>-d</B> Display database statistics for the specified
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database, as described in <B><A HREF="db_open.html">db_open(3)</A></B>.
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<B>-h</B> Specify a home directory for the database.
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<B>-l</B> Display log region statistics as described in
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<B><A HREF="db_log.html">db_log(3)</A></B>.
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<B>-M</B> Display internal information about the shared memory
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buffer pool. (The output from this option is often
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both voluminous and meaningless, and is intended only
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for debugging.)
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<B>-A</B> Display all information.
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<B>-h</B> Display buffers within hash chains.
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<B>-l</B> Display buffers within LRU chains.
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<B>-m</B> Display region memory information.
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<B>-m</B> Display shared memory buffer pool statistics as
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described in <B><A HREF="db_mpool.html">db_mpool(3)</A></B>.
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<B>-N</B> Don't acquire locks while displaying the statistics.
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This option is intended only for debugging corrupt
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regions and should not be used under any other
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circumstances.
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<B>-t</B> Display transaction region statistics as described in
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<B><A HREF="db_txn.html">db_txn(3)</A></B>.
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The db_stat utility attaches to DB shared memory regions.
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In order to avoid region corruption, it should always be
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given the chance to detach and exit gracefully. To cause
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db_stat to clean up after itself and exit, send it an
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interrupt signal (SIGINT).
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Values smaller than 10 million are generally displayed
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without any special notation. Values larger than 10
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million are normally displayed as ``<number>M''.
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The db_stat utility exits 0 on success, and >0 if an error
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occurs.
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</PRE>
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<H2>ENVIRONMENT VARIABLES</H2><PRE>
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The following environment variables affect the execution
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of db_stat:
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DB_HOME
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If the <B>-h</B> option is not specified and the environment
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variable DB_HOME is set, it is used as the path of
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the database home, as described in <B><A HREF="db_appinit.html">db_appinit(3)</A></B>.
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</PRE>
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<H2>SEE ALSO</H2><PRE>
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The DB library is a family of groups of functions that
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provides a modular programming interface to transactions
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and record-oriented file access. The library includes
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support for transactions, locking, logging and file page
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caching, as well as various indexed access methods. Many
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of the functional groups (e.g., the file page caching
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functions) are useful independent of the other DB
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functions, although some functional groups are explicitly
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based on other functional groups (e.g., transactions and
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logging). For a general description of the DB package,
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see <B><A HREF="db_intro.html">db_intro(3)</A></B>.
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<B><A HREF="db_archive.html">db_archive(1)</A></B>, <B><A HREF="db_checkpoint.html">db_checkpoint(1)</A></B>, <B><A HREF="db_deadlock.html">db_deadlock(1)</A></B>, <B><A HREF="db_dump.html">db_dump(1)</A></B>,
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<B><A HREF="db_load.html">db_load(1)</A></B>, <B><A HREF="db_recover.html">db_recover(1)</A></B>, <B><A HREF="db_stat.html">db_stat(1)</A></B>, <B><A HREF="db_intro.html">db_intro(3)</A></B>,
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<B><A HREF="db_appinit.html">db_appinit(3)</A></B>, <B><A HREF="db_cursor.html">db_cursor(3)</A></B>, <B><A HREF="db_dbm.html">db_dbm(3)</A></B>, <B><A HREF="db_internal.html">db_internal(3)</A></B>,
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<B><A HREF="db_lock.html">db_lock(3)</A></B>, <B><A HREF="db_log.html">db_log(3)</A></B>, <B><A HREF="db_mpool.html">db_mpool(3)</A></B>, <B><A HREF="db_open.html">db_open(3)</A></B>, <B><A HREF="db_thread.html">db_thread(3)</A></B>,
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<B><A HREF="db_txn.html">db_txn(3)</A></B>
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</PRE>
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