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<title>Berkeley DB Reference Guide: Database statistics</title>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Access Methods</dl></h3></td>
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<h1 align=center>Database statistics</h1>
<p>The <a href="../../api_c/db_stat.html">DB->stat</a> function is the standard interface for obtaining database
statistics. Generally, <a href="../../api_c/db_stat.html">DB->stat</a> returns a set of statistics
about the underlying database, e.g., the number of key/data pairs in
the database, how the database was originally configured, and so on.
<p>There are two flags that you can set to customize the returned statistics:
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<p><dt><a href="../../api_c/db_stat.html#DB_CACHED_COUNTS">DB_CACHED_COUNTS</a><dd>Request an approximate key and key/data pair count. As obtaining an
exact count can be very performance intensive for large databases,
it is possible to request a previously cached count. Obviously, the
cached count is only an approximate count, and may be out-of-date.
<p><dt><a href="../../api_c/db_stat.html#DB_RECORDCOUNT">DB_RECORDCOUNT</a><dd>If the database is a Queue or Recno database, or a Btree database that
was configured so that it is possible to search it by logical record
number, return only a count of the records in the database.
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