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<h2 class="title" style="clear: both"><a id="set_lk_detect_parameter"></a>set_lk_detect</h2>
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<p>
Sets the maximum number of locking entities supported by the Berkeley DB
environment. This value is used by Berkeley DB to estimate how much
space to allocate for various lock-table data structures.
When using the DB, the default value is 2,000 lockers.
</p>
<p>
The syntax of this parameter in the <code class="literal">DB_CONFIG</code> file is
a single line with the string <code class="literal">set_lk_detect</code>,
one or more whitespace characters, and the method <span class="bold"><strong>detect </strong></span>parameter
as a string. The detect parameter configures the deadlock detector. The deadlock detector will reject the
lock request with the lowest priority. If multiple lock requests have the lowest priority, then
the detect parameter is used to select which of those lock requests to reject.
</p>
<p> For example:</p>
<pre class="programlisting">set_lk_detect DB_LOCK_OLDEST</pre>
<p> Sets the deadlock detector such that the lock request for the locker ID with the oldest lock is rejected.
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<p>The <span class="bold"><strong>detect </strong></span>parameter values are:
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DB_LOCK_DEFAULT
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DB_LOCK_EXPIRE
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DB_LOCK_MAXLOCKS
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DB_LOCK_MAXWRITE
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DB_LOCK_MINLOCKS
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DB_LOCK_MINWRITE
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DB_LOCK_OLDEST
</li>
<li>
DB_LOCK_RANDOM
</li>
<li>
DB_LOCK_YOUNGEST
</li>
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<p>For more information, see <a class="xref" href="envset_lk_detect.html" title="DB_ENV->set_lk_detect()">DB_ENV->set_lk_detect()</a>. </p>
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