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<title>Berkeley DB Reference Guide: Environment variables</title>
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<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Programmer Notes</dl></h3></td>
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<h1 align=center>Environment variables</h1>
<p>The Berkeley DB library uses the following environment variables:
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<p><dt>DB_HOME<dd>If the environment variable DB_HOME is set, it is used as part of
<a href="../../ref/env/naming.html">File Naming</a>.
Note, for the DB_HOME variable to take effect, either the
<a href="../../api_c/env_open.html#DB_USE_ENVIRON">DB_USE_ENVIRON</a> or <a href="../../api_c/env_open.html#DB_USE_ENVIRON_ROOT">DB_USE_ENVIRON_ROOT</a> flags must be
specified to <a href="../../api_c/env_open.html">DBENV->open</a>.
<p><dt>TMPDIR, TEMP, TMP, TempFolder<dd>The TMPDIR, TEMP, TMP and TempFolder environment variables are all
checked as locations in which to create temporary files. See
<a href="../../api_c/env_set_tmp_dir.html">DBENV->set_tmp_dir</a> for more information.
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