bounds the size of the memory allocated for transactions.
            Child transactions are counted as active until they either commit or
            abort.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" title="Public property" /></td><td><a href="P_BerkeleyDB_DatabaseEnvironment_MetadataDir.htm">MetadataDir</a></td><td><div class="summary">
            The path of directory to store the persistent metadata.
            </div></td></tr><tr data="pub