C library <span class="bold"><strong>malloc</strong></span>(3) is used.  The caller is responsible
         for deallocating the memory.  To deallocate the memory, free the memory reference;
         references inside the returned memory need not be individually freed.
    </p>
      <p>
         Log cursor handles (returned by the <a class="xref" href="logcursor.html" title="DbEnv::log_cursor()">DbEnv::log_cursor()</a>
         method) may have open file descriptors for log files in the database environmen