code: public String logDirectory()
      {
          if (tc.isEntryEnabled())
              Tr.entry(tc, "logDirectory", this);
          if (tc.isEntryEnabled())
              Tr.exit(tc, "logDirectory", _logDirectory);
          return _logDirectory;
      }
docs: Returns the physical location where a recovery log constructed from the target
  object will reside.
  
  @return String The phyisical log directory path