code: public final void loadConfiguration(final String pDirName,
      final String pFileName) throws Exception {
      this.mngSettings.loadConfiguration(pDirName, pFileName);
      loadPropertiesBase(pDirName);
      loadSqlTables();
    }
docs: <p>Load configuration from xml.</p>
  @param pDirName properties base dir name e.g. "beige-orm"
  @param pFileName properties file name e.g. persistence-postgresql.xml
  @throws Exception - an exception