code: public static String getOracleSrid(final String srid, final Database database) {
        final String oracleSrid;
        if (StringUtils.trimToNull(srid) == null) {
           oracleSrid = null;
        } else if (EPSG_TO_ORACLE_MAP.containsKey(srid)) {
           oracleSrid = EPSG_TO_ORACLE_MAP.get(srid);
        } else {
           oracleSrid = loadOracleSrid(srid, database);
           EPSG_TO_ORACLE_MAP.put(srid, oracleSrid);
        }
        return oracleSrid;
     }
docs: Converts the given EPSG SRID to the corresponding Oracle SRID.
  
  @param srid
  the EPSG SRID.
  @param database
  the database instance.
  @return the corresponding Oracle SRID.