Concatenate ID Oracle 10g

concatenate

SELECT SUBSTR (SYS_CONNECT_BY_PATH (id_reporte , ','), 2) csv
      FROM (SELECT id_reporte , ROW_NUMBER () OVER (ORDER BY id_reporte ) rn,
                   COUNT (*) OVER () cnt
              FROM geo_reporte_servicios WHERE ANO='2014' AND COD_CA='CEM001' AND UBIGEO='030101' AND COD_SERV='SER001')
     WHERE rn = cnt
START WITH rn = 1
CONNECT BY rn = PRIOR rn + 1

--RESULT
-- 2163,2165,2167,2169,2171,2173,2175,2177,2179,2181,2183,2185