Data Guard appear to be OK but cannot open standby

I configured data Guard physical standby on Red hat with Oracle 11.2. I followed the doc

http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10g_RACPrimarySingleInstancePhysicalStandby.pdf

. Things went smoothly and after the duplication completed and created satndby rego log on the satndby I ran

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE DISCONNECT;

Then tried to open standby database, but got error

SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-10456: cannot open standby database; media recovery session may be in progress

I checked the gollowing views for DG status

SQL> select thread#, max(sequence#) "Last Primary Seq Generated" from v$archived_log
 group by thread# order by 1;
  2
   THREAD# Last Primary Seq Generated
---------- --------------------------
         1                       1372
         2                        803
         3                        788

The same result in primary and standby.

SQL> select recid,SEQUENCE#,blocks,APPLIED,status,first_chg_time,completed from (
  2  SELECT recid,SEQUENCE#,name log_name,blocks,APPLIED,status,
  3   to_char(first_time,'mmdd-hh24miss') first_chg_time,
  4   to_char(completion_time,'mmdd-hh24miss') completed
  5   FROM V$ARCHIVED_LOG where first_time< sysdate+1 ORDER BY SEQUENCE# desc,1
  6  ) where rownum<16;

     RECID  SEQUENCE#     BLOCKS APPLIED   S FIRST_CHG_T COMPLETED
---------- ---------- ---------- --------- - ----------- -----------
         2       1372       5264 YES       A 0517-033143 0517-034827
         1       1371       1382 YES       A 0517-032616 0517-034827
         8       1370      19913 YES       A 0517-024906 0517-035620
         7       1369       3264 YES       A 0517-023805 0517-035619
         4        803       1680 NO        A 0517-033144 0517-034828
         6        802        686 YES       A 0517-032617 0517-034924
        10        801       7096 YES       A 0517-024906 0517-035621
         9        800       1080 YES       A 0517-023806 0517-035620
         3        788       1565 NO        A 0517-033144 0517-034828
         5        787        488 YES       A 0517-032616 0517-034921
        12        786       6644 YES       A 0517-024906 0517-035622
        11        785       1486 YES       A 0517-023806 0517-035622

Note that sequence# 1372 has been applied but 803 and 788 are not

select facility,severity,message_num msg_num,timestamp,message from v$dataguard_status order by TIMESTAMP desc
) where rownum<20;
  2    3
FACILITY                 SEVERITY         MSG_NUM TIMESTAMP     MESSAGE
------------------------ ------------- ---------- ------------- -------------------------------------------------------
Log Apply Services       Warning               74 0517 03:56:26 Media Recovery Waiting for thread 1 sequence 1373 (in t
                                                                ransit)

Log Apply Services       Informational         68 0517 03:56:25 Media Recovery Log /u01/flash/flashback_recovery_area/C
                                                                CHDR/archivelog/2010_05_17/o1_mf_1_1371_5z20ptt7_.arc

Here sequence 1373 is in transfer. But 1372 is not even exist in primary according to result of query 1. I waited for 20 minutes is still not done. I cannot open database.

What else can I do to open the database?