整体架构如下：

准备在主库的节点1连接到备库使用rman重建物理备库的时候报错如下：

[oracle@XXX21DBRAC1 dbs]$ rman target / auxiliary sys/oracle@XXXDB_S

Recovery Manager: Release 11.2.0.3.0 - Production on Tue Apr 23 18:22:37 2013

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: XXXDB (DBID=1566881586)
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-00554: initialization of internal recovery manager package failed
RMAN-04006: error from auxiliary database: ORA-01017: invalid username/password; logon denied

注：在将备库和主库口令文件一致化后，以及在备库修改完sys密码后依然报相同的错误

解决过程：
查看备库告警日志，发现有个数据文件有问题，于是将该数据文件离线

[oracle@XXX21DBDG ~]$ sqlplus "/as sysdba"

SQL*Plus: Release 11.2.0.3.0 Production on Tue Apr 23 18:22:44 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> alter database mount;

Database altered.

SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-10458: standby database requires recovery
ORA-01157: cannot identify/lock data file 8 - see DBWR trace file
ORA-01111: name for data file 8 is unknown - rename to correct file
ORA-01110: data file 8:
'/u01/app/oracle/product/11.2.0/dbhome_1/dbs/UNNAMED00008'


SQL> alter database datafile 8 offline;
alter database datafile 8 offline
*
ERROR at line 1:
ORA-01668: standby database requires DROP option for offline of data file


SQL> alter database datafile 8 offline drop;

Database altered.

SQL> shutdown immedaite;
SP2-0717: illegal SHUTDOWN option
SQL> shutdown immediate;
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL> startup nomount;
ORACLE instance started.

Total System Global Area 1.0689E+10 bytes
Fixed Size                  2237776 bytes
Variable Size            5637147312 bytes
Database Buffers         5033164800 bytes
Redo Buffers               16924672 bytes

注：再次在主库使用rman连接到备库重建备库报相同错误。

于是修改备库监听文件：
原监听文件：

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (GLOBAL_DBNAME = XXXdb_s)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = XXXdb)
    )
  )

LISTENER =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.1.92)(PORT = 1521))
  )

ADR_BASE_LISTENER = /u01/app/oracle

修改后：

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = XXXdb_s)
      (ORACLE_HOME = /u01/app/oracle/product/11.2.0/dbhome_1)
      (SID_NAME = XXXdb)
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.1.92)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
    )
  )

ADR_BASE_LISTENER = /u01/app/oracle

在完成以上修改后，可以正常重建备库。

[oracle@XXX21DBRAC1 ~]$ rman target / auxiliary sys/oracle@XXXDB_S

Recovery Manager: Release 11.2.0.3.0 - Production on Tue Apr 23 18:45:45 2013

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

connected to target database: XXXDB (DBID=1566881586)
connected to auxiliary database: XXXDB (not mounted)

RMAN> duplicate target database for standby;

Starting Duplicate Db at 23-APR-13
using target database control file instead of recovery catalog
allXXXted channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=394 device type=DISK

contents of Memory Script:
{
   restore clone standby controlfile;
}
executing Memory Script

Starting restore at 23-APR-13
using channel ORA_AUX_DISK_1

channel ORA_AUX_DISK_1: restoring control file
channel ORA_AUX_DISK_1: copied control file copy
input file name=/tmp/racdb_st.ctl
output file name=/oradata/XXXdb/controlfile/current.261.788703923
output file name=/u01/app/oracle/product/11.2.0/dbhome_1/dbs/oradata/XXXdb/controlfile/current.260.788703923
Finished restore at 23-APR-13

contents of Memory Script:
{
   sql clone 'alter database mount standby database';
}
executing Memory Script

sql statement: alter database mount standby database
... ...