配置Oracle11gR2 Datagurad出现ORA-10458错误

备库：
SQL> alter database open read only;
alter database open read only
*
ERROR at line 1:
ORA-10458: standby database requires recovery
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: '/u01/app/oracle/oradata/bhoms/system01.dbf'

查看备库：
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;

SWITCHOVER_STATUS
--------------------
TO PRIMARY

查看主库：
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;

SWITCHOVER_STATUS
--------------------
NOT ALLOWED

再次查看主库的参数：
SQL> show parameter LOG_ARCHIVE_DEST_2

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_2                   string      service=standby lgwr async noa
                                                 ffirm
原来这里设置错误：
SQL> alter system set log_archive_dest_2='service=bhoms02 async valid_for=(online_logfiles,primary_role) db_unique_name=bhoms02';

再查主库：
SQL> SELECT SWITCHOVER_STATUS FROM V$DATABASE;

SWITCHOVER_STATUS
--------------------
TO STANDBY

查看备库：
SQL> show parameter LOG_ARCHIVE_DEST_2

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
log_archive_dest_2                   string      service=standby lgwr async noa
                                                 ffirm
原来这里设置错误：
SQL> alter system set log_archive_dest_2='service=bhoms01 async valid_for=(online_logfiles,primary_role) db_unique_name=bhoms01';

重启备库，解决问题：
SQL> shutdown immediate;
ORA-01109: database not open

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

Total System Global Area 6747725824 bytes
Fixed Size                  2213976 bytes
Variable Size            5100275624 bytes
Database Buffers         1610612736 bytes
Redo Buffers               34623488 bytes
SQL> alter database mount standby database;

Database altered.

SQL> alter database open read only;

Database altered.

SQL> alter database recover managed standby database disconnect from session;

Database altered.

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