各位，最近在做ADG的时候遇到一个离奇问题，RMAN备份复制到备库后，在主库执行duplicate target database for standby nofilenamecheck;后，备库的alert日志会报以下错误：
Completed: alter database mount standby database
ARC3: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
Sun Aug 08 21:56:27 2021
Using STANDBY_ARCHIVE_DEST parameter default value as /u02/archivelog
Errors in file /u01/app/oracle/diag/rdbms/product/product/trace/product_lgwr_17653.trc:
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/redo01.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/product/product/trace/product_lgwr_17653.trc:
ORA-00313: open failed for members of log group 1 of thread 1
ORA-00312: online log 1 thread 1: '/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/redo01.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/product/product/trace/product_lgwr_17653.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/redo02.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/product/product/trace/product_lgwr_17653.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/redo02.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/product/product/trace/product_lgwr_17653.trc:
ORA-00313: open failed for members of log group 3 of thread 1
ORA-00312: online log 3 thread 1: '/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/redo03.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /u01/app/oracle/diag/rdbms/product/product/trace/product_lgwr_17653.trc:
ORA-00313: open failed for members of log group 3 of thread 1
ORA-00312: online log 3 thread 1: '/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/redo03.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Sun Aug 08 22:11:04 2021
db_recovery_file_dest_size of 4182 MB is 0.00% used. This is a
user-specified limit on the amount of space that will be used by this
database for recovery-related files, and does not reflect the amount of
space available in the underlying filesystem or ASM diskgroup.
然后整个过程就卡在那里不动了，
/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog这个目录是存在的，权限也没问题，另外主库那边的redo是放在/u01/app/oracle/oradata/product/默认路径下的
尝试在备库修改以下参数，报错依然出现（无论我更改备库2的路径还是保持原状都一样），如：
alter system set log_file_name_convert='/u01/app/oracle/oradata/product/','/u01/app/oracle/oradata/product/' scope=spfile;
或
alter system set log_file_name_convert='/u01/app/oracle/oradata/product/','/u01/app/oracle/fast_recovery_area/PRODUCT/onlinelog/' scope=spfile;
报错依旧，之前部署过很多DG项目了，配置过程没问题，这次遇到这个问题，百思不得奇解！？有遇到过类似情况的朋友吗？
