ORA-27037: unable to obtain file status

In Data guard Scenario: RMAN error



RMAN> backup archivelog from sequence 4 until sequence 79;

Starting backup at 10-JUL-12
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 07/10/2012 22:48:00
RMAN-06059: expected archived log not found, loss of archived log compromises recoverability
ORA-19625: error identifying file /u02/pune/archivelog/ARC_1_4_787996832.dbf
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3


RMAN> backup archivelog all;

Starting backup at 10-JUL-12
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 07/10/2012 22:49:22
RMAN-06059: expected archived log not found, loss of archived log compromises recoverability
ORA-19625: error identifying file /u02/pune/archivelog/ARC_1_4_787996832.dbf
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3

RMAN> backup archivelog from SCN 917572 until SCN 1131578;

Starting backup at 10-JUL-12
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 07/10/2012 22:56:19
RMAN-06059: expected archived log not found, loss of archived log compromises recoverability
ORA-19625: error identifying file /u02/pune/archivelog/ARC_1_4_787996832.dbf
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3

=======
Solution:
=======

I have placed primary to standby starting 3 logfiles

1
2
3

they have been register on standby database but again check the rman show error:


RMAN> backup archivelog all


Starting backup at 10-JUL-12
using channel ORA_DISK_1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 07/10/2012 22:56:19
RMAN-06059: expected archived log not found, loss of archived log compromises recoverability
ORA-19625: error identifying file /u02/pune/archivelog/ARC_1_4_787996832.dbf
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3


RMAN> crosscheck archivelog all;
RMAN> backup archivelog all;