Brarchive not backing up offline redo log on RAC

Question

Hi all Oracle and SAP experts,
After running brarchive on my newly setup RAC system, the program reports that there are 'No offline redo log files found for processing'. Hence, non of the archive log files are being backup.
Tons of archive log files are generated in the archive log directory. I do not understand why brarchive is unable to locate these files.
There are 2 Windows RAC nodes. I used the command 'brarchive -u / -c force -p initTST.sap -sd' to trigger brarchive. It is using rman to backup to a windows shared folder. And the brbackup runs successfully.
The output from brarchive is below:
BR0002I BRARCHIVE 7.00 (16)
BR0006I Start of offline redo log processing: aebbxosu.svd 2009-07-24 14.07.36
BR0477I Oracle pfile F:\oracle\TST\102\database\initTST1.ora created from spfile F:\oracle\TST\102\database\spfile.ora
BR0101I Parameters
Name                           Value
oracle_sid                     TST1
oracle_home                    F:\oracle\TST\102
oracle_profile                 F:\oracle\TST\102\database\initTST1.ora
sapdata_home                   F:\oracle\TST
sap_profile                    F:\oracle\TST\102\database\initTST.sap
backup_dev_type                disk
archive_copy_dir              
10.11.0.101\backup\RAC_test
compress                       no
disk_copy_cmd                  rman
cpio_disk_flags                -pdcu
rman_compress                  no
archive_dupl_del               only
parallel_instances             TST2:F:\oracle\TST\102@TST2
system_info                    tstadm RACNODE1 Windows 5.2 Build 3790 Service Pack 2 AMD64
oracle_info                    TST 10.2.0.4.0 8192 1492 10504542 RACNODE1 UTF8 UTF8
sap_info                       620 SAPTST TST D1583565402 R3_ORA 0020087949
make_info                      NTAMD64 OCI_10201_SHARE Aug 22 2006
command_line                   brarchive -u / -c force -p initTST.sap -sd
BR0013W No offline redo log files found for processing
BR0007I End of offline redo log processing: aebbxosu.svd 2009-07-24 14.07.54
BR0280I BRARCHIVE time stamp: 2009-07-24 14.07.55
BR0004I BRARCHIVE completed successfully with warnings

Answer 1

I had set BR_TRACE to 15 and receive the following in my trace file:
BR0249I BR_TRACE: level 3, function BrCurrRedoGet exit with 0
BR0249I BR_TRACE: level 2, function BrInstCheck exit with -10
BR0248I BR_TRACE: level 2, function BrDiskStatGet entry with '
10.11.0.101\backup\RAC_test'
BR0250I BR_TRACE: level 2, function BrDiskStatGet exit with '19999863332864 9780518486016 9780518486016 9770967198432'
BR0248I BR_TRACE: level 2, function arch_last_get entry with 'F:\oracle\TST\saparch\archTST1.log'
BR0249I BR_TRACE: level 2, function arch_last_get exit with 0
BR0248I BR_TRACE: level 2, function BrArchNameGet entry with '0 TST1'
BR0250I BR_TRACE: level 2, function BrArchNameGet exit with 'G:\oracle\TST\oraarch\681026106_1_0.dbf'
BR0248I BR_TRACE: level 2, function BrNameBuild entry with '41 G:\oracle\TST\oraarch\681026106_1_0.dbf NULL'
BR0250I BR_TRACE: level 2, function BrNameBuild exit with 'G:\oracle\TST\oraarch'
BR0248I BR_TRACE: level 2, function BrFileStatGet entry with 'G:\oracle\TST\oraarch'
BR0250I BR_TRACE: level 2, function BrFileStatGet exit with '39171616256 0'
BR0248I BR_TRACE: level 2, function BrArchExist entry with 'TST1'
BR0248I BR_TRACE: level 3, function BrArchNameGet entry with '987656789 TST1'
BR0250I BR_TRACE: level 3, function BrArchNameGet exit with 'G:\oracle\TST\oraarch\1_1_987656789.dbf'
BR0249I BR_TRACE: level 2, function BrArchExist exit with -3
BR0248I BR_TRACE: level 2, function BrDiskStatGet entry with '
10.11.0.101\backup\RAC_test'
BR0248I BR_TRACE: level 2, function BrDbDisconnect entry with 'void'
BR0280I BRARCHIVE time stamp: 2009-07-27 09.41.42
BR0644I BR_TRACE: location BrDbDisconnect-1, SQL statement:
'COMMIT RELEASE'
BR0300I BR_TRACE: SQL code: 0, number of processed rows: 0
BR0248I BR_TRACE: level 3, function BrZombieKill entry with 'void'
BR0250I BR_TRACE: level 3, function BrZombieKill exit with 'void'
BR0249I BR_TRACE: level 2, function BrDbDisconnect exit with 0
BR0013W No offline redo log files found for processing
My current database incarnation is 681026106 but brarchive is searching for archivelog from incarnation 987656789 (1_1_987656789.dbf). As a workaround, I created dummy files (eg. 1_1_987656789.dbf') for each node and managed to trick brarchive into believing these are the real files. Subsequent backup works fine. Thanks Michael!