BR0073E Setting of BRBACKUP lock failed

Problem:

BR0051I BRBACKUP 7.20 (25)
BR0055I Start of database backup: benini.qub 2014-03-18 08.00.26
BR0484I BRBACKUP log file: /oracle/SID/sapbackup/benini.qub
BR0071E BRBACKUP currently running or was killed
BR0072I Please delete file /oracle/SID/sapbackup/.lock.brb if BRBACKUP was killed
BR0073E Setting of BRBACKUP lock failed

BR0056I End of database backup: benini.qub 2014-03-18 08.00.26
BR0280I BRBACKUP time stamp: 2014-03-18 08.00.26
BR0054I BRBACKUP terminated with errors
[Major] From: OB2BAR_OMNISAP@orsapsrv1.in.com "OMNISAP"  Time: 03/18/2014 08:00:26 AM
BRBACKUP /usr/sap/SID/SYS/exe/run/brbackup -t online_split -d util_file -c -p initSID.sap.bc -m all -q split -u / returned 3

[Normal] From: BSM@cellsrv01.incom "orsapsrv1_SID01"  Time: 3/18/2014 8:00:27 AM
OB2BAR application on "orsapsrv1.in.com" disconnected.

Solution:

>> Login to the client with SID of the database and check for any brbackup process running.

*****No brbackup process running*****

# ps -ef | grep brbackup

root     17138  9230  0 08:19 pts/0    00:00:00 grep brbackup

>> Check for any progressing DP backups from monitor context. This can also be initiated from DB end too. Wait until the backup completes and then check for the brbackup process again. 

>> Kill the .lock.brb file <path - /oracle/SID/sapbackup/.lock.brb > if there was aborted/hung backup session. Start the backup spec which should complete.