BR0071E BRBACKUP currently running or was killed
Maybe your database is in backup mode
sqlplus / assysdba
SELECT * FROM V$BACKUP;
if u can see records with status = ACTIVE then:
ALTER DATABASE END BACKUP;
also delete the .lock file in /oracle/SID/sapbackup if the file exist, (Remember, list that with ls -lrta because is a hidden file)
hope this help
Regards.
Chrisropher Arias