Hi,
I had the same problem and got rid of by changing owner permission..
The "s" in the owner permissions means that the "setuid" is enabled, so these three commands brbackup, brarchive and brconnect are being executed with root permissions by SAP process.
-rwsrwxr-- 1 orasid sapsys 13542030 Nov 1 15:47 brbackup
-rwsrwxr-- 1 orasid sapsys 13385793 Nov 1 15:47 brarchive
-rwsrwxr-- 1 orasid sapsys 15952052 Nov 1 15:47 brconnect
-rwxr-xr-x 1 sidadm sapsys 16806620 Nov 1 15:47 brspace
-rwxr-xr-x 1 sidadm sapsys 14249766 Nov 1 15:46 brrecover
-rwxr-xr-x 1 sidadm sapsys 5847113 Nov 1 15:32 brrestore
-rwxr-xr-x 1 sidadm sapsys 6740867 Nov 1 15:32 brtools
But the root user is not granted by oracle in our case for connection. That is why you had to change owner to sidadm for these three commands as others have and "setuid permission" is disabled itself.
[root@hostname]# chown sidadm:sapsys ./brbackup
[root@hostname]# chown sidadm:sapsys ./brarchive
[root@hostname]# chown sidadm:sapsys ./brconnect
Regards
Pavel