Warning in backup

hello alll,

I am getting following warning in backup.

BR0252W Function fopen() failed for '/oracle/RT1/102_64/sapbackup/bdwrvfte.afp' at location BrFileStatGet-8

BR0253W errno 13: Permission denied

BR0252W Function fopen() failed for '/oracle/RT1/102_64/sapbackup/bdwrvfob.afp' at location BrFileStatGet-8

BR0253W errno 13: Permission denied

BR0252W Function fopen() failed for '/oracle/RT1/102_64/sapbackup/bdwrvflu.tib' at location BrFileStatGet-8

BR0253W errno 13: Permission denied

BR0252W Function fopen() failed for '/oracle/RT1/102_64/sapbackup/bdwrvery.afp' at location BrFileStatGet-8

BR0253W errno 13: Permission denied

pls help

regards,

Pramod