frecover

I have machine (HP-UX) 11.x and I took backup using fbackup (took 4 DDS tapes) then i did restore using frecover . the restore
failed on the 4th tape . and the process killed .

Can I restore only the 4th tape. or I have to do full recover from biginning ?

When a restore fails because frecover encountered a problem, it offer you a chance to write recovery information into a file. If you did that, you should be able use the -R option to restart the recover. If not, you will need to start over as far as I know.