-b|-backup 

This BRRECOVER command option specifies a BRBACKUP run from which to restore the database files.

Input syntax: -b|-backup [ <log_name>|last ]

Default: last

·        <log_name> : BRRECOVER restores database files from the BRBACKUP backup with the log name entered in < log_name > as b<encoded_timestamp>.<function_id>.

·        last : BRRECOVER restores the files from the last successful database backup.