Recover a Database from Tape Checkpoints
To recover a database whose checkpoints are on tape
1. Mount the tape reel containing the checkpoints.
2. Issue a rollforwarddb command at the operating system prompt, naming the tape drive as the device:
rollforwarddb +c +j -mdevice dbname
The checkpoint is read from the tape and the journal files are applied, if the database is journaled, to bring your database up to date.