Restore the database from a whole consistent backup and start the database in MOUNT mode. Then, open the database with the RESETLOGS option after performing a cancel-based recovery.
Restore the database from a whole consistent backup and start the database in MOUNT mode. Then, drop the lost redo log group and open the database with the RESETLOGS option after performing a cancel-based recovery.
Restore the database from a whole consistent backup and start the database in MOUNT mode. Then, clear the lost redo log group and open the database with the RESETLOGS option after performing a cancel-based recovery.
Do nothing. You do not need to recover the database in this case; an instance recovery will be performed by the SMON process on startup.