RMAN Learning 1

1 rman must at least work in the Mount state, that is, there is a control file. Start method: RMAN target/

2. Run the OS command from RMAN:
Host; then you can jump out of RMAN
Exit; return to RMAN
Run the SQL command from RMAN:
SQL "SQL commands"

3 backup [tag "think rman_backup_lab_1"] database;
Tablespace users;
Datafile 4;
In essence, the above several forms are backup of data files, that is, physical backup.

4 restore: Restore (copy)
Recover: Recovery

5. RMAN reads the diary under the guidance of the control file, which is fast. You Need To Ask logs for manual backup.

6. RMAN backup can only be restored and restored by RMAN.

7. RMAN cannot back up online redo logs.

8 flash_recovery_area: the backup and recovery data exists here, so it should be cleaned frequently, but the control file must be
And keep the image file of the log file. If Flash is full, an error will be reported during Backup.

9. RMAN can perform Incremental backup. However, the backup must start from level 0. For example, perform Incremental backup on the users tablespace:
Backup tag 'in in _ users_incremental_0_backup 'incremental level 0 tablespace users
Backup tag 'in in _ users_incre_1_backup 'incremental Level 1 tablespace users

10 RMAN backup skips data blocks on hwm. All backups are smaller than manual backups.

11. RMAN backup is related to the large pool.