1、只有在RMAN下可以实现增量备份
2、Backup File Types
- Tablespaces
- Datafiles(current or copy)
- Control file(current or copy)
- Spfiles
- Archived logs
- Backup Sets
3、要执行RMAN数据库备份，必须要求Oracle Database Server必须处于archive mode下；
RMAN进行备份的时候，会将Online redo log files 进行一次alter system switch log file,然后再进行备份操作；把online redo log file的内容，写到archive log file里面，然后备份归档日志就可以了；因此RMAN不对online redo log file 做备份.
4、Backup Issues
- Backup datafiles
- Backup tablespaces
- Backup the control file
- Backup the server parameter file
- Backup the archived log files