腳本：

數(shù)據(jù)庫備份： backup database format='/u01/app/oracle/oradata/Backup/oradb_%d_%s.bak'; 

表空間備份：backup tablespace EXAMPLE format='/u01/app/oracle/oradata/Backup/%d_%p_%t_%c.dbf';        或者

RMAN> run{

2> allocate channel ch_1 type disk;

3> backup tablespace EXAMPLE

4> format '/u01/app/oracle/oradata/Backup/%d_%p_%t_%c.dbf';

5> }

（一）、數(shù)據(jù)庫全備份，這個數(shù)據(jù)量比較大

1.如果對整個數(shù)據(jù)庫進行備份，則需要先關閉數(shù)據(jù)庫，并啟動到mount狀態(tài)

[oracle@orcl oradata]$ rman target /

2.RMAN> list backup of database;

3.RMAN> shutdown immediate

database closed

database dismounted

Oracle instance shut down

4.RMAN> startup mount

connected to target database (not started)

Oracle instance started

database mounted

Total System Global Area    2755870720 bytes

Fixed Size                     2256432 bytes

Variable Size                671089104 bytes

Database Buffers            2063597568 bytes

Redo Buffers                  18927616 bytes

5.RMAN> backup database format='/u01/app/oracle/oradata/Backup/oradb_%d_%s.bak';

6.RMAN> alter database open;

database opened

可以查看到備份的文件有兩個，一個包括控制文件。一個包括數(shù)據(jù)文件

（二）、表空間備份

查看數(shù)據(jù)庫下的表空間，選擇你要備份的表空間，以example為例

SQL> select tablespace_name from dba_data_files;

TABLESPACE_NAME

------------------------------

USERS

UNDOTBS1

SYSAUX

SYSTEM

EXAMPLE

TABLESPACETEST01

6 rows selected.

[oracle@orcl oradata]$ rman target sys/410526 nocatalog;

RMAN> run{

2> allocate channel ch_1 type disk;

3> backup tablespace EXAMPLE

4> format '/u01/app/oracle/oradata/Backup/%d_%p_%t_%c.dbf';

5> }

RMAN> list backup of tablespace EXAMPLE;