因为只读表空间在第一次备份后 后面的应用都不会修改到它 ,所以在后面的备份当中为了减少备份时间和空间

都可以不备份只读表空间

C:\Documents and Settings\Paul Yi>sqlplus "/as sysdba"

SQL*Plus: Release 9.2.0.4.0 - Production on Wed May 21 16:28:20 2008

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production

SQL> select tablespace_name,status from dba_tablespaces;

TABLESPACE_NAME                STATUS
------------------------------ ---------
SYSTEM                         ONLINE
UNDOTBS1                       ONLINE
TEMP                           ONLINE
EXAMPLE                        ONLINE
INDX                           ONLINE
TOOLS                          READ ONLY
USERS                          ONLINE

7 rows selected.

SQL>

RMAN> backup full database format 'D:\backup\%U';

Starting backup at 21-MAY-08
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=D:\ORACLE\ORADATA\PUBTEST\SYSTEM01.DBF
input datafile fno=00002 name=D:\ORACLE\ORADATA\PUBTEST\UNDOTBS01.DBF
input datafile fno=00004 name=D:\ORACLE\ORADATA\PUBTEST\INDX01.DBF
input datafile fno=00006 name=D:\ORACLE\ORADATA\PUBTEST\USERS01.DBF
input datafile fno=00003 name=D:\ORACLE\ORADATA\PUBTEST\EXAMPLE01.DBF
input datafile fno=00005 name=D:\ORACLE\ORADATA\PUBTEST\TOOLS01.DBF
channel ORA_DISK_1: starting piece 1 at 21-MAY-08
channel ORA_DISK_1: finished piece 1 at 21-MAY-08
piece handle=D:\BACKUP\03JGUKKC_1_1 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:25
Finished backup at 21-MAY-08

Starting Control File and SPFILE Autobackup at 21-MAY-08
piece handle=D:\ORACLE\ORA92\DATABASE\C-799229701-20080521-01 comment=NONE
Finished Control File and SPFILE Autobackup at 21-MAY-08

RMAN> backup full database format 'D:\backup\%U' skip readonly;

Starting backup at 21-MAY-08
using channel ORA_DISK_1
skipping datafile 5; already backed up 2 time(s)
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=D:\ORACLE\ORADATA\PUBTEST\SYSTEM01.DBF
input datafile fno=00002 name=D:\ORACLE\ORADATA\PUBTEST\UNDOTBS01.DBF
input datafile fno=00004 name=D:\ORACLE\ORADATA\PUBTEST\INDX01.DBF
input datafile fno=00006 name=D:\ORACLE\ORADATA\PUBTEST\USERS01.DBF
input datafile fno=00003 name=D:\ORACLE\ORADATA\PUBTEST\EXAMPLE01.DBF
channel ORA_DISK_1: starting piece 1 at 21-MAY-08
channel ORA_DISK_1: finished piece 1 at 21-MAY-08
piece handle=D:\BACKUP\05JGUL2B_1_1 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:35
Finished backup at 21-MAY-08

Starting Control File and SPFILE Autobackup at 21-MAY-08
piece handle=D:\ORACLE\ORA92\DATABASE\C-799229701-20080521-02 comment=NONE
Finished Control File and SPFILE Autobackup at 21-MAY-08