List of Backup Pieces
BP Key BS Key Pc# Cp# Status Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
302 302 1 1 EXPIRED DISK /u01/orabackup/backupsets/ora10g-4175411955_20141121_864227317_351.arc
303 303 1 1 EXPIRED DISK /u01/orabackup/backupsets/ora10g-4175411955_20141121_864227354_352.db
304 304 1 1 EXPIRED DISK /u01/orabackup/backupsets/ora10g-4175411955_20141121_864227471_353.arc
305 305 1 1 EXPIRED DISK /u01/orabackup/backupsets/ora10g-c-4175411955-20141121-04.ctl
deleted backup piece
backup piece handle=/u01/orabackup/backupsets/ora10g-4175411955_20141121_864227317_351.arc recid=302 stamp=864227318
deleted backup piece
backup piece handle=/u01/orabackup/backupsets/ora10g-4175411955_20141121_864227354_352.db recid=303 stamp=864227356
deleted backup piece
backup piece handle=/u01/orabackup/backupsets/ora10g-4175411955_20141121_864227471_353.arc recid=304 stamp=864227472
deleted backup piece
backup piece handle=/u01/orabackup/backupsets/ora10g-c-4175411955-20141121-04.ctl recid=305 stamp=864227475
Deleted 4 EXPIRED objects
现在把由RMAN脚本生成的备份集删除了，再查看一次
RMAN> list backup;
List of Backup Sets
===================
BS Key Type LV Size Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
286 Full 880.50M DISK 00:01:35 2014-11-12
BP Key: 286 Status: AVAILABLE Compressed: NO Tag: TAG20141112T141548
Piece Name: /u01/app/oracle/flash_recovery_area/ORA10G/backupset/2014_11_12/o1_mf_nnndf_TAG20141112T141548_b65yrnkg_.bkp
List of Datafiles in backup set 286
File LV Type Ckp SCN Ckp Time Name
---- -- ---- ---------- ---------- ----
1 Full 1202813 2014-11-12 /u01/app/oracle/oradata/ora10g/system01.dbf
2 Full 1202813 2014-11-12 /u01/app/oracle/oradata/ora10g/undotbs01.dbf
3 Full 1202813 2014-11-12 /u01/app/oracle/oradata/ora10g/sysaux01.dbf
4 Full 1202813 2014-11-12 /u01/app/oracle/oradata/ora10g/users01.dbf
5 Full 1202813 2014-11-12 /u01/app/oracle/oradata/ora10g/example01.dbf
6 Full 1202813 2014-11-12
还有一个备份集在fra中做的全库备份，也将其删除
RMAN> host;
[oracle@ora10g backupsets]$ cd /u01/app/oracle/flash_recovery_area/ORA10G/backupset/
[oracle@ora10g backupset]$ ll
total 4
drwxr-x--- 2 oracle oinstall 4096 Nov 12 14:15 2014_11_12
[oracle@ora10g backupset]$ rm -rf *
[oracle@ora10g backupset]$ exit
exit
host command complete
RMAN> crosscheck backup;
using channel ORA_DISK_1
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u01/app/oracle/flash_recovery_area/ORA10G/backupset/2014_11_12/o1_mf_nnndf_TAG20141112T141548_b65yrnkg_.bkp recid=286 stamp=863446548
Crosschecked 1 objects
RMAN> delete noprompt expired backup;
using channel ORA_DISK_1
List of Backup Pieces
BP Key BS Key Pc# Cp# Status Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
286 286 1 1 EXPIRED DISK /u01/app/oracle/flash_recovery_area/ORA10G/backupset/2014_11_12/o1_mf_nnndf_TAG20141112T141548_b65yrnkg_.bkp
deleted backup piece
backup piece handle=/u01/app/oracle/flash_recovery_area/ORA10G/backupset/2014_11_12/o1_mf_nnndf_TAG20141112T141548_b65yrnkg_.bkp recid=286 stamp=863446548
Deleted 1 EXPIRED objects
RMAN> list backup summary;
RMAN> list backup;
RMAN> exit
好了，现在数据库的RMAN备份彻底没有了，继续我们的测试：
--开启测试表空间热备份模式
SQL> alter tablespace zlm begin backup;
Tablespace altered.
SQL> select * from v$backup;
FILE# STATUS CHANGE# TIME
----- ------------------ ---------- ----------
1 NOT ACTIVE 0
2 NOT ACTIVE 0
3 NOT ACTIVE 0
4 NOT ACTIVE 0
5 NOT ACTIVE 0
6 ACTIVE 1317685 2014-11-26
6 rows selected.
此时可以看到，开启热备模式以后，6号文件的状态从NOT ACTIVE变成了ACTIVE
SQL> select name,checkpoint_change# from v$datafile;