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这篇文章主要介绍RMAN如何恢复drop purge的表，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
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@ORA12C> alter session set nls_date_format='yyyy-mm-dd hh34:mi:ss'; Session altered. SYS@ORA12C> create table t_0920 as select * from dba_objects; Table created. SYS@ORA12C> select count(*) from t_0920; COUNT(*) ----------------- 91691 1 row selected. SYS@ORA12C> select sysdate from dual; SYSDATE ------------------- 2015-09-20 14:17:49 1 row selected. SYS@ORA12C> drop table t_0920 purge; Table dropped. SYS@ORA12C> desc t_0920; ERROR: ORA-04043: object t_0920 does not exist SYS@ORA12C> create table t_09201 as select * from dba_objects; Table created. SYS@ORA12C> select count(*) from t_09201; COUNT(*) ----------------- 91691 1 row selected. SYS@ORA12C> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SYS@ORA12C> startup mount; ORACLE instance started. Total System Global Area 729808896 bytes Fixed Size 2928680 bytes Variable Size 570429400 bytes Database Buffers 150994944 bytes Redo Buffers 5455872 bytes Database mounted.
现在需要把t_0920表恢复过来：
run{
sql "alter session set nls_date_format=''yyyy-mm-dd hh34:mi:ss''";
set until time '2015-09-20 14:17:49';
restore database;
recover database;
6> }
using target database control file instead of recovery catalog
sql statement: alter session set nls_date_format=''yyyy-mm-dd hh34:mi:ss''
executing command: SET until clause
Starting restore at 20-SEP-15
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=355 device type=DISK
creating datafile file number=2 name=/u01/app/oracle/oradata/ORA12C/t2.dbf
channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /u01/app/oracle/oradata/ORA12C/system01.dbf
channel ORA_DISK_1: restoring datafile 00003 to /u01/app/oracle/oradata/ORA12C/sysaux01.dbf
channel ORA_DISK_1: restoring datafile 00004 to /u01/app/oracle/oradata/ORA12C/undotbs01.dbf
channel ORA_DISK_1: restoring datafile 00005 to /u01/app/oracle/oradata/ORA12C/example01.dbf
channel ORA_DISK_1: restoring datafile 00006 to /u01/app/oracle/oradata/ORA12C/users01.dbf
channel ORA_DISK_1: reading from backup piece /u01/app/oracle/fast_recovery_area/ORA12C/backupset/2015_09_20/o1_mf_nnndf_TAG20150920T120820_bzwd9ntd_.bkp
channel ORA_DISK_1: piece handle=/u01/app/oracle/fast_recovery_area/ORA12C/backupset/2015_09_20/o1_mf_nnndf_TAG20150920T120820_bzwd9ntd_.bkp tag=TAG20150920T120820
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:01:56
Finished restore at 20-SEP-15
Starting recover at 20-SEP-15
using channel ORA_DISK_1
starting media recovery
archived log for thread 1 with sequence 18 is already on disk as file /u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_18_bzwh058r_.arc
archived log for thread 1 with sequence 19 is already on disk as file /u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_19_bzwhh60d_.arc
archived log for thread 1 with sequence 20 is already on disk as file /u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_20_bzwhzsts_.arc
archived log for thread 1 with sequence 1 is already on disk as file /u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_1_bzwmprks_.arc
archived log file name=/u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_18_bzwh058r_.arc thread=1 sequence=18
archived log file name=/u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_19_bzwhh60d_.arc thread=1 sequence=19
archived log file name=/u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_20_bzwhzsts_.arc thread=1 sequence=20
archived log file name=/u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_1_bzwm5k1c_.arc thread=1 sequence=1
archived log file name=/u01/app/oracle/fast_recovery_area/ORA12C/archivelog/2015_09_20/o1_mf_1_1_bzwmprks_.arc thread=1 sequence=1
media recovery complete, elapsed time: 00:00:07
Finished recover at 20-SEP-15
RMAN> alter database open resetlogs;
Statement processed验证：t_0920 表已经恢复了，t_09201表不存在了。
SYS@ORA12C> select count(*) from t_0920; COUNT(*) ----------------- 91691 1 row selected. SYS@ORA12C> select count(*) from t_09201; select count(*) from t_09201 * ERROR at line 1: ORA-00942: table or view does not exist
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