下面我們做乙個實驗，演示如何對oracle進行基於時間點的不完全恢復（在實驗之前請確保資料庫具有有效備份）：
獲取此時的時間並記錄下來：
sql> select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;
to_char(sysdate,'yy
-------------------
2014-08-23 00:47:49
把hh使用者下的h2刪除：
sql> drop table h2;
table dropped.
使用rman將資料庫恢復到刪除h2之前：
關閉資料庫，啟動rman，重啟資料庫到mount：
sql> conn /as sysdba
connected.
sql> shutdown immediate;
database closed.
database dismounted.
oracle instance shut down.
使用rman將資料庫恢復到2014-08-23 00:47:49
rman> sql 'alter session set nls_date_format="yyyy-mm-dd hh24:mi:ss"';
sql statement: alter session set nls_date_format="yyyy-mm-dd hh24:mi:ss"
rman> restore database until time '2014-08-23 00:47:49';
starting restore at 23-aug-14
allocated channel: ora_disk_1
channel ora_disk_1: sid=18 device type=disk
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: restored backup piece 1
channel ora_disk_1: restore complete, elapsed time: 00:00:06
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: restored backup piece 1
channel ora_disk_1: restore complete, elapsed time: 00:00:35
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: restored backup piece 1
channel ora_disk_1: restore complete, elapsed time: 00:00:45
finished restore at 23-aug-14
rman> recover database until time '2014-08-23 00:47:49';
starting recover at 23-aug-14
using channel ora_disk_1
starting media recovery
media recovery complete, elapsed time: 00:00:16
finished recover at 23-aug-14
使用resetlogs開啟資料庫：
sql> alter database open resetlogs;
database altered.
sql> select * from hh.h2;
id
----------
1
2
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