采用rman的默认设置，对数据库进行了backup database备份。进行了一些操作后，然后直接关闭启动到mount状态
RMAN> run{
2> set until time "to_date('2010-10-16 23:14:42','yyyy-mm-dd hh24:mi:ss')";
3> restore database;
4> recover database;
5> }
executing command: SET until clause
Starting restore at 17-OCT-10
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=156 devtype=DISK
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00001 to /oracle/oradata/denver/system01.dbf
restoring datafile 00002 to /oracle/oradata/denver/undotbs01.dbf
restoring datafile 00003 to /oracle/oradata/denver/sysaux01.dbf
restoring datafile 00004 to /oracle/oradata/denver/users01.dbf
restoring datafile 00005 to /oracle/oradata/denver/example01.dbf
channel ORA_DISK_1: reading from backup piece /oracle/flash_recovery_area/DENVER/backupset/2010_10_16/o1_mf_nnndf_TAG20101016T230845_6cmhzz8t_.bkp
channel ORA_DISK_1: restored backup piece 1
piece handle=/oracle/flash_recovery_area/DENVER/backupset/2010_10_16/o1_mf_nnndf_TAG20101016T230845_6cmhzz8t_.bkp tag=TAG20101016T230845
channel ORA_DISK_1: restore complete, elapsed time: 00:01:26
Finished restore at 17-OCT-10
Starting recover at 17-OCT-10
using channel ORA_DISK_1
starting media recovery
archive log thread 1 sequence 10 is already on disk as file /oracle/archivelog/1_10_732510268.dbf
archive log filename=/oracle/archivelog/1_10_732510268.dbf thread=1 sequence=10
media recovery complete, elapsed time: 00:00:01
Finished recover at 17-OCT-10
RMAN> alter database open resetlogs;
database opened
发现刚才恢复的时间23:14:42有点早，于是想改为恢复时间点为23:17:26，于是再次关闭数据库，mount状态下，但是出错了
RMAN> run {
2> set until time "to_date('2010-10-16 23:17:26','yyyy-mm-dd hh24:mi:ss')";
3> restore database;
4> recover database;
5> }
executing command: SET until clause
using target database control file instead of recovery catalog
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of set command at 10/17/2010 00:45:40
RMAN-20207: UNTIL TIME or RECOVERY WINDOW is before RESETLOGS time
时间再前点恢复也不行：
RMAN> run {
2> set until time "to_date('2010-10-16 23:14:40','yyyy-mm-dd hh24:mi:ss')";
3> restore database;
4> recover database;
5> }
executing command: SET until clause
using target database control file instead of recovery catalog
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of set command at 10/17/2010 01:17:03
RMAN-20207: UNTIL TIME or RECOVERY WINDOW is before RESETLOGS time
这是为什么？那些归档都还在，难道我的rman做过一次不完全恢复后，就不能再不完全恢复了，跟没有换备份控制文件有关系吗？里面做了什么
--------------------------
Finished recover at 17-OCT-10
RMAN> alter database open resetlogs;
database opened
--------------------------------------
alter database open resetlogs;
你已经打开过了，所有不行了
你要 切换到你打开前的 对应物，进行恢复
list incarnation 看看
RMAN> list incarnation;
using target database control file instead of recovery catalog
List of Database Incarnations
DB KeyInc Key DB NameDB ID
STATUSReset SCNReset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 DENVER 4021391415 PARENT1
22-OCT-05
2 2 DENVER 4021391415 PARENT525876 16-OCT-10
3 3 DENVER 4021391415 CURRENT 620239 17-OCT-10
open resetlogs后不是截断redo日志吗？难道前前后后的归档都会收到影响，没用了啊
