oracle数据库中的内容全部丢失,只有RMAN的备份文件(包括数据，参数，控制文件)，恢复数据库到备份状态

下面是数据中的数据文件，参数文件，控制文件全部丢失，只有RMAN备份的文件，包括数据文件，参数文件，控制文件。恢复数据库到备份状态
RMAN> delete backup;
RMAN> backup database;
RMAN> backup spfile;
RMAN> shutdown abort;
Oracle instance shut down
[oracle@huang11 ~]$ rm /sof/oracle/oradata/orcl/* -rf
[oracle@huang11 ~]$ rm /sof/oracle/admin/orcl -rf
[oracle@huang11 ~]$ rm /sof/oracle/10g/dbs/*orcl* -rf
[oracle@huang11 ~]$ rm /sof/oracle/10g/dbs/*ORCL* -rf

RMAN> startup nomount;

startup failed: ORA-01078: failure in processing system parameters
LRM-00109: could not open parameter file '/sof/oracle/10g/dbs/initorcl.ora'
下面是恢复spfile文件。
RMAN> restore spfile from '/sof/oracle/flash_recovery_area/ORCL/backupset/2010_01_19/o1_mf_nnsnf_TAG20100119T113309_5ob9zoq0_.bkp';
RMAN> startup force;

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of startup command at 01/19/2010 11:36:50
RMAN-04014: startup failed: ORA-09925: Unable to create audit trail file
Linux Error: 2: No such file or directory
Additional information: 9925

[oracle@huang11 ~]$ mkdir /sof/oracle/admin/orcl/{a,b,c,d,u}dump -p

RMAN> startup force;

Oracle instance started
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of startup command at 01/19/2010 11:40:25
ORA-00205: error in identifying control file, check alert log for more info

RMAN> restore controlfile from '/sof/oracle/flash_recovery_area/ORCL/backupset/2010_01_19/o1_mf_ncsnf_TAG20100119T113155_5ob9yth6_.bkp';

Starting restore at 19-JAN-10
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=157 devtype=DISK

channel ORA_DISK_1: restoring control file
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of restore command at 01/19/2010 11:41:13
ORA-19870: error reading backup piece /sof/oracle/flash_recovery_area/ORCL/backupset/2010_01_19/o1_mf_ncsnf_TAG20100119T113155_5ob9yth6_.bkp
ORA-19504: failed to create file "/sof/oracle/oradata/orcl/control01.ctl"
ORA-27040: file create error, unable to create file
Linux Error: 2: No such file or directory
[oracle@huang11 ~]$ mkdir /sof/oracle/oradata/orcl
RMAN> restore controlfile from '/sof/oracle/flash_recovery_area/ORCL/backupset/2010_01_19/o1_mf_ncsnf_TAG20100119T113155_5ob9yth6_.bkp';

Starting restore at 19-JAN-10
using channel ORA_DISK_1

channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output filename=/sof/oracle/oradata/orcl/control01.ctl
output filename=/sof/oracle/oradata/orcl/control02.ctl
output filename=/sof/oracle/oradata/orcl/control03.ctl
Finished restore at 19-JAN-10

RMAN> alter database mount;

database mounted
released channel: ORA_DISK_1

RMAN> restore database;

RMAN> recover database;

Starting recover at 19-JAN-10
using channel ORA_DISK_1

starting media recovery

unable to find archive log
archive log thread=1 sequence=1
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 01/19/2010 11:43:12
RMAN-06054: media recovery requesting unknown log: thread 1 seq 1 lowscn 560763

SQL> alter database open resetlogs;

Database altered.
如果这里还是不能成功的时候我们就要加隐藏参数。
SQL> alter system set "_allow_resetlogs_corruption"=true scope=spfile;
SQL> shutdown abort;
SQL> startup force;
SQL> alter database open resetlogs;s
成功后取消隐藏参数。

SQL> alter system reset "_allow_resetlogs_corruption" scope=spfile sid='*';
System altered.
SQL> shutdown immediate;
SQL> startup

下面我们查看数据是否能正常查询。
SQL> select count(*) from luo.luo;

COUNT(*)
----------
14
数据能正常查询，说明正常。