案例2：
--部分数据文件丢失，恢复数据文件（mount 或 open）
1）测试环境
07:30:40 SQL> create table test (id int) tablespace test;
Table created.
07:30:52 SQL> conn /as sysdba
Connected.
07:30:57 SQL>
07:30:57 SQL> insert into scott.test values (1);
1 row created.
07:31:02 SQL> commit;
Commit complete.
07:31:04 SQL> alter system archive log current;
System altered.
07:31:10 SQL> insert into scott.test values (2);
1 row created.
07:31:13 SQL> commit;
Commit complete.
07:31:15 SQL> alter system archive log current;
System altered.
07:31:16 SQL> insert into scott.test values (3);
1 row created.
07:31:19 SQL> commit;
Commit complete.
07:31:20 SQL> alter system archive log current;
System altered.
07:31:24 SQL> insert into scott.test values (4);
1 row created.
07:31:26 SQL> insert into scott.test values (5);
1 row created.
07:31:28 SQL> commit;
Commit complete.
07:31:30 SQL> select * from scott.test;
ID
----------
1
2
3
4
5
07:31:34 SQL>
07:31:34 SQL> shutdown abort
ORACLE instance shut down.
07:33:23 SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
[oracle@work ~]$ rm /u01/app/oracle/oradata/prod/test0*.dbf
2）启动database
07:34:07 SQL> startup
ORACLE instance started.
Total System Global Area 314572800 bytes
Fixed Size 1219184 bytes
Variable Size 79693200 bytes
Database Buffers 230686720 bytes
Redo Buffers 2973696 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 6 - see DBWR trace file
ORA-01110: data file 6: '/u01/app/oracle/oradata/prod/test01.dbf'
07:34:15 SQL> select file#,error from v$recover_file;
FILE# ERROR
---------- -----------------------------------------------------------------
6 FILE NOT FOUND
8 FILE NOT FOUND
3）利用rman 恢复datafile
RMAN> run {
2> startup force mount;
3> sql 'alter database datafile 6,8 offline';
4> alter database open;
5> restore datafile 6,8;
6> recover datafile 6,8;
7> sql 'alter database datafile 6,8 online';
8> }
Oracle instance started
database mounted
Total System Global Area 314572800 bytes
Fixed Size 1219184 bytes
Variable Size 79693200 bytes
Database Buffers 230686720 bytes
Redo Buffers 2973696 bytes
using target database control file instead of recovery catalog
sql statement: alter database datafile 6,8 offline
database opened
Starting restore at 18-AUG-11
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=146 devtype=DISK
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00006 to /u01/app/oracle/oradata/prod/test01.dbf
restoring datafile 00008 to /u01/app/oracle/oradata/prod/test02.dbf
channel ORA_DISK_1: reading from backup piece /disk1/rman/prod/PROD_31.bak
channel ORA_DISK_1: restored backup piece 1
piece handle=/disk1/rman/prod/PROD_31.bak tag=TAG20110818T071905
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
Finished restore at 18-AUG-11
Starting recover at 18-AUG-11
using channel ORA_DISK_1
starting media recovery
archive log thread 1 sequence 8 is already on disk as file /disk1/arch/prod/arch_8_1_759396736.log
archive log thread 1 sequence 9 is already on disk as file /disk1/arch/prod/arch_9_1_759396736.log
archive log thread 1 sequence 10 is already on disk as file /disk1/arch/prod/arch_10_1_759396736.log
archive log thread 1 sequence 11 is already on disk as file /disk1/arch/prod/arch_11_1_759396736.log
archive log thread 1 sequence 12 is already on disk as file /disk1/arch/prod/arch_12_1_759396736.log
archive log thread 1 sequence 13 is already on disk as file /disk1/arch/prod/arch_13_1_759396736.log
archive log filename=/disk1/arch/prod/arch_8_1_759396736.log thread=1 sequence=8
archive log filename=/disk1/arch/prod/arch_9_1_759396736.log thread=1 sequence=9
archive log filename=/disk1/arch/prod/arch_10_1_759396736.log thread=1 sequence=10
archive log filename=/disk1/arch/prod/arch_11_1_759396736.log thread=1 sequence=11
media recovery complete, elapsed time: 00:00:03
Finished recover at 18-AUG-11
sql statement: alter database datafile 6,8 online
RMAN>
4）验证：
[oracle@work ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on Thu Aug 18 07:37:17 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
07:37:18 SQL>
07:37:18 SQL> select * from scott.test;
ID
----------
1
2
3
4
5
07:37:23 SQL>
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