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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