oracle：rman恢复----通过时间set until time

试验计划：先做一个0级备份，再创建一个表，插入几条数据，最后删除表，然后通过rman把该表的数据恢复。

试验环境：在归档模式，oracle10.2.0.1

开始试验：

1.rman level 0备份

RMAN> backup incremental level 0 database;

Starting backup at -DEC-
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid= devtype=DISK
channel ORA_DISK_1: starting incremental level  datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno= name=/u01/app/oracle/product/10.2./db_2/oradata/orcl/system01.dbf
input datafile fno= name=/u01/app/oracle/product/10.2./db_2/oradata/orcl/sysaux01.dbf
input datafile fno= name=/u01/app/oracle/product/10.2./db_2/oradata/orcl/undotbs01.dbf
input datafile fno= name=/u01/app/oracle/product/10.2./db_2/oradata/orcl/yn.dbf
input datafile fno= name=/u01/app/oracle/product/10.2./db_2/oradata/orcl/users01.dbf
channel ORA_DISK_1: starting piece  at -DEC-
channel ORA_DISK_1: finished piece  at -DEC-
piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd0_TAG20131202T211658_99s22c7o_.bkp tag=TAG20131202T211658 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: ::
channel ORA_DISK_1: starting incremental level  datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
including current control file in backupset
including current SPFILE in backupset
channel ORA_DISK_1: starting piece  at -DEC-
channel ORA_DISK_1: finished piece  at -DEC-
piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_ncsn0_TAG20131202T211658_99s252by_.bkp tag=TAG20131202T211658 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: ::
Finished backup at -DEC-

2.创建表

SQL> create table t1(id int,name varchar2());

Table created.

SQL> insert into t1 values(,'first');

 row created.

SQL> commit;

SQL> insert into t1 values(,'second');

 row created.

SQL> commit;

Commit complete.

SQL> alter system switch logfile;

System altered.

SQL> select * from t1;

    ID NAME
---------- --------------------
      first
      second

3.查询当前系统时间

SQL> select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;

TO_CHAR(SYSDATE,'YY
-------------------
-- ::

4.删除表，关闭数据库，重启数据库

SQL> drop table t1;

Table dropped.

SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.

Total System Global Area   bytes
Fixed Size             bytes
Variable Size           bytes
Database Buffers       bytes
Redo Buffers             bytes
Database mounted.
SQL> select status from v$instance;

STATUS
------------
MOUNTED

5.rman恢复

RMAN> run{
2> allocate channel c1 type disk;
3> set until time "to_date('2013-12-02 21:41:55','yyyy-mm-dd hh24:mi:ss')";
4> restore database;
5> recover database;
6> sql 'alter database open resetlogs';
> }

allocated channel: c1
channel c1: sid= devtype=DISK

executing command: SET until clause

Starting restore at -DEC-

channel c1: starting datafile backupset restore
channel c1: specifying datafile(s) to restore from backup set
restoring datafile  to /u01/app/oracle/product/10.2./db_2/oradata/orcl/system01.dbf
restoring datafile  to /u01/app/oracle/product/10.2./db_2/oradata/orcl/undotbs01.dbf
restoring datafile  to /u01/app/oracle/product/10.2./db_2/oradata/orcl/sysaux01.dbf
restoring datafile  to /u01/app/oracle/product/10.2./db_2/oradata/orcl/users01.dbf
restoring datafile  to /u01/app/oracle/product/10.2./db_2/oradata/orcl/yn.dbf
channel c1: reading from backup piece /u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd0_TAG20131202T211658_99s22c7o_.bkp
channel c1: restored backup piece
piece handle=/u01/app/oracle/flash_recovery_area/ORCL/backupset/2013_12_02/o1_mf_nnnd0_TAG20131202T211658_99s22c7o_.bkp tag=TAG20131202T211658
channel c1: restore complete, elapsed time: ::
Finished restore at -DEC-

Starting recover at -DEC-

starting media recovery

archive log thread  sequence  is already on disk as file /u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_56_99s2jvny_.arc
archive log thread  sequence  is already on disk as file /u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_57_99s2lpbk_.arc
archive log thread  sequence  is already on disk as file /u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_58_99s3d5ph_.arc
archive log thread  sequence  is already on disk as file /u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_1_99s3j6fg_.arc
archive log filename=/u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_56_99s2jvny_.arc thread= sequence=
archive log filename=/u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_57_99s2lpbk_.arc thread= sequence=
archive log filename=/u01/app/oracle/flash_recovery_area/ORCL/archivelog/2013_12_02/o1_mf_1_58_99s3d5ph_.arc thread= sequence=
media recovery complete, elapsed time: ::
Finished recover at -DEC-

sql statement: alter database open resetlogs
released channel: c1

RMAN>    

6.查询被删除的数据

SQL> select * from t1;

    ID NAME
---------- --------------------
      first
      second

SQL> 

7.重新备份数据库

在生产环境中，不完全恢复后，是要用rman重新备份的。因为该备份是以后数据恢复的一个起点。