一、案例说明

利用rman备份数据库后，因为人工误删除表空间，现在需要使用非完全恢复来找回被误删除的表空间

二、环境准备

[oracle@ECP-UC-DB1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.4.0 - Production on Mon Nov 14 12:35:14 2011

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select name from v$tablespace;

NAME

------------------------------

SYSTEM

UNDOTBS1

SYSAUX

USERS

XFF

ODU

TEMP

7 rows selected.

SQL> select name from v$datafile;

NAME

---------------------------------------------------------------

/opt/oracle/oradata/test/system01.dbf

/opt/oracle/oradata/test/undotbs01.dbf

/opt/oracle/oradata/test/sysaux01.dbf

/opt/oracle/oradata/test/users01.dbf

/opt/oracle/oradata/test/user32g.dbf

/opt/oracle/oradata/test/xifenfei01.dbf

/opt/oracle/oradata/test/user02.dbf

/opt/oracle/oradata/test/odu02.dbf

/opt/oracle/oradata/test/odu01.dbf

/opt/oracle/oradata/test/odu03.dbf

/opt/oracle/oradata/test/xifenfei02.dbf

11 rows selected.

SQL> create tablespace xifenfei datafile

2   '/opt/oracle/oradata/test/t_xifenfei01.dbf' size 10m ;

Tablespace created.

SQL> create table chf.t_xifenfei tablespace xifenfei

2  as

3  select * from dba_objects;

Table created.

SQL> select count(*) from chf.t_xifenfei;

COUNT(*)

----------

50476

SQL> exit

Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

[oracle@ECP-UC-DB1 ~]$ $ORACLE_HOME/bin/rman target /

Recovery Manager: Release 10.2.0.4.0 - Production on Mon Nov 14 12:43:35 2011

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

connected to target database: TEST (DBID=2056006906)

RMAN> list backup summary;

using target database control file instead of recovery catalog

RMAN> backup database format '/tmp/test_full_%U';

Starting backup at 2011-11-14 12:44:32

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=134 devtype=DISK

channel ORA_DISK_1: starting full datafile backupset

channel ORA_DISK_1: specifying datafile(s) in backupset

input datafile fno=00008 name=/opt/oracle/oradata/test/odu02.dbf

input datafile fno=00002 name=/opt/oracle/oradata/test/undotbs01.dbf

input datafile fno=00001 name=/opt/oracle/oradata/test/system01.dbf

input datafile fno=00003 name=/opt/oracle/oradata/test/sysaux01.dbf

input datafile fno=00009 name=/opt/oracle/oradata/test/odu01.dbf

input datafile fno=00006 name=/opt/oracle/oradata/test/xifenfei01.dbf

input datafile fno=00005 name=/opt/oracle/oradata/test/user32g.dbf

input datafile fno=00007 name=/opt/oracle/oradata/test/user02.dbf

input datafile fno=00010 name=/opt/oracle/oradata/test/odu03.dbf

input datafile fno=00011 name=/opt/oracle/oradata/test/xifenfei02.dbf

input datafile fno=00012 name=/opt/oracle/oradata/test/t_xifenfei01.dbf

input datafile fno=00004 name=/opt/oracle/oradata/test/users01.dbf

channel ORA_DISK_1: starting piece 1 at 2011-11-14 12:44:33

channel ORA_DISK_1: finished piece 1 at 2011-11-14 12:48:59

piece handle=/tmp/test_full_01mrkqdh_1_1 tag=TAG20111114T124433 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:04:26

channel ORA_DISK_1: starting full 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 1 at 2011-11-14 12:49:02

channel ORA_DISK_1: finished piece 1 at 2011-11-14 12:49:03

piece handle=/tmp/test_full_02mrkqlr_1_1 tag=TAG20111114T124433 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:04

Finished backup at 2011-11-14 12:49:03

RMAN> exit

Recovery Manager complete.

[oracle@ECP-UC-DB1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.4.0 - Production on Mon Nov 14 12:50:53 2011

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> drop tablespace xifenfei including contents and datafiles;

Tablespace dropped.

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> exit

Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

[oracle@ECP-UC-DB1 ~] cd /opt/oradata

[oracle@ECP-UC-DB1 oradata]$ mv test test_bak

[oracle@ECP-UC-DB1 oradata]$ mkdir test

[oracle@ECP-UC-DB1 oradata]$ ll

total 16

drwxr-x--- 3 oracle oinstall 4096 Aug 12 21:50 ecp

drwxr-x--- 3 oracle oinstall 4096 Jun 25 14:23 ecp_bak

drwxr-xr-x 2 oracle oinstall 4096 Nov 14 12:53 test

drwxr-x--- 3 oracle oinstall 4096 Nov 14 12:51 test_bak

通过alert日志，查找出删除表空间xifenfei的时间:Mon Nov 14 12:49:102011

三、恢复测试

[oracle@ECP-UC-DB1 oradata]$ $ORACLE_HOME/bin/rman target /

Recovery Manager: Release 10.2.0.4.0 - Production on Mon Nov 14 12:58:47 2011

Copyright (c) 1982, 2007, Oracle.  All rights reserved.

connected to target database (not started)

RMAN> startup

Oracle instance started

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of startup command at 11/14/2011 12:58:56

ORA-00205: error in identifying control file, check alert log for more info

RMAN> restore controlfile from '/tmp/test_full_02mrkqlr_1_1';

Starting restore at 2011-11-14 12:59:15

using target database control file instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=156 devtype=DISK

channel ORA_DISK_1: restoring control file

channel ORA_DISK_1: restore complete, elapsed time: 00:00:03

output filename=/opt/oracle/oradata/test/control01.ctl

output filename=/opt/oracle/oradata/test/control02.ctl

output filename=/opt/oracle/oradata/test/control03.ctl

Finished restore at 2011-11-14 12:59:19

RMAN> restore database;

Starting restore at 2011-11-14 13:00:16

using channel ORA_DISK_1

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of restore command at 11/14/2011 13:00:16

ORA-01507: database not mounted

RMAN> alter database mount;

database mounted

released channel: ORA_DISK_1

RMAN> restore database;

Starting restore at 2011-11-14 13:00:32

Starting implicit crosscheck backup at 2011-11-14 13:00:32

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=156 devtype=DISK

Crosschecked 1 objects

Finished implicit crosscheck backup at 2011-11-14 13:00:33

Starting implicit crosscheck copy at 2011-11-14 13:00:33

using channel ORA_DISK_1

Finished implicit crosscheck copy at 2011-11-14 13:00:33

searching for all files in the recovery area

cataloging files...

no files cataloged

using channel ORA_DISK_1

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00001 to /opt/oracle/oradata/test/system01.dbf

restoring datafile 00002 to /opt/oracle/oradata/test/undotbs01.dbf

restoring datafile 00003 to /opt/oracle/oradata/test/sysaux01.dbf

restoring datafile 00004 to /opt/oracle/oradata/test/users01.dbf

restoring datafile 00005 to /opt/oracle/oradata/test/user32g.dbf

restoring datafile 00006 to /opt/oracle/oradata/test/xifenfei01.dbf

restoring datafile 00007 to /opt/oracle/oradata/test/user02.dbf

restoring datafile 00008 to /opt/oracle/oradata/test/odu02.dbf

restoring datafile 00009 to /opt/oracle/oradata/test/odu01.dbf

restoring datafile 00010 to /opt/oracle/oradata/test/odu03.dbf

restoring datafile 00011 to /opt/oracle/oradata/test/xifenfei02.dbf

restoring datafile 00012 to /opt/oracle/oradata/test/t_xifenfei01.dbf

channel ORA_DISK_1: reading from backup piece /tmp/test_full_01mrkqdh_1_1

channel ORA_DISK_1: restored backup piece 1

piece handle=/tmp/test_full_01mrkqdh_1_1 tag=TAG20111114T124433

channel ORA_DISK_1: restore complete, elapsed time: 00:07:08

Finished restore at 2011-11-14 13:07:42

RMAN> run

2> {

3> sql 'alter session set nls_date_format ="yyyy-mm-dd hh24:mi:ss"';

4> set until time='2011-11-14 12:49:10';

5> recover database;

6> }

sql statement: alter session set nls_date_format ="yyyy-mm-dd hh24:mi:ss"

executing command: SET until clause

Starting recover at 2011-11-14 13:18:09

using channel ORA_DISK_1

starting media recovery

unable to find archive log

archive log thread=1 sequence=248

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03002: failure of recover command at 11/14/2011 13:18:10

RMAN-06054: media recovery requesting unknown log: thread 1 seq 248 lowscn 11517136

--另外打开一个会话查询当前最大的归档日志seq#情况

[oracle@ECP-UC-DB1 archivelog]$ ll -thr|tail -10

-rw-r----- 1 oracle oinstall  45M Nov  5 19:00 1_238_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov  7 10:00 1_239_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov  8 02:25 1_240_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov  8 22:25 1_241_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov  9 22:26 1_242_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov 10 22:01 1_243_757860476.dbf

-rw-r----- 1 oracle oinstall  46M Nov 11 22:01 1_244_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov 12 00:00 1_245_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov 13 07:26 1_246_757860476.dbf

-rw-r----- 1 oracle oinstall  45M Nov 14 07:27 1_247_757860476.dbf

--证明最大的seq为247，而恢复需要日志的seq为248，就是说需要应用未归档的redo log

--那么我们采用在sqlplus中恢复

RMAN> exit

Recovery Manager complete.

[oracle@ECP-UC-DB1 oradata]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.4.0 - Production on Mon Nov 14 13:21:24 2011

Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.

Connected to:

Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> alter session set nls_date_format ="yyyy-mm-dd hh24:mi:ss"

2  ;

Session altered.

SQL>  recover database until time '2011-11-14 12:49:10' using backup controlfile;

ORA-00279: change 11517136 generated at 11/14/2011 12:44:33 needed for thread 1

ORA-00289: suggestion : /opt/oracle/oradata/test/archivelog1_248_757860476.dbf

ORA-00280: change 11517136 for thread 1 is in sequence #248

Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

/opt/oracle/oradata/test_bak/redo01.log

ORA-00310: archived log contains sequence 247; sequence 248 required

ORA-00334: archived log: '/opt/oracle/oradata/test_bak/redo01.log'

SQL> recover database until time '2011-11-14 12:49:10' using backup controlfile;

ORA-00279: change 11517136 generated at 11/14/2011 12:44:33 needed for thread 1

ORA-00289: suggestion : /opt/oracle/oradata/test/archivelog1_248_757860476.dbf

ORA-00280: change 11517136 for thread 1 is in sequence #248

Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

/opt/oracle/oradata/test_bak/redo02.log

Log applied.

Media recovery complete.

SQL> alter database open resetlogs;

Database altered.

SQL> select name from v$tablespace;

NAME

------------------------------

SYSTEM

UNDOTBS1

SYSAUX

USERS

XFF

ODU

TEMP

XIFENFEI

8 rows selected.

SQL> select name from v$datafile;

NAME

--------------------------------------------------------------------

/opt/oracle/oradata/test/system01.dbf

/opt/oracle/oradata/test/undotbs01.dbf

/opt/oracle/oradata/test/sysaux01.dbf

/opt/oracle/oradata/test/users01.dbf

/opt/oracle/oradata/test/user32g.dbf

/opt/oracle/oradata/test/xifenfei01.dbf

/opt/oracle/oradata/test/user02.dbf

/opt/oracle/oradata/test/odu02.dbf

/opt/oracle/oradata/test/odu01.dbf

/opt/oracle/oradata/test/odu03.dbf

/opt/oracle/oradata/test/xifenfei02.dbf

/opt/oracle/oradata/test/t_xifenfei01.dbf

12 rows selected.

SQL> select count(*) from chf.t_xifenfei;

COUNT(*)

----------

50476

oracle视频教程请关注:http://u.youku.com/user_video/id_UMzAzMjkxMjE2.html

转载于:https://blog.51cto.com/19880614/1266528

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