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分类: 服务器与存储

2008-06-16 19:23:45

1.模拟数据损失
  
  $ sqlplus "/ as sysdba"
  
  SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 5 09:26:04 2005
  
  Copyright (c) 1982, 2004, Oracle. All rights reserved.
  
  Connected to:
  Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production
  With the Partitioning, OLAP and Data Mining options
  
  SYS AS SYSDBA on 05-APR-05 >create table t as select * from dba_objects;
  
  Table created.
  
  SYS AS SYSDBA on 05-APR-05 >alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
  
  Session altered.
  
  记录一下时间(具体的生产环境,可能需要你估计一个恢复时间或者通过Logminer来分析日志得到故障时间)
  
  SYS AS SYSDBA on 2005-04-05 09:26:48 >select sysdate from dual;
  
  SYSDATE
  -------------------
  2005-04-05 09:26:55
  
  SYS AS SYSDBA on 2005-04-05 09:26:55 >select count(*) from t;
  
   COUNT(*)
  ----------
     9478
  
  drop table模拟一次事故(当然也可以选择闪回这张表,本例为了说明不完全恢复)
  
  SYS AS SYSDBA on 2005-04-05 09:27:05 >drop table t;
  
  Table dropped.
  
  SYS AS SYSDBA on 2005-04-05 09:27:19 >exit
  Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production
  With the Partitioning, OLAP and Data Mining options
  
  2.执行恢复
  
  设置环境变量时间,执行until time的不完全恢复。
  
  $ export NLS_DATE_FORMAT="yyyy-mm-dd hh24:mi:ss"
  $ rman target /
  
  Recovery Manager: Release 10.1.0.2.0 - 64bit Production
  
  Copyright (c) 1995, 2004, Oracle. All rights reserved.
  
  connected to target database: EYGLE (DBID=1337390772)
  
  RMAN> run {
  2> set until time '2005-04-05 09:26:55';
  3> restore database;
  4> recover database;
  5> }
  
  executing command: SET until clause
  using target database controlfile instead of recovery catalog
  
  Starting restore at 2005-04-05 09:36:51
  allocated channel: ORA_DISK_1
  channel ORA_DISK_1: sid=160 devtype=DISK
  
  datafile 8 not processed because file is read-only
  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//oradata/eygle/system01.dbf
  restoring datafile 00002 to /opt//oradata/eygle/undotbs01.dbf
  restoring datafile 00003 to /opt//oradata/eygle/sysaux01.dbf
  restoring datafile 00006 to /opt//oradata/eygle/EYGLE/datafile/o1_mf_test_03xv34ny_.dbf
  restoring datafile 00009 to /data1/oradata/systemfile/bigtbs.dbf
  restoring datafile 00010 to /opt//oradata/eygle/dfmbrc.dbf
  channel ORA_DISK_1: restored backup piece 1
  piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_03_31/o1_mf_nnndf_TAG20050331T104240_14prx29n_.bkp tag=TAG20050331T104240
  channel ORA_DISK_1: restore complete
  channel ORA_DISK_1: starting datafile backupset restore
  channel ORA_DISK_1: specifying datafile(s) to restore from backup set
  restoring datafile 00004 to /opt//oradata/eygle/users01.dbf
  restoring datafile 00005 to /data1/oradata/systemfile/eygle01.dbf
  restoring datafile 00007 to /opt//oradata/eygle/EYGLE/datafile/o1_mf_itpub_03xv5g66_.dbf
  channel ORA_DISK_1: restored backup piece 1
  piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_03_31/o1_mf_nnndf_TAG20050331T104240_14ps0d47_.bkp tag=TAG20050331T104240
  channel ORA_DISK_1: restore complete
  channel ORA_DISK_1: starting datafile backupset restore
  channel ORA_DISK_1: specifying datafile(s) to restore from backup set
  restoring datafile 00011 to /opt//oradata/eygle/t2k01.dbf
  channel ORA_DISK_1: restored backup piece 1
  piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_03_31/o1_mf_nnndf_TAG20050331T104240_14ps15qb_.bkp tag=TAG20050331T104240
  channel ORA_DISK_1: restore complete
  Finished restore at 2005-04-05 09:39:17
  
  Starting recover at 2005-04-05 09:39:18
  using channel ORA_DISK_1
  datafile 8 not processed because file is offline
  
  starting media recovery
  
  archive log thread 1 sequence 13 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_13_14psyb93_.arc
  archive log thread 1 sequence 14 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_14_14q810df_.arc
  archive log thread 1 sequence 15 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_15_14qp1w1q_.arc
  archive log thread 1 sequence 16 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_16_14r5606b_.arc
  archive log thread 1 sequence 17 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_17_14r7nf55_.arc
  archive log thread 1 sequence 18 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_18_14rprqyz_.arc
  archive log thread 1 sequence 19 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_19_14s79l9f_.arc
  archive log thread 1 sequence 20 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_20_14sodfhx_.arc
  archive log thread 1 sequence 21 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_21_14t6ysjt_.arc
  archive log thread 1 sequence 22 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_22_14tnzplf_.arc
  archive log thread 1 sequence 23 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_23_14tsobsv_.arc
  archive log thread 1 sequence 24 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_24_14v6l6om_.arc
  archive log thread 1 sequence 25 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_25_14vno1gg_.arc
  archive log thread 1 sequence 26 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_26_14w67fn9_.arc
  archive log thread 1 sequence 27 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_27_14wn8bj3_.arc
  archive log thread 1 sequence 28 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_28_14x2cd0g_.arc
  archive log thread 1 sequence 29 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_29_14xg2xts_.arc
  archive log thread 1 sequence 30 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_30_14xmxog2_.arc
  archive log thread 1 sequence 31 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_31_14y5j2n8_.arc
  archive log thread 1 sequence 32 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_32_14yq2mps_.arc
  archive log thread 1 sequence 33 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_33_14z8o5h9_.arc
  archive log thread 1 sequence 34 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_34_14zxqc55_.arc
  archive log thread 1 sequence 35 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_35_1502kl8x_.arc
  archive log thread 1 sequence 36 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_36_150lvjz1_.arc
  archive log thread 1 sequence 37 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_37_1514g562_.arc
  archive log thread 1 sequence 38 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_38_151sjdq0_.arc
  archive log thread 1 sequence 39 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_39_152gnlv0_.arc
  archive log thread 1 sequence 40 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_40_152pytqn_.arc
  archive log thread 1 sequence 41 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_41_1533pxgd_.arc
  archive log thread 1 sequence 42 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_42_153rs55f_.arc
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_13_14psyb93_.arc thread=1 sequence=13
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_14_14q810df_.arc thread=1 sequence=14
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_15_14qp1w1q_.arc thread=1 sequence=15
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_03_31/o1_mf_1_16_14r5606b_.arc thread=1 sequence=16
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_17_14r7nf55_.arc thread=1 sequence=17
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_18_14rprqyz_.arc thread=1 sequence=18
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_19_14s79l9f_.arc thread=1 sequence=19
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_20_14sodfhx_.arc thread=1 sequence=20
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_21_14t6ysjt_.arc thread=1 sequence=21
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_22_14tnzplf_.arc thread=1 sequence=22
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_01/o1_mf_1_23_14tsobsv_.arc thread=1 sequence=23
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_24_14v6l6om_.arc thread=1 sequence=24
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_25_14vno1gg_.arc thread=1 sequence=25
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_26_14w67fn9_.arc thread=1 sequence=26
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_27_14wn8bj3_.arc thread=1 sequence=27
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_28_14x2cd0g_.arc thread=1 sequence=28
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_02/o1_mf_1_29_14xg2xts_.arc thread=1 sequence=29
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_30_14xmxog2_.arc thread=1 sequence=30
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_31_14y5j2n8_.arc thread=1 sequence=31
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_32_14yq2mps_.arc thread=1 sequence=32
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_33_14z8o5h9_.arc thread=1 sequence=33
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_34_14zxqc55_.arc thread=1 sequence=34
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_03/o1_mf_1_35_1502kl8x_.arc thread=1 sequence=35
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_36_150lvjz1_.arc thread=1 sequence=36
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_37_1514g562_.arc thread=1 sequence=37
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_38_151sjdq0_.arc thread=1 sequence=38
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_39_152gnlv0_.arc thread=1 sequence=39
  archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_04/o1_mf_1_40_152pytqn_.arc thread=1 sequence=40
  media recovery complete
  Finished recover at 2005-04-05 09:50:42
  
  恢复完成,使用RESETLOGS选项打开数据库。
  RMAN> alter database open resetlogs;
  
  database opened
  
  RMAN> exit
  
  Recovery Manager complete.
  
  3.检查数据恢复情况
  
  $ sqlplus '/ as sysdba'
  
  SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 5 09:58:00 2005
  
  Copyright (c) 1982, 2004, Oracle. All rights reserved.
  
  Connected to:
  Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production
  With the Partitioning, OLAP and Data Mining options
  
  SYS AS SYSDBA on 2005-04-05 09:58:00 >archive log list;
  Database log mode       Archive Mode
  Automatic archival       Enabled
  Archive destination      USE_DB_RECOVERY_FILE_DEST
  Oldest online log sequence   1
  Next log sequence to archive  1
  Current log sequence      1
  SYS AS SYSDBA on 2005-04-05 09:58:04 >select count(*) from t;
  
   COUNT(*)
  ----------
     9478
  
  SYS AS SYSDBA on 2005-04-05 09:58:09 >
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