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使用Rman进行不完全恢复发表日期：2008-2-9
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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/oracle/oradata/eygle/system01.dbf restoring datafile 00002 to /opt/oracle/oradata/eygle/undotbs01.dbf restoring datafile 00003 to /opt/oracle/oradata/eygle/sysaux01.dbf restoring datafile 00006 to /opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_test_03xv34ny_.dbf restoring datafile 00009 to /data1/oradata/systemfile/bigtbs.dbf restoring datafile 00010 to /opt/oracle/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/oracle/oradata/eygle/users01.dbf restoring datafile 00005 to /data1/oradata/systemfile/eygle01.dbf restoring datafile 00007 to /opt/oracle/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/oracle/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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