时间:2021-07-01 10:21:17 帮助过:8人阅读
不完全恢复 set until scn scn编号 set until time|timestamp ... 最常用的 set until logseq 不完全恢复示例: SQL conn scott/tiger Connected. SQL select to_char(sysdate,yyyy-mm-dd hh24:mi:ss) from dual; TO_CHAR(SYSDATE,YY ------------------- 201
不完全恢复Table dropped.
删除该表后做不完全恢复才能使该表执行查询,否则不行的噢噢
获取恢复时间点可以采用日志挖掘的方式:SQL> select group#,status from v$log; GROUP# STATUS ---------- ---------------- 1 INACTIVE 2 INACTIVE 3 CURRENT SQL> select member from v$logfile; MEMBER -------------------------------------------------------------------------------- /u01/oracle/oradata/jadl10g/redo03.log /u01/oracle/oradata/jadl10g/redo02.log /u01/oracle/oradata/jadl10g/redo01.log SQL> exec dbms_logmnr.add_logfile('/u01/oracle/oradata/jadl10g/redo03.log'); PL/SQL procedure successfully completed. SQL> execute dbms_logmnr.start_logmnr(options=>dbms_logmnr.dict_from_online_catalog); PL/SQL proc【本文来自鸿网互联 (http://www.68idc.cn)】edure successfully completed. SQL> select scn,to_char(timestamp,'yyyy-mm-dd hh24:mi:ss') time,sql_redo from v$logmnr_contents where table_name='EMP'; SCN TIME ---------- ------------------- SQL_REDO -------------------------------------------------------------------------------- 483041 2014-11-06 18:32:29 drop table emp purge; SQL> exec dbms_logmnr.end_logmnr; PL/SQL procedure successfully completed. [oracle@oracle ~]$ rman target / Recovery Manager: Release 10.2.0.5.0 - Production on Thu Nov 6 19:37:08 2014 Copyright (c) 1982, 2007, Oracle. All rights reserved. connected to target database: JADL10G (DBID=2011530396) RMAN> shutdown immediate using target database control file instead of recovery catalog database closed database dismounted Oracle instance shut down RMAN> startup mount connected to target database (not started) Oracle instance started database mounted Total System Global Area 599785472 bytes Fixed Size 2098112 bytes Variable Size 163580992 bytes Database Buffers 427819008 bytes Redo Buffers 6287360 bytes RMAN> run{ 2> set until time "to_date('2014-11-06 18:32:28','yyyy-mm-dd hh24:mi:ss')"; --- set until scn 122222 3> restore database; 4> recover database; 5> alter database open resetlogs; 6> } executing command: SET until clause Starting restore at 06-NOV-14 allocated channel: ORA_DISK_1 channel ORA_DISK_1: sid=155 devtype=DISK channel ORA_DISK_1: starting datafile backupset restore channel ORA_DISK_1: specifying datafile(s) to restore from backup set restoring datafile 00001 to /u01/oracle/oradata/jadl10g/system01.dbf restoring datafile 00002 to /u01/oracle/oradata/jadl10g/undotbs01.dbf restoring datafile 00003 to /u01/oracle/oradata/jadl10g/sysaux01.dbf restoring datafile 00004 to /u01/oracle/oradata/jadl10g/users01.dbf restoring datafile 00005 to /u01/oracle/oradata/jadl10g/example01.dbf channel ORA_DISK_1: reading from backup piece /u01/oracle/flash_recovery_area/JADL10G/backupset/2014_11_06/o1_mf_nnndf_TAG20141106T160359_b5pbvjts_.bkp channel ORA_DISK_1: restored backup piece 1 piece handle=/u01/oracle/flash_recovery_area/JADL10G/backupset/2014_11_06/o1_mf_nnndf_TAG20141106T160359_b5pbvjts_.bkp tag=TAG20141106T160359 channel ORA_DISK_1: restore complete, elapsed time: 00:00:45 Finished restore at 06-NOV-14 Starting recover at 06-NOV-14 using channel ORA_DISK_1 starting media recovery media recovery complete, elapsed time: 00:00:04 Finished recover at 06-NOV-14 database opened