Oracle 重做日志恢复（二）

2、非当前日志组所有成员丢失（数据库打不开，只丢失单个就没影响，全丢失了就打不开到open状态）解决方法：alter database clear logfile group 2 清理该组的所有成员日志即可（清理一下该日志组的文件信息，因为日志组的状态时inactive，所有的脏块已经写入数据库，这样在启动时就不会进行校验了，此时数据库可以正常启动，当使用到该日志组的时候会自动创建日志组成员）05:19:42 SQL> select * from v$log;GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------1 1 12 10485760 2 NO CURRENT 386507 02-AUG-113 1 11 10485760 2 NO INACTIVE 386505 02-AUG-112 1 10 10485760 2 NO INACTIVE 385481 02-AUG-1105:19:45 SQL>05:19:45 SQL> shutdownORA-01109: database not openDatabase dismounted.ORACLE instance shut down.05:19:59 SQL> ![oracle@oracle ~]$ rm /disk2/lx02/oradata/redo02a.log[oracle@oracle ~]$ rm /disk1/lx02/oradata/redo02b.log[oracle@oracle ~]$ !sqlsqlplus '/as sysdba'SQL*Plus: Release 10.2.0.1.0 - Production on Tue Aug 2 05:20:21 2011Copyright (c) 1982, 2005, Oracle. All rights reserved.Connected to an idle instance.05:20:22 SQL> startupORACLE instance started.Total System Global Area 251658240 bytesFixed Size 1218820 bytesVariable Size 125830908 bytesDatabase Buffers 121634816 bytesRedo Buffers 2973696 bytesDatabase mounted.ORA-00313: open failed for members of log group 2 of thread 1ORA-00312: online log 2 thread 1: '/disk2/lx02/oradata/redo02a.log'ORA-00312: online log 2 thread 1: '/disk1/lx02/oradata/redo02b.log'05:20:29 SQL> alter database clear logfile group 2;清理组所有的日志文件，当使用该日志组文件时会自动创建日志组成员Database altered.05:21:00 SQL> alter database open;Database altered.

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