今天做了一个关于破坏online日志的恢复测试，主要三个场景：
测试1：正常关闭数据库后删除非当前日志
测试2：正常关库后，删除在线日志文件
测试3：非正常关闭数据库，并删除当前在线日志文件
我的测试环境是
Oracle 10.2.0.1 32bit的数据库，OS版本为red hat 5.3，下面看具体测试经过：
测试1：正常关闭数据库后删除非当前日志
[oracle@ora10g ~]$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0 - Production on 星期三 6月 24 10:34:53 2015
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options
SYS@ora10g> select group#,thread#,status,archived from v$log;
GROUP# THREAD# STATUS ARC ---------- ---------- ---------------- --- 1 1 CURRENT NO 2 1 INACTIVE YES 3 1 ACTIVE YES
SYS@ora10g> set line 130 pages 130 SYS@ora10g> col member for a50 SYS@ora10g> select * from v$logfile;
GROUP# STATUS TYPE MEMBER IS_ ---------- ------- ------- -------------------------------------------------- --- 3 ONLINE /u01/app/oracle/oradata/ora10g/redo03.log NO 2 ONLINE /u01/app/oracle/oradata/ora10g/redo02.log NO 1 ONLINE /u01/app/oracle/oradata/ora10g/redo01.log NO
SYS@ora10g> conn zlm/zlm Connected. ZLM@ora10g> create table t1 as select * from dba_objects where 1=2;
Table created.
ZLM@ora10g> insert into t1 select * from dba_objects where rownum<11;
10 rows created.
ZLM@ora10g> select count(*) from t1;
COUNT(*) ---------- 10
ZLM@ora10g> commit; （此处不commit也可，因为对在线日志归档的时候会进行commit操作）
Commit complete.
ZLM@ora10g> alter system archive log current;
System altered.
ZLM@ora10g> select group#,thread#,status,archived from v$log;
GROUP# THREAD# STATUS ARC ---------- ---------- ---------------- --- 1 1 ACTIVE YES 2 1 CURRENT NO 3 1 INACTIVE YES
--删除非当前的在线日志文件（ACTIVE的和INACTIVE的） [oracle@ora10g backupsets]$ cd /u01/app/oracle/oradata/ora10g/ [oracle@ora10g ora10g]$ pwd /u01/app/oracle/oradata/ora10g [oracle@ora10g ora10g]$ ls -l total 1461348 -rw-r----- 1 oracle oinstall 7520256 Jun 24 10:40 control01.ctl -rw-r----- 1 oracle oinstall 7520256 Jun 24 10:40 control02.ctl -rw-r----- 1 oracle oinstall 7520256 Jun 24 10:40 control03.ctl -rw-r----- 1 oracle oinstall 104865792 Jun 24 10:38 example01.dbf -rw-r----- 1 oracle oinstall 172032 Nov 29 2014 indx01.dbf -rw-r----- 1 oracle oinstall 52429312 Jun 24 10:39 redo01.log -rw-r----- 1 oracle oinstall 52429312 Jun 24 10:39 redo02.log -rw-r----- 1 oracle oinstall 52429312 Jun 24 10:34 redo03.log -rw-r----- 1 oracle oinstall 283123712 Jun 24 10:38 sysaux01.dbf -rw-r----- 1 oracle oinstall 587210752 Jun 24 10:38 system01.dbf -rw-r----- 1 oracle oinstall 52436992 Jun 23 16:17 temp01.dbf -rw-r----- 1 oracle oinstall 173023232 Jun 24 10:38 undotbs01.dbf -rw-r----- 1 oracle oinstall 41951232 Jun 24 10:38 users01.dbf -rw-r----- 1 oracle oinstall 100671488 Jun 24 10:38 zlm01.dbf [oracle@ora10g ora10g]$ rm -f redo01.log [oracle@ora10g ora10g]$ rm -f redo03.log [oracle@ora10g ora10g]$ ls -l redo* -rw-r----- 1 oracle oinstall 52429312 Jun 24 10:44 redo02.log [oracle@ora10g ora10g]$
测试1：正常关闭数据库后删除非当前日志
--正常关闭数据库并重启 ZLM@ora10g> shutdown immediate ORA-01031: insufficient privileges ZLM@ora10g> conn / as sysdba Connected. SYS@ora10g> shutdown immediate Database closed. Database dismounted. ORACLE instance shut down. SYS@ora10g> startup ORACLE instance started.
Total System Global Area 524288000 bytes Fixed Size 1220384 bytes Variable Size 318767328 bytes Database Buffers 201326592 bytes Redo Buffers 2973696 bytes Database mounted. ORA-00313: open failed for mem |