redo日志损坏恢复总结(二)
96925952 Oct 27 17:39 system01.dbf
-rw-r-----. 1 oracle oinstall 44048384 Oct 27 16:18 temp01.dbf
-rw-r-----. 1 oracle oinstall 524296192 Oct 27 17:39 undotbs02.dbf
-rw-r-----. 1 oracle oinstall 5251072 Oct 27 17:39 users01.dbf
SQL>
第一：非正在使用的日志文件损坏
1、归档模式，不是当前正在日志损坏，数据库关闭模式。
演示过程：
SQL> set linesize 200
SQL> select * from v$log;
select * from v$log
*
ERROR at line 1:
ORA-01034: ORACLE not available
Process ID: 0
Session ID: 0 Serial number: 0
SQL> startup mount;
ORACLE instance started.
Total System Global Area 492707840 bytes
Fixed Size 2254544 bytes
Variable Size 322963760 bytes
Database Buffers 163577856 bytes
Redo Buffers 3911680 bytes
Database mounted.
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 3489
Session ID: 1 Serial number: 5
日志提示：
Errors in file /opt/app/oracle/diag/rdbms/rhys/RHYS/trace/RHYS_ora_3489.trc:
ORA-00313: open failed for members of log group 1 of thread
ORA-00312: online log 2 thread 1: '/opt/app/oracle/oradata/RHYS/redo02.log'
Sun Oct 27 17:45:25 2013
ARC1 started with pid=21, OS id=3493
USER (ospid: 3489): terminating the instance due to error 313
Sun Oct 27 17:45:25 2013
System state dump requested by (instance=1, osid=3489), summary=[abnormal instance termination].
System State dumped to trace file /opt/app/oracle/diag/rdbms/rhys/RHYS/trace/RHYS_diag_3458_20131027174525.trc
Dumping diagnostic data in directory=[cdmp_20131027174525], requested by (instance=1, osid=3489), summary=[abnormal instance termination].
Instance terminated by USER, pid = 3489
解决办法：
在数据库启动的时候清除日志，然后open数据库：
SQL> startup mount;
ORACLE instance started.
Total System Global Area 492707840 bytes
Fixed Size 2254544 bytes
Variable Size 322963760 bytes
Database Buffers 163577856 bytes
Redo Buffers 3911680 bytes
Database mounted.
SQL> alter database clear logfile group 2;
alter database clear logfile group 2
*
ERROR at line 1:
ORA-00350: log 2 of instance RHYS (thread 1) needs to be archived
ORA-00312: online log 2 thread 1: '/opt/app/oracle/oradata/RHYS/redo02.log'
SQL> alter database clear unarchived logfile group 2;
Database altered.
SQL> alter database open;
Database altered.
SQL>
3、数据库打开模式，非归档模式，非当前日志损坏
模拟过程：
SQL> archive log list;
Database log mode No Archive Mode
Automatic archival Disabled
Archive destination USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence 402
Current log sequence 405
SQL> !rm redo02.log
SQL> !ls -l
total 3647744
-rw-r-----. 1 oracle oinstall 9977856 Oct 27 17:54 control01.ctl
-rw-r-----. 1 oracle oinstall 362422272 Oct 27 17:54 example01.dbf
-rw-r-----. 1 oracle oinstall 62922752 Oct 27 17:54 index_tablespace.dbf
-rw-r-----. 1 oracle oinstall 52429312 Oct 27 17:54 redo01.log
-rw-r-----. 1 oracle oinstall 52429312 Oct 27 17:54 redo03.log
-rw-r-----. 1 oracle oinstall 52429312 Oct 27 17:54 redo04.log
-rw-r-----. 1 oracle oinstall 52429312 Oct 25 16:45 redo4_1.log
-rw-r-----. 1 oracle oinstall 524296192 Oct 27 17:54 Rhys_Amy.dbf
-rw-r-----. 1 oracle oinstall 524296192 Oct 27 17:54 statspack.dbf
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