归档模式下丢失未归档的redolog处理

数据库版本：ora10R2

os：linux

SQL> select * From v$version;

BANNER

----------------------------------------------------------------

Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bi

PL/SQL Release 10.2.0.1.0 - Production

CORE    10.2.0.1.0      Production

TNS for Linux: Version 10.2.0.1.0 - Production

NLSRTL Version 10.2.0.1.0 - Production

 

确认当前日志组状态：

SQL> select * From v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- ---------- ---------- --- ----------------

FIRST_CHANGE# FIRST_TIM

------------- ---------

         1          1         78   52428800          1 NO  INACTIVE

      5609578 21-OCT-13

         4          1         80  104857600          1 NO  INACTIVE

      5609593 21-OCT-13

         3          1         81   52428800          1 NO  CURRENT

      5609595 21-OCT-13

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- ---------- ---------- --- ----------------

FIRST_CHANGE# FIRST_TIM

------------- ---------

         2          1         79   52428800          1 NO  INACTIVE

      5609581 21-OCT-13

 

---手工删除相应的redolog

rm -rf /oracle/oradata/lixora/redo01.log

 

SQL> alter database clear logfile group 1;

alter database clear logfile group 1

*

ERROR at line 1:

ORA-00350: log 1 of instance lixora (thread 1) needs to be archived

ORA-00312: online log 1 thread 1: '/oracle/oradata/lixora/redo01.log'

SQL> alter database clear unarchived logfile group 1;

Database altered.

 

-----打开数据库

SQL> alter database open;

Database altered.

 

-----再次确认redolog状态

SQL> select * From v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- ---------- ---------- --- ----------------

FIRST_CHANGE# FIRST_TIM

------------- ---------

         1          1         82   52428800          1 NO  CURRENT

      5629603 21-OCT-13

         2          1         79   52428800          1 YES INACTIVE

      5609581 21-OCT-13

         3          1         81   52428800          1 YES INACTIVE

      5609595 21-OCT-13

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- ---------- ---------- --- ----------------

FIRST_CHANGE# FIRST_TIM

------------- ---------

         4          1         80  104857600          1 YES INACTIVE

      5609593 21-OCT-13

 

----手工切换几次

SQL> alter system switch logfile;

System altered.

SQL> /

System altered.

SQL> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- ---------- ---------- --- ----------------

FIRST_CHANGE# FIRST_TIM

------------- ---------

         1          1         82   52428800          1 YES ACTIVE

      5629603 21-OCT-13

         2          1         83   52428800          1 YES ACTIVE

      5630462 21-OCT-13

         3          1         81   52428800          1 YES INACTIVE

      5609595 21-OCT-13

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS

---------- ---------- ---------- ---------- ---------- --- ----------------

FIRST_CHANGE# FIRST_TIM

------------- ---------

         4          1         84  104857600          1 NO  CURRENT

      5630464 21-OCT-13