重做日志不能归档,不能切换日志的问题。
大家好:
我的日志组group 3的日志文件损坏后,执行了 alter database clear unarchived logfile group 3;
之后,执行多次alter system archive log current;,当需要切换到group 3时,就提示 group 3之前的日志序列号25不能归档,但当时日志序列号是27,
但想执行删除group 3,再重建时 alter database drop logfile group 3;又提示group 3需要归档。
执行 archive log list显示当时日志序列号是27,下一个要归档的日志序列号却是25,正常来说,下一个归档序列号应该也是27的。
麻烦各位大侠帮忙看看要怎么处理,怎么才能归档恢复好group 3?
情况如下:
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARCHIVED STATUS FIRST_CHANGE# FIRST_TIME
------------------ ------------------ ------------------ ------------------ ------------------ --------- ------------------------------------------------ ------------------ ------------------
1 1 26 52428800 2 NO INACTIVE 1645366 24-JAN-13
2 1 27 52428800 2 NO CURRENT 1645387 24-JAN-13
3 1 25 52428800 2 NO INACTIVE 1645325 24-JAN-13
SQL> alter system archive log current;
alter system archive log current
*
ERROR at line 1:
ORA-16038: log 3 sequence# 25 cannot be archived
ORA-00312: online log 3 thread 1: '/ora01/oracle/oradata/demo/redo03.log'
ORA-00312: online log 3 thread 1: '/ora01/oracle/oradata/demo/redo03_2.log'
SQL> select * from v$log;
GROUP# THREAD# SEQUENCE# BYTES MEMBERS ARCHIVED STATUS FIRST_CHANGE# FIRST_TIME
------------------ ------------------ ------------------ ------------------ ------------------ --------- ------------------------------------------------ ------------------ ------------------
1 1 26 52428800 2 NO INACTIVE 1645366 24-JAN-13
2 1 27 52428800 2 NO CURRENT 1645387 24-JAN-13
3 1 25 52428800 2 NO INACTIVE 1645325 24-JAN-13
SQL> alter database drop logfile group 3;
alter database drop logfile group 3
*
ERROR at line 1:
ORA-00350: log 3 of instance demo (thread 1) needs to be archived
ORA-00312: online log 3 thread 1: '/ora01/oracle/oradata/demo/redo03.log'
ORA-00312: online log 3 thread 1: '/ora01/oracle/oradata/demo/redo03_2.log'
SQL> archive log list;
Database log mode Archive Mode
Automatic archival Enabled
Archive destination /ora01/oracle/oradata/demo/archivelog
Oldest online log sequence 25
Next log sequence to archive 25
Current log sequence 27
[解决办法]
看一下是不是FLASH_RECOVERY_AREA满了
[解决办法]
看下alert日志是不是归档满了,不是当前redo损坏,问题应该不大
[解决办法]
我的日志组group 3的日志文件损坏后,执行了 alter database clear unarchived logfile group 3;
之后,执行多次alter system archive log current;
什么错误?怎么会执行alter system archive log current;这个命令?
切换日志是用switch logfile啊
日志操作命令详细查看文章:http://blog.csdn.net/java3344520/article/details/7196433