ORA-00265:修改oracle归档模式错误分析

今天打开数据库，想修改oracle的归档模式结果出现以下错误：

 

SQL> alter database archivelog;
alter database archivelog


*
ERROR at line 1:
ORA-00265: instance recovery required, cannot set ARCHIVELOG mode

上网查了下，原来是上次系统的非正常关闭导致。需要重新打开数据库，使数据文件，控制文件，日志文件同步，再修改归档模式。

SQL> alter database open;

Database altered.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

Total System Global Area  301305856 bytes
Fixed Size                  1336148 bytes
Variable Size             167775404 bytes
Database Buffers          125829120 bytes
Redo Buffers                6365184 bytes
Database mounted.
SQL> alter database archivelog;

Database altered.

SQL> alter database open;

Database altered.

重新查看数据库归档模式：

SQL> archive log list
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     6
Next log sequence to archive   8
Current log sequence           8

OK！