RAC下归档模式的转化过程

如果在RAC中，几个节点的实例需要同时启动到mount状态，然后再执行修改的操作。

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

SQL> startup mount;
ORACLE instance started.

Total System Global Area  285212672 bytes
Fixed Size                  1218992 bytes
Variable Size             138413648 bytes
Database Buffers          142606336 bytes
Redo Buffers                2973696 bytes
Database mounted.
 

SQL> alter database archivelog;
 
Database altered.

SQL> archive log list;
Database log mode              Archive Mode
Automatic archival             Enabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     3
Next log sequence to archive   4
Current log sequence           4

SQL> show parameter log_archive_start;
 
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
log_archive_start                    boolean     FALSE
SQL>  alter system set log_archive_start=true scope=spfile;
 
System altered.
 
SQL> alter database open;