Oracle 10g里启动自动归档模式

检查归档模式命令：

SQL> archive log list Database log mode No Archive Mode Automatic archival Disabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 15 Current log sequence 17

设置归档模式：

SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> startup mount ORACLE instance started. Total System Global Area 1258291200 bytes Fixed Size 1219160 bytes Variable Size 318768552 bytes Database Buffers 922746880 bytes Redo Buffers 15556608 bytes Database mounted. SQL> alter database archivelog; Database altered. SQL> alter database open; 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 15 Next log sequence to archive 17 Current log sequence 17

如果需要停止归档模式，使用：alter database noarchivelog 命令。Oracle10g之前，你还需要修改初始化参数使数据库处于自动归档模式。在pfile/spfile中设置如下参数：

log_archive_start = true

重启数据库此参数生效，此时数据库处于自动归档模式。也可以在数据库启动过程中，手工执行：

archive log start

使数据库启用自动归档，但是重启后数据库仍然处于手工归档模式。10g使用db_recovery_file_dest来作为归档日志的存放地。

SQL> show parameter db_recovery NAME TYPE VALUE db_recovery_file_dest string /home/oracle/ora10g/flash_reco very_area/ db_recovery_file_dest_size big integer 20G

可以修改db_recovery_file_dest_size参数的大小

alter system set db_recovery_file_dest_size=21474836480