資料庫開啟歸檔模式
步驟如下：
[oracle@10g admin]$sqlplus / as sysdba
sql>alter user sys identified by sys; 忘記密碼修改密碼，
database altered
sql> conn sys/sys as sysdba
connected.
sql> show user
user is 「sys」
1、檢視資料庫是否開啟歸檔
sql> select name,log_mode from v$database;
name log_mode
orcl noarchivelog
sql> archive log list
database log mode no archive mode
automatic archival disabled
archive destination use_db_recovery_file_dest
oldest online log sequence 29
current log sequence 31
2、#修改系統的日誌儲存方式為歸檔模式：
sql> alter system set log_archive_start=true scope=spfile;
system altered.
sql> archive log list;
database log mode no archive mode
automatic archival disabled
archive destination use_db_recovery_file_dest
oldest online log sequence 29
current log sequence 31
關閉資料庫；
sql> shutdown immediate;
database closed.
database dismounted.
oracle instance shut down.
3、oracle資料庫開啟歸檔，需要在mount模式下。
sql> startup mount;
ora-32004: obsolete and/or deprecated parameter(s) specified
oracle instance started.
total system global area 599785472 bytes
fixed size 2022600 bytes
variable size 260047672 bytes
database buffers 331350016 bytes
redo buffers 6365184 bytes
database mounted.
4、使資料庫置於歸檔模式。
sql> alter database archivelog;
database altered.
sql> archve log list;
sp2-0734: unknown command beginning 「archve log…」 - rest of line ignored.
sql> archive log list;
database log mode archive mode
automatic archival enabled
archive destination use_db_recovery_file_dest
oldest online log sequence 29
next log sequence to archive 31
current log sequence 31
開啟資料庫
sql> alter database open;
database altered.
sql> select instance_name,status from v$instance;
instance_name status
orcl open
關閉資料庫的歸檔：
sql> shutdown immediate;
sdatabase closed.
database dismounted.
oracle instance shut down.
sql> startup mount;
ora-32004: obsolete and/or deprecated parameter(s) specified
oracle instance started.
total system global area 599785472 bytes
fixed size 2022600 bytes
variable size 260047672 bytes
database buffers 331350016 bytes
redo buffers 6365184 bytes
database mounted.
sql> archive log list;
database log mode archive mode
automatic archival enabled
archive destination use_db_recovery_file_dest
oldest online log sequence 29
next log sequence to archive 31
current log sequence 31
sql> alter database noarchivelog;
database altered.
sql> archive log list;
database log mode no archive mode
automatic archival disabled
archive destination use_db_recovery_file_dest
oldest online log sequence 29
current log sequence 31
sql> alter database open;
database altered.
sql> select status from v$instance;
open
完畢
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