Oracle的日志归档模式可以有效的防止instance和disk的故障,在数据库故障恢复中不可或缺,由于oracle初始安装模式为非归档模式,
Oracle的日志归档模式可以有效的防止instance和disk的故障,在数据库故障恢复中不可或缺,由于oracle初始安装模式为非归档模式,因此需要将其设置为归档模式,下面就其方法和步骤做一些总结,虽然简单,但这是管理oracle数据库必备之工,故有如下陈述。
例子是建立在windowsXP和oracle11g的环境下,如有环境不同,仅供参考。
Oracle非归档模式设置为归档模式方法步骤:
1, 运行cmd命令,开启sql*plus
C:\Documents and Settings\Administrator>sqlplus/nolog
2, 以sysdba身份连接数据库
SQL> CONNECT/AS SYSDBA
3,, 若数据库是打开的,首先关闭卸载数据库。
SQL> SHUTDOWN
4, 以mount模式打开数据库。
SQL> STARTUP MOUNT
5, 查询当前归档模式
SQL> ARCHIVE LOG LIST
数据库日志模式 非存档模式
自动存档 禁用
存档终点 USE_DB_RECOVERY_FILE_DEST
最早的联机日志序列 1
当前日志序列 1
6, 更改归档模式为ARCHIVELOG
SQL> ALTER DATABASE ARCHIVELOG;
SQL> ARCHIVE LOG LIST
存档终点 USE_DB_RECOVERY_FILE_DEST
最早的联机日志序列 1
下一个存档日志序列 1
当前日志序列 1
SQL> ALTER DATABASE OPEN;
SQL> select log_mode from v$database;
LOG_MODE
------------
ARCHIVELOG
如果因特殊需要,需要重新设置数据库为非归档模式,可以参照如下方法。
Oracle归档模式设置为非归档模式方法步骤:
1,运行cmd命令,开启sql*plus
C:\Documents and Settings\Administrator>sqlplus/nolog
2以sysdba身份连接数据库
SQL> CONNECT/AS SYSDBA
3, 若数据库是打开的,首先关闭卸载数据库。
SQL> SHUTDOWN
4, 以mount模式打开数据库。
SQL> STARTUP MOUNT
5, 查询当前归档模式
SQL> ARCHIVE LOG LIST
存档终点 USE_DB_RECOVERY_FILE_DEST
最早的联机日志序列 1
下一个存档日志序列 1
当前日志序列 1
6, 更改归档模式为ARCHIVELOG
SQL> ALTER DATABASE NOARCHIVELOG;
SQL> ARCHIVE LOG LIST
数据库日志模式 非存档模式
自动存档 禁用
存档终点 USE_DB_RECOVERY_FILE_DEST
最早的联机日志序列 1
当前日志序列 1
SQL> ALTER DATABASE OPEN;
SQL> select log_mode from v$database;
LOG_MODE
------------
NOARCHIVELOG

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