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HomeDatabaseMysql Tutorial打开或关闭Oracle数据库的闪回功能步骤

一、打开闪回数据库特性:1、确保数据库处于归档模式,如果为非归档模式,将数据库转换成归档模式SQLgt; archive log list;数据

一、打开闪回数据库特性:
1、确保数据库处于归档模式,如果为非归档模式,将数据库转换成归档模式
SQL> archive log list;
数据库日志模式            存档模式
自动存档            启用
存档终点            /cwarch
最早的联机日志序列    1274
下一个存档日志序列  1276
当前日志序列          1276

2、设置闪回恢复区
设置闪回区大小:
SQL> alter system set db_recovery_file_dest_size=80g scope=spfile;
设置闪回区位置:
SQL> alter system set db_recovery_file_dest='/workdb/account_flashback_area' scope=spfile;
设置闪回目标为5天,以分钟为单位,每天为1440分钟:
SQL> alter system set db_flashback_retention_target=7200 scope=spfile;

3、打开闪回功能
SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database flashback on;
SQL> alter database open;

4、确认数据库闪回特性已经启用
SQL> select flashback_on from v$database;

FLASHBACK_ON
------------------
YES

二、关闭闪回数据库特性:
SQL> shutdown immediate;
SQL> startup mount;
SQL> alter database flashback off;
SQL> alter database open;

Oracle 11g flashback Data Archive(闪回数据归档)

Oracle flashback闪回机制

flashback table快速恢复误删除的数据

Oracle 备份恢复:flashback闪回

[Oracle]闪回flashback功能的使用

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本文永久更新链接地址:

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