ORACLE归档和闪回开关

一、归档的开关

1、查看归档是否开启：

    SQL> archive log list;

2、设置归档路径

    SQL> alter system set log_archive_dest_1=’location=d:\arch3′;

3、开归档

    SQL> shutdown immediate; –关闭数据库

    SQL> startup mount; –启动到mount状态

    SQL> alter database archivelog; –开归档

    SQL> alter database open;  –打开数据库

4、关闭数据库归档

    SQL> shutdown immediate;

    SQL> startup mount;

    SQL> alter database noarchivelog;

    SQL> alter database open;

二、闪回区的开关

1、查看是否开启闪回区

    SQL> select flashback_on from v$database;

2、设置闪回恢复区的大小

    SQL> alter system set db_recovery_file_dest_size=30G scope=both;

3、设置闪回恢复区路径

    SQL> alter system set db_recovery_file_dest=’/u01/flashback’ scope=both;

4、开启闪回

    SQL> shutdown immediate;

    SQL> startup mount;

    SQL> alter database flashback on; –开启闪回

    SQL> alter database open;

5、关闭闪回

    SQL> alter database flashback off;