1、  将归档日志路径LOG_ARCHIVE_DEST的值改为空

idle>alter system set log_archive_dest=''；

2、  设置归档日志路径log_archive_dest_1的值

idle>alter system set log_archive_dest_1 ='LOCATION=/software/cold_backup/' scope= both;

System altered.

3、  设置闪回路径

idle>alter system set db_recovery_file_dest='/software/flashback' scope=both;

System altered.

4、  开闪回

idle>alter database flashback on;

Database altered.

idle>select flashback_on from v$database;

FLASHBACK_ON

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YES

开闪回归档

idle>create flashback archive fba1 tablespace example quota 500m retention 1 year;

Flashback archive created.