- 首先查看是否开启闪回:
- SQL> select flashback_on from V$database;
- FLASHBACK_ON
- ------------------
- NO
- 二
- 如果已经开启了闪回,无须执行下面的操作。
- cd /u01
- mkdir flashback(生成闪回目录)
- SQL> alter system set db_recovery_file_dest_size=30G scope=both;
- SQL> alter system set db_recovery_file_dest='/u01/flashback' scope=both;
- SQL> shutdown immediate
- SQL> startup mount
- SQL> alter database archivelog;
- SQL> alter database flashback on;
- SQL> alter database open;
- 三
- 再进行确认:
- SQL> select flashback_on from V$database;
- FLASHBACK_ON
- ------------------
- YES
来源: http://www.bubuko.com/infodetail-2107746.html