改变 Flash Recovery Area (FRA)到一个新路径的方法。
来源于：
How to change Flash Recovery Area to a new location ? (文档 ID 305651.1)
目标：
本文描述了改变FRA目的地的方法和从老的FRA中move file到新FRA的方法
解决方案：
如果你需要改变你的FRA到新的路径，需要从sqlplus里边改变DB_RECOVERY_FILE_DEST初始化参数：
SQL> ALTER SYSTEM SET DB_RECOVERY_FILE_DEST='+disk1' SCOPE=BOTH SID='*';
当你改变这个参数之后，新的所有的FRA file 将会建立在新的路径下
永久的file(控制文件和在线日志文件)，闪回日志和临时文件可以放在老的FRA区里边。当这些临时文件可以被删除时，数据库将会从老的FRA区里边删除这些临时文件.
为了闪回日志能使用新的‘db_recovery_file_dest‘位置,数据库的闪回选项需要off掉再on
类似如下的方法：
- Shutdown the Database
SQL> shutdown immediate
- Startup mount the Database:
SQL> startup mount;
- Drop the garanteed restore points
SQL> select * from v$restore_point;
drop restore point <name>;
- Toggle the Flashback off:
SQL> alter database flashback off;
- Toggle the Flashback on:
SQL> alter database flashback on;
- Open the Database:
SQL> alter database open;
如果你需要move你的永久文件、临时文件到新的FRA区中，请使用下面的步骤:
1) To move the existing backupsets and archived redo log files,use the following command:
RMAN> BACKUP AS COPY ARCHIVELOG ALL DELETE INPUT;
RMAN> BACKUP DEVICE TYPE DISK BACKUPSET ALL DELETE INPUT;
2) To move the datafile copies. Run the below command for each datafile copy:
RMAN> BACKUP AS COPY DATAFILECOPY <name> DELETE INPUT;
where the <name> is the datafilecopy name in the old recovery area.
3) To move the controlfile from the old Flash Recovery Area to new one.
Change the location in the parameter CONTROL_FILES to the new location
and restart the instance in NOMOUNT.
RMAN> RESTORE CONTROLFILE FROM 'filename_of_old_control_file';
4) To move the online redo logs. Use the commands to add a a log file stored in
the new Flash Recovery Area and drop the logfile in the old Flash Recovery Area
for each redo log group.
SQL> alter database add logfile size 100M; SQL> alter database drop logfile '<name of the old redo log>';
Oracle will clean up transient files remaining in the old Flash Recovery Area
location as they become eligible for deletion.
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