如何更改控制文件和数据文件的路径

如果是数据文件，

1. shutdown immediate

2.cp 数据文件到指定的目录

3.startup mount

4.alter database rename

如：ALTER DATABASE RENAME FILE '/ora/oracle/data1/test.ora' TO '/ora/oracle/data2/test.ora'

5. open数据库

在Oracle10g中，如果我们使用了闪回区，那么控制文件的自动备份会存储在闪回区中。

有时候为了安全，我们需要将控制文件的自动备份转移到其他目录下，这可以使用如下命令。

RMAN>CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/opt/oracle/obak/control%F'

new RMAN configuration parameters:

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/opt/oracle/obak/control%F'

new RMAN configuration parameters are successfully stored

当然，打开控制文件自动备份需要使用如下命令：

RMAN>CONFIGURE CONTROLFILE AUTOBACKUP ON

new RMAN configuration parameters:

CONFIGURE CONTROLFILE AUTOBACKUP ON

new RMAN configuration parameters are successfully stored

我们建议用户一定要打开这个功能。

现在控制文件的自动备份将指向新的目录：

RMAN>backup datafile 1

Starting backup at 07-JAN-08

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=12 devtype=DISK

channel ORA_DISK_1: starting full datafile backupset

channel ORA_DISK_1: specifying datafile(s) in backupset

input datafile fno=00001 name=/opt/oracle/oradata/eygle/system01.dbf

channel ORA_DISK_1: starting piece 1 at 07-JAN-08

channel ORA_DISK_1: finished piece 1 at 07-JAN-08

piece handle=/opt/oracle/obak/bkup_3fj5jbqp_1_1 comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:36

Finished backup at 07-JAN-08

Starting Control File and SPFILE Autobackup at 07-JAN-08

piece handle=/opt/oracle/obak/controlc-1407686520-20080107-00comment=NONE

Finished Control File and SPFILE Autobackup at 07-JAN-08

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