oracle使用backup as copy方式迁移数据文件

1 基础环境

--确认数据文件路径
set line 200
col name for a75
select file#,name from v$datafile
     FILE# NAME
---------- ---------------------------------------------------------------------------
         1 /u01/app/oracle/oradata/ORCL/system01.dbf
         3 /u01/app/oracle/oradata/ORCL/sysaux01.dbf
         4 /u01/app/oracle/oradata/ORCL/undotbs01.dbf
         5 /u01/app/oracle/oradata/ORCL/test.dbf
         7 /u01/app/oracle/oradata/ORCL/users01.dbf
		 
--目标路径（确认目标路径的所属）
/oradata/ORCL

[root@test ~]# ll /oradata/
total 0
drwxrwxr-x 2 oracle oinstall 6 Jul 25 02:37 ORCL

2 重新起库到mount状态

SQL> shu immediate
SQL> startup mount;

3 backup as copy 方式改路径

rman target /

backup as copy datafile 1 format '/oradata/ORCL/system01.dbf';
backup as copy datafile 3 format '/oradata/ORCL/sysaux01.dbf';
backup as copy datafile 4 format '/oradata/ORCL/undotbs01.dbf';
backup as copy datafile 5 format '/oradata/ORCL/test.dbf';
backup as copy datafile 7 format '/oradata/ORCL/users01.dbf';

switch datafile 1 to copy;
switch datafile 3 to copy;
switch datafile 4 to copy;
switch datafile 5 to copy;
switch datafile 7 to copy;

4 确认文件路径是否是目标路径

SQL> set line 200
SQL> col name for a75
SQL> select file#,name from v$datafile;

     FILE# NAME
---------- ---------------------------------------------------------------------------
         1 /oradata/ORCL/system01.dbf
         3 /oradata/ORCL/sysaux01.dbf
         4 /oradata/ORCL/undotbs01.dbf
         5 /oradata/ORCL/test.dbf
         7 /oradata/ORCL/users01.dbf

[oracle@test ~]$ cd /oradata/ORCL/
[oracle@test ORCL]$ ll
total 3986472
-rw-r----- 1 oracle oinstall  618668032 Jul 25 02:47 sysaux01.dbf
-rw-r----- 1 oracle oinstall  954212352 Jul 25 02:47 system01.dbf
-rw-r----- 1 oracle oinstall 2147491840 Jul 25 02:47 test.dbf
-rw-r----- 1 oracle oinstall  356524032 Jul 25 02:47 undotbs01.dbf
-rw-r----- 1 oracle oinstall    5251072 Jul 25 02:47 users01.dbf

5 起库到open状态

alter database open;
select open_mode,database_role from v$database;

6 检查alert日志，如无报错，则通知业务起应用

7 如果有dg库，请注意修改备库上的convert参数