1. 将有问题的数据文件修改为offline

   SQL> alter system switch logfile;

   System altered.

   SQL> select file_name, file_id from dba_data_files;

   FILE_NAME                          FILE_ID

   -----------------------   -------

   /u01/oracle/oradata/gc_test1.dbf   25

   SQL> alter database datafile 25 offline;

   Database altered.

   SQL> select file_name, file_id, online_status from dba_data_files where file_id=25;

   FILE_NAME FILE_ID ONLINE_STATUS

   ----------  -------

   /u01/oracle/oradata/gc_test1.dbf 25 RECOVER

2. 使用asmcmd命令将文件从本地目录复制到共享磁盘组中

   ASMCMD> cp /u01/oracle/oradata/gc_test1.dbf +DATADG/PROD/DATAFILE/gc_test1.dbf 

   copying /u01/oracle/oradata/gc_test1.dbf -> +DATADG/PROD/DATAFILE/gc_test1.dbf

3. rename每一个完成复制的数据文件

   SQL> alter database rename file '/u01/oracle/oradata/gc_test1.dbf' to '+DATA/PROD/DATAFILE/gc_test1.dbf'; Database altered.
   

4. recover数据文件并将其online

   SQL> alter database recover datafile 25;

   Database altered.

   SQL> alter database datafile 25 online;

   Database altered.

5. 确认修改成功

   SQL> select file_name, file_id, online_status from dba_data_files where file_id=6;

   FILE_NAME FILE_ID ONLINE_STATUS

   ----------------- -----------------

   +DATA/prod/datafile/gc_test1.dbf 25 ONLINE

参考文档：How to Move a Datafile from Filesystem to ASM Using ASMCMD CP Command. (Doc ID 1610615.1)