The author of the blog says
SYS@DBTEST>startup mount SYS@DBTEST>switch database to copy; SYS@DBTEST>Recovery the database; SYS@DBTEST>Alter database open;
But I can't place RMAN image copies in ASM Diskgroups. Can I ?Huh ? Where did you hear that ? An ASM DiskGroup is frequently used as an FRA (Flash/Fast Recovery Area) defined via DB_RECOVER_FILE_DEST. Just as you can place BackupSets in ASM, so can you place Image Copies in ASM.