Today I will talk about one interesting feature on Oracle 12c: Move a datafile online.
You could have many reasons to move a datafile online, for example: to another file system, or to another ASM disk group.
On previous versions if you want to move a datafile or rename, you must to put datafile offline and you need to recover the datafile and bring back online. During this operation it is not possible access the data inside the datafile. Continue reading