In Oracle, a datafile is a physical file that stores data. Each database has a minimum of two datafiles: the system datafile (which stores the database’s metadata) and the redo log file (which stores a record of all changes made to the database). Additional datafiles can be added to store user data.
There are several ways to check the status of datafiles in Oracle. One way is to use the V$DATAFILE view. This view provides information about all of the datafiles in the database, including their name, size, and status.
