Oracle Solution for Error ora-01232

ORA-01232: cannot start online backup - file string is being made read-only

What triggered the Error:

An attempt to start an online backup found that one of the files is in transition to read-only mode.

What should we do to fix it:

Wait for the transition to complete and then retry the command, if this is an ALTER DATABASE BEGIN BACKUP command, or take the backup without any begin or end commands, if this is an ALTER TABLESPACE BEGIN BACKUP command.