1. Simulate a disk failure by corrupting the new datafile. On Windows, open
the file with Windows Notepad, delete a few lines from the beginning of the
file, and save it; it is important to use Notepad because it is one of the few
Windows utilities that will ignore the file lock that Oracle places on datafiles.
On Unix you can use any editor you please, such as vi. Make sure that the
characters deleted are at the start of the file, to ensure that the file header is
damaged.
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