If "alter table .. shrink space" is cancelled, has this command done anything, or it resets everythi

Hi

Oracle 12.1.0.2.0

When doing the following (and the table is quite big, lets say it takes 3 hours to complete), and at some point, lets say when 1 hour has passed, I have to cancel this operation, does this mean, that when I execute the same command again, will it start from scratch..?

(meaning will the same command take 3hours or 2hours to finish at that point)

"ALTER TABLE ... SHRINK SPACE (CASCADE);"

Regards

Raul