Can I Reset My Results or Clear My History?
No. There is nothing in your account that resets a score or clears your history, and no single attempt can be picked out and deleted — a sitting, once recorded, is not something you can take back out. What empties the list instead is the retention running out on each attempt, which happens on its own.
Look through your account settings for a reset or clear-all and you will come up empty; the list holds firm until its own retention lets go, so the useful thing is to mark out where the boundary actually falls.
What You Can and Cannot Do with an Oracle Attempt
What you can do is open any finished sitting and read it again, as often as you like, for its score and its full review — and that is the whole of it. You cannot edit a score, pull a single sitting out of the list, or hide one from view, and there is no reset tucked into your account settings. A first SQL mini on which an aggregate slipped into the SELECT without a GROUP BY — the ORA-00979 you now catch on sight — is logged exactly as you sat it, low score and all, and it cannot be scrubbed to lift the way the list reads.
Why the List Only Changes on Its Own
Because nothing you do removes an attempt, the list moves for a single reason: each sitting eventually runs its retention out and is cleared for you, on the automatic schedule the attempt-history page describes. Until an attempt reaches that point it stays exactly where it is; once it does, it is gone, with nothing required from you and no warning given. There is no quicker route, and none was ever built in — the list settles itself in time rather than on your say-so.
So DBExam keeps no reset switch and no clear-all, and no attempt of yours is editable or removable: your Oracle sittings stand as you took them and leave the list only when their retention lapses — cleared for you, never by you.
