All 3 Uses

oblivion
in
A Tale of Two Cities
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for instance, the privilege of filling up blank forms for the consignment of any one to the oblivion of a prison for any length of time;†
Chpt 1.4

oblivion = a state of being completely gone from memory, existence, or awareness
But, Mr. Darnay, oblivion is not so easy to me, as you represent it to be to you.†
Chpt 2.20 *
Another pause of oblivion, and he awoke in the sombre morning, unconscious where he was or what had happened, until it flashed upon his mind, "this is the day of my death!"†
Chpt 3.13

Definitions:

(1) (oblivion)
state of complete loss—being totally forgotten, wiped out, or lost to awareness of what is going on
(2) (meaning too rare to warrant focus)