Uhh, here's the problem, I'm sort of stuck travelling into the future at a more or less constant rate. I don't know how to stop doing that...

Would traveling to the past in order to put in place a preemptive fix for this outage be wise or dangerous?

Asking for a friend.

Same for database transaction roll back and roll forward actions.

And most enterprises, including banks, use databases.

So by bad luck, you may get a couple of transactions reversed in order of time, such as a $20 debit incorrectly happening before a $10 credit, when your bank balance was only $10 prior to both those transactions. So your balance temporarily goes negative.

Now imagine if all those amounts were ten thousand times higher ...

Define “extreme”?