When the OldestScnAgeInMilliseconds is calculated, it does not account for when the database and Kafka Connect are operating in two different timezones, leading to unusually large, but generally relative spikes in this metric.

See https://debezium.zulipchat.com/#narrow/channel/348250-community-oracle/topic/Understanding.20SCN.20Age.20vs.20Oldest.20SCN/near/496502784