The events_transactions_history_long table has the same columns as events_transactions_current. See Section 29.12.7.1, “The events_transactions_current Table”. Unlike events_transactions_current, events_transactions_history_long has no indexing. ...
The events_transactions_history_long table contains the N most recent transaction events that have ended globally, across all threads. Transaction events are not added to the table until they have ended. When the table becomes full, the oldest row is discarded when a new row is added, regardle...