🎴 Flashcard Mode

V$UNDOSTAT provides statistics on undo tablespace usage including undo blocks written per second. This dynamic performance view contains one row for each 10-minute interval and shows various undo metrics including transaction activity and space consumption. V$TRANSACTION shows active transactions, V$ROLLSTAT shows rollback segment statistics, and DBA_UNDO_EXTENTS shows undo extent information but not the per-second write rate.