select
  inst_id,                                 -- INST_ID NUMBER
  txns_enqueued_knstrqu,                   -- TXNS_ENQUEUED NUMBER
  calls_enqueued_knstrqu,                  -- CALLS_ENQUEUED NUMBER
  txns_purged_knstrqu,                     -- TXNS_PURGED NUMBER
  last_enqueue_time_knstrqu,               -- LAST_ENQUEUE_TIME DATE
  last_purge_time_knstrqu                  -- LAST_PURGE_TIME DATE
from
  x$knstrqu