Question

如何找出Oracle instance中当前打开游标open cursor的总数

Answer 1

如何找出Oracle instance中当前打开游标open cursor的总数
WITH a AS (SELECT VALUE init_open_cursors

FROM v$parameter
WHERE name = 'open_cursors'),
b AS (SELECT MAX (max_cursors) curr_max_cursors
FROM ( SELECT MAX (a.VALUE) max_cursors
FROM v$sesstat a, v$statname b, v$session s
WHERE a.statistic# = b.statistic#
AND s.sid = a.sid
AND b.name = 'opened cursors current'
GROUP BY s.sid))
SELECT ROUND (b.curr_max_cursors / a.init_open_cursors * 100, 2) ratio
FROM a, b;