oracle游標(oracle游標for循環)

概述

今天偷個懶，總結一下Oracle游標數的一些常用sql，下面一起來看看吧~

lect value from v$parameter where name = 'open_cursors';show parameter open_cursors;2、查看當前打開的游標數目

lect count(*) from v$open_cursor;3、查看游標使用情況

lect o.sid, osur, machine,o.sql_id,o.sql_text,o.cursor_type, count(*) num_curs from v$open_cursor o, v$ssion s where ur_name = 'GLOGOWNER' and o.sid = s.sid group by o.sid, osur, machine,o.sql_id,o.sql_text,o.cursor_type order by num_curs desc;4、修改Oracle最大游標數

根據游標占用情況分析訪問數據庫的程序在資源釋放上是否正常,如果程序釋放資源沒有問題，則加大游標數。

alter system t open_cursors=2000 scope=both;5、各用戶的打開游標總數

SELECT A.USER_NAME, COUNT(*) FROM V$OPEN_CURSOR A GROUP BY A.USER_NAME; 6、查找數據庫各用戶各個終端的緩存游標數

SELECT AA.USERNAME, AA.MACHINE, SUM(AA.VALUE) FROM (SELECT A.VALUE, S.MACHINE, S.USERNAME FROM V$SESSTAT A, V$STATNAME B, V$SESSION S WHERE A.STATISTIC# = B.STATISTIC# AND S.SID = A.SID AND B.NAME = 'ssion cursor cache count') AA GROUP BY AA.USERNAME, AA.MACHINE ORDER BY AA.USERNAME, AA.MACHINE;7、查找數據庫各用戶各個終端的打開游標數

SELECT AA.USERNAME, AA.MACHINE, SUM(AA.VALUE) FROM (SELECT A.VALUE, S.MACHINE, S.USERNAME 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') AA GROUP BY AA.USERNAME, AA.MACHINE ORDER BY AA.USERNAME, AA.MACHINE;

后面會分享更多devops和DBA方面內容，感興趣的朋友可以關注下！