监控数据库

1.查看每个会话所占用的内存大小

SELECT   server, s.username, osuser, NAME, VALUE / 1024 / 1024 MB, s.SID, s.serial#, spid
    FROM v$session s, v$sesstat st, v$statname sn, v$process p
   WHERE st.SID = s.SID
     AND st.statistic# = sn.statistic#
     AND sn.NAME LIKE 'session pga memory'
     AND p.addr = s.paddr
   ORDER BY VALUE DESC;

2.查看当前会话的游标

SELECT * FROM V$OPEN_CURSOR WHERE USER_NAME = 'LABA_TEMP';
SELECT * FROM LABAC_ACCOUNT_COUPONS;
SELECT SUM(A.VALUE), B.NAME
  FROM V$SESSTAT A, V$STATNAME B
 WHERE A.STATISTIC# = B.STATISTIC#
   AND B.NAME = 'opened cursors current'
 GROUP BY B.NAME;