摘要: SET TIMING ON SERVEROUTPUT ON DECLARE v_count NUMBER(10); BEGIN SELECT COUNT(rowid) INTO v_count FROM person WHERE gender = 'F' AND activity_id = '11' AND hair_color = 'BLONDE' AND age = 34 A... 阅读全文
posted @ 2009-06-11 14:42 meetrice 阅读(478) 评论(0) 推荐(0)
摘要: =================================一、要找出最耗资源的sql我们可以首先使用top等工具,找到最好资源的进程(记住进程号),例如,操作系统进程号为2796,然后根据这个进程号(v$process.spid)在v$process中找到进程地址(v$process.addr),然后根据这个地址在v$session中找到相应的sid(v$session.sid),然后根据... 阅读全文
posted @ 2009-06-11 14:41 meetrice 阅读(1264) 评论(0) 推荐(0)