http://www.cnblogs.com/misc/专注于.NET技术zh-cnMon, 08 Sep 2008 18:48:26 GMTMon, 08 Sep 2008 18:48:26 GMT60http://www.cnblogs.com/weidong/archive/2008/09/09/1287213.html魏东魏东Mon, 08 Sep 2008 16:35:00 GMThttp://www.cnblogs.com/weidong/archive/2008/09/09/1287213.htmlhttp://www.cnblogs.com/weidong/comments/1287213.htmlhttp://www.cnblogs.com/weidong/archive/2008/09/09/1287213.html#Feedback0http://www.cnblogs.com/weidong/comments/commentRss/1287213.htmlhttp://www.cnblogs.com/weidong/services/trackbacks/1287213.html阅读全文

[新闻]淘宝与微软总部达成首次合作 Silverlight加入店铺]]>http://www.cnblogs.com/lotusswan/archive/2008/09/08/1287187.htmlArticles about .NETArticles about .NETMon, 08 Sep 2008 15:47:00 GMThttp://www.cnblogs.com/lotusswan/archive/2008/09/08/1287187.htmlhttp://www.cnblogs.com/lotusswan/comments/1287187.htmlhttp://www.cnblogs.com/lotusswan/archive/2008/09/08/1287187.html#Feedback0http://www.cnblogs.com/lotusswan/comments/commentRss/1287187.htmlhttp://www.cnblogs.com/lotusswan/services/trackbacks/1287187.html阅读全文

[新闻]苹果9日发布iTunes 8、iPhone 2.1和第四代iPod Nano]]>http://www.cnblogs.com/zhihui516/archive/2008/09/08/1287172.htmlangelingangelingMon, 08 Sep 2008 15:22:00 GMThttp://www.cnblogs.com/zhihui516/archive/2008/09/08/1287172.htmlhttp://www.cnblogs.com/zhihui516/comments/1287172.htmlhttp://www.cnblogs.com/zhihui516/archive/2008/09/08/1287172.html#Feedback0http://www.cnblogs.com/zhihui516/comments/commentRss/1287172.htmlhttp://www.cnblogs.com/zhihui516/services/trackbacks/1287172.html阅读全文

[新闻]微软出品8GB蓝色和120GB Zune播放器]]>http://www.cnblogs.com/shiyangxt/archive/2008/09/08/1287139.html施杨施杨Mon, 08 Sep 2008 14:30:00 GMThttp://www.cnblogs.com/shiyangxt/archive/2008/09/08/1287139.htmlhttp://www.cnblogs.com/shiyangxt/comments/1287139.htmlhttp://www.cnblogs.com/shiyangxt/archive/2008/09/08/1287139.html#Feedback0http://www.cnblogs.com/shiyangxt/comments/commentRss/1287139.htmlhttp://www.cnblogs.com/shiyangxt/services/trackbacks/1287139.html阅读全文

[新闻]千亿美元市值榜:微软居首移动第二 诺基亚退榜]]>http://www.cnblogs.com/jackyrong/archive/2008/09/08/1287117.htmljackyrong的世界jackyrong的世界Mon, 08 Sep 2008 13:39:00 GMThttp://www.cnblogs.com/jackyrong/archive/2008/09/08/1287117.htmlhttp://www.cnblogs.com/jackyrong/comments/1287117.htmlhttp://www.cnblogs.com/jackyrong/archive/2008/09/08/1287117.html#Feedback0http://www.cnblogs.com/jackyrong/comments/commentRss/1287117.htmlhttp://www.cnblogs.com/jackyrong/services/trackbacks/1287117.html推荐一个jquery做的很好的的投票效果，而且还有很详细的代码下载和分析，详见：
http://nettuts.com/javascript-ajax/creating-a-dynamic-poll-with-jquery-and-php/

[新闻]Google申请“海上数据中心”专利 可能付诸行动]]>http://www.cnblogs.com/lixiaoguang16/archive/2008/09/08/1286972.html刘爱华刘爱华Mon, 08 Sep 2008 09:45:00 GMThttp://www.cnblogs.com/lixiaoguang16/archive/2008/09/08/1286972.htmlhttp://www.cnblogs.com/lixiaoguang16/comments/1286972.htmlhttp://www.cnblogs.com/lixiaoguang16/archive/2008/09/08/1286972.html#Feedback0http://www.cnblogs.com/lixiaoguang16/comments/commentRss/1286972.htmlhttp://www.cnblogs.com/lixiaoguang16/services/trackbacks/1286972.html阅读全文

[新闻]用Google Earth实时追踪人造卫星]]>http://www.cnblogs.com/szyicol/archive/2008/09/08/1286961.html小隐任行小隐任行Mon, 08 Sep 2008 09:30:00 GMThttp://www.cnblogs.com/szyicol/archive/2008/09/08/1286961.htmlhttp://www.cnblogs.com/szyicol/comments/1286961.htmlhttp://www.cnblogs.com/szyicol/archive/2008/09/08/1286961.html#Feedback0http://www.cnblogs.com/szyicol/comments/commentRss/1286961.htmlhttp://www.cnblogs.com/szyicol/services/trackbacks/1286961.html阅读全文

[新闻]传IBM将以35亿美元至40亿美元收购北电]]>http://www.cnblogs.com/highhigh/archive/2008/09/08/1286955.html谁是菜鸟？谁是菜鸟？Mon, 08 Sep 2008 09:28:00 GMThttp://www.cnblogs.com/highhigh/archive/2008/09/08/1286955.htmlhttp://www.cnblogs.com/highhigh/comments/1286955.htmlhttp://www.cnblogs.com/highhigh/archive/2008/09/08/1286955.html#Feedback0http://www.cnblogs.com/highhigh/comments/commentRss/1286955.htmlhttp://www.cnblogs.com/highhigh/services/trackbacks/1286955.html阅读全文

[新闻]Google卫星已经开始工作]]>http://www.cnblogs.com/interboy/archive/2008/09/08/1286777.html冯东冯东Mon, 08 Sep 2008 06:52:00 GMThttp://www.cnblogs.com/interboy/archive/2008/09/08/1286777.htmlhttp://www.cnblogs.com/interboy/comments/1286777.htmlhttp://www.cnblogs.com/interboy/archive/2008/09/08/1286777.html#Feedback0http://www.cnblogs.com/interboy/comments/commentRss/1286777.htmlhttp://www.cnblogs.com/interboy/services/trackbacks/1286777.htmlselect max(sno) as sno from students;
程序取得sno然后插入
insert into students values(sno+1,...);
这种方法平时可能没有问题，但是存在这样一种情况A、B两个用户几乎同一时间操作，A先执行了select max(sno) 操作，在A取得最大学号但没有完成插入或者提骄傲操作时B也执行了select max(sno) 操作，此时A、B取到的 sno是一样的。但是这种情况是不允许出现的，怎样避免这种情况呢？
对选中的行上锁！
针对上面的sql语句需要小的改动
select sno from students sno=(select max(sno) from students) fro update;
这时Oracle将会锁定选中的行，如果没有commit活rollback操作的话，在他后面执行的语句将会陷入等待状态。这样就可以解决类似上面的问题了。A先执行了select max(sno) 操作，在A取得最大学号但没有完成插入或者提骄傲操作时B也执行了select max(sno) 操作，因为这一行被加上了串行锁，所以B用户只好等待，等A用户执行了commit操作，B用户才有返回结果，这样一来就避免了取得同一个值的问题。



[新闻]Chrome又曝漏洞 “保存为”功能“引狼入室”]]>http://www.cnblogs.com/gamefriends/archive/2008/09/08/1286687.html醉人的烟圈醉人的烟圈Mon, 08 Sep 2008 04:54:00 GMThttp://www.cnblogs.com/gamefriends/archive/2008/09/08/1286687.htmlhttp://www.cnblogs.com/gamefriends/comments/1286687.htmlhttp://www.cnblogs.com/gamefriends/archive/2008/09/08/1286687.html#Feedback1http://www.cnblogs.com/gamefriends/comments/commentRss/1286687.htmlhttp://www.cnblogs.com/gamefriends/services/trackbacks/1286687.html阅读全文

[新闻]测试版Office Live Workspace发布6月内用户数量达百万]]>http://www.cnblogs.com/gergro/archive/2008/09/08/1286508.htmlNew Yang Bo Element New Yang Bo Element Mon, 08 Sep 2008 00:23:00 GMThttp://www.cnblogs.com/gergro/archive/2008/09/08/1286508.htmlhttp://www.cnblogs.com/gergro/comments/1286508.htmlhttp://www.cnblogs.com/gergro/archive/2008/09/08/1286508.html#Feedback0http://www.cnblogs.com/gergro/comments/commentRss/1286508.htmlhttp://www.cnblogs.com/gergro/services/trackbacks/1286508.html阅读全文

[新闻]2008年9月8日科技博客精选]]>http://www.cnblogs.com/Java_Aix/archive/2008/09/07/1286452.htmldoudoudoudouSun, 07 Sep 2008 15:57:00 GMThttp://www.cnblogs.com/Java_Aix/archive/2008/09/07/1286452.htmlhttp://www.cnblogs.com/Java_Aix/comments/1286452.htmlhttp://www.cnblogs.com/Java_Aix/archive/2008/09/07/1286452.html#Feedback2http://www.cnblogs.com/Java_Aix/comments/commentRss/1286452.htmlhttp://www.cnblogs.com/Java_Aix/services/trackbacks/1286452.html阅读全文

[新闻]美大学在网上建虚拟校园开门授课]]>http://www.cnblogs.com/confach/archive/2008/09/07/1286439.htmlConfachConfachSun, 07 Sep 2008 15:15:00 GMThttp://www.cnblogs.com/confach/archive/2008/09/07/1286439.htmlhttp://www.cnblogs.com/confach/comments/1286439.htmlhttp://www.cnblogs.com/confach/archive/2008/09/07/1286439.html#Feedback0http://www.cnblogs.com/confach/comments/commentRss/1286439.htmlhttp://www.cnblogs.com/confach/services/trackbacks/1286439.html尚邮（Shangmail)使用评论的文章，内容包括：

• 安装配置
• gmail的设置以及带来的思考
• 优点和 缺点
• 尚邮不是真正的push mail
• 尚邮的客服服务

这5个方面的内容是我从经历所有版本的感想和经验。希望对大家有用。点击下面的地址是：
尚邮（Shangmail)使用评论或http://www.inblackberry.com/web/review/shangmail-review.html

希望对大家有帮助。不对之处，还望大家指出。

[新闻]JavaScript将成Silverlight的最大对手?]]>http://www.cnblogs.com/sdhjl2000/archive/2008/09/07/1286394.htmlsdhjl2000sdhjl2000Sun, 07 Sep 2008 14:05:00 GMThttp://www.cnblogs.com/sdhjl2000/archive/2008/09/07/1286394.htmlhttp://www.cnblogs.com/sdhjl2000/comments/1286394.htmlhttp://www.cnblogs.com/sdhjl2000/archive/2008/09/07/1286394.html#Feedback0http://www.cnblogs.com/sdhjl2000/comments/commentRss/1286394.htmlhttp://www.cnblogs.com/sdhjl2000/services/trackbacks/1286394.html阅读全文

[新闻]没有谷歌就活不下去的四个网站]]>http://www.cnblogs.com/lotusswan/archive/2008/09/07/1286341.htmlArticles about .NETArticles about .NETSun, 07 Sep 2008 12:09:00 GMThttp://www.cnblogs.com/lotusswan/archive/2008/09/07/1286341.htmlhttp://www.cnblogs.com/lotusswan/comments/1286341.htmlhttp://www.cnblogs.com/lotusswan/archive/2008/09/07/1286341.html#Feedback0http://www.cnblogs.com/lotusswan/comments/commentRss/1286341.htmlhttp://www.cnblogs.com/lotusswan/services/trackbacks/1286341.html阅读全文

[新闻]Google 10周岁生日]]>http://www.cnblogs.com/tyronedong/archive/2008/09/07/1286324.htmlTrone DongTrone DongSun, 07 Sep 2008 11:08:00 GMThttp://www.cnblogs.com/tyronedong/archive/2008/09/07/1286324.htmlhttp://www.cnblogs.com/tyronedong/comments/1286324.htmlhttp://www.cnblogs.com/tyronedong/archive/2008/09/07/1286324.html#Feedback0http://www.cnblogs.com/tyronedong/comments/commentRss/1286324.htmlhttp://www.cnblogs.com/tyronedong/services/trackbacks/1286324.html阅读全文

[新闻]祝Google 10周岁生日快乐]]>http://www.cnblogs.com/BotaoZhao/archive/2008/09/07/1286264.html赵波涛赵波涛Sun, 07 Sep 2008 08:40:00 GMThttp://www.cnblogs.com/BotaoZhao/archive/2008/09/07/1286264.htmlhttp://www.cnblogs.com/BotaoZhao/comments/1286264.htmlhttp://www.cnblogs.com/BotaoZhao/archive/2008/09/07/1286264.html#Feedback0http://www.cnblogs.com/BotaoZhao/comments/commentRss/1286264.htmlhttp://www.cnblogs.com/BotaoZhao/services/trackbacks/1286264.html阅读全文

[新闻]Google十年市值达1500亿美元 创造奇迹]]>http://www.cnblogs.com/beyondnet/archive/2008/09/07/1286257.html清道夫-WPF清道夫-WPFSun, 07 Sep 2008 08:27:00 GMThttp://www.cnblogs.com/beyondnet/archive/2008/09/07/1286257.htmlhttp://www.cnblogs.com/beyondnet/comments/1286257.htmlhttp://www.cnblogs.com/beyondnet/archive/2008/09/07/1286257.html#Feedback0http://www.cnblogs.com/beyondnet/comments/commentRss/1286257.htmlhttp://www.cnblogs.com/beyondnet/services/trackbacks/1286257.html阅读全文

[新闻]GMail:回过头来支持IE6]]>http://www.cnblogs.com/shiyangxt/archive/2008/09/07/1286152.html施杨施杨Sun, 07 Sep 2008 03:01:00 GMThttp://www.cnblogs.com/shiyangxt/archive/2008/09/07/1286152.htmlhttp://www.cnblogs.com/shiyangxt/comments/1286152.htmlhttp://www.cnblogs.com/shiyangxt/archive/2008/09/07/1286152.html#Feedback0http://www.cnblogs.com/shiyangxt/comments/commentRss/1286152.htmlhttp://www.cnblogs.com/shiyangxt/services/trackbacks/1286152.html#include<stdio.h>#include<stdlib.h>typedefstructLNode{intdata;structLNode*ne  阅读全文

[新闻]Google十年大变样]]>http://www.cnblogs.com/LIfelse/archive/2008/09/07/cscfg.html2008.5.122008.5.12Sun, 07 Sep 2008 02:15:00 GMThttp://www.cnblogs.com/LIfelse/archive/2008/09/07/cscfg.htmlhttp://www.cnblogs.com/LIfelse/comments/1286129.htmlhttp://www.cnblogs.com/LIfelse/archive/2008/09/07/cscfg.html#Feedback0http://www.cnblogs.com/LIfelse/comments/commentRss/1286129.htmlhttp://www.cnblogs.com/LIfelse/services/trackbacks/1286129.html阅读全文

[新闻]谷歌十年创新路]]>