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Java EE (9) -- JDBC & JTA
Connection接口中定义了5中隔离级别常量Connection.TRANSACTION_NONE -- 不支持事务Connection.TRANSACTION_READ_UNCOMMITTED -- 脏读(事务回滚造成别的事务读取到的数据不准确),不可重复读和幻读均可发生Connection....
分类:数据库   时间:2015-10-09 13:35:19    阅读次数:284
【SQL】事务
1.事务的开始结束:START TRANSACTION :标记事务开始COMMIT :标记事务成功结束ROLLBACK :标记事务夭折2.设定事务只读、读写性质:SET TRANSACTION READ ONLY:设定事务为只读事务SET TRANSACTION READ WRITE : (默认状态...
分类:数据库   时间:2015-10-08 23:06:38    阅读次数:183
zoj 3819 Average Score
Average ScoreTime Limit: 2 Seconds Memory Limit: 65536 KBBob is a freshman in Marjar University. He is clever and diligent. However, he is not good a....
分类:其他好文   时间:2015-10-08 20:02:05    阅读次数:275
CAT Build Status(转存)
https://github.com/dianping/catCATCAT基于Java开发的实时应用监控平台,包括实时应用监控,业务监控。[2013-01-06]CAT支持的监控消息类型包括:Transaction适合记录跨越系统边界的程序访问行为,比如远程调用,数据库调用,也适合执行时间较长的业务...
分类:其他好文   时间:2015-10-08 16:05:07    阅读次数:147
ocp-170
QUESTION NO: 170 What methods of point-in-time recovery are available? (Choose all that apply.)A. Change-based B. Cancel-based C. Time-based D. Sequence number-based E. Transaction number-base...
分类:其他好文   时间:2015-10-07 18:59:33    阅读次数:290
ZOJ3819 ACM-ICPC 2014 亚洲区域赛的比赛现场牡丹江司A称号 Average Score 注册标题
Average ScoreTime Limit:2 Seconds Memory Limit:131072 KBBob is a freshman in Marjar University. He is clever and diligent. However, he is not good at ...
分类:其他好文   时间:2015-10-05 20:39:41    阅读次数:184
ocp-114
QUESTION NO: 114 A user performs an update on a table. Shortly after committing the transaction, they realize that they had an error in their WHERE clause causing the wrong rows to be updated. Which...
分类:其他好文   时间:2015-10-05 13:05:26    阅读次数:134
条款9:绝不要在构造以及析构函数中调用虚函数
在构造以及析构函数期间不要调用virtual函数,因为这类调用从不下降到derived class中。例如说下面这个例子: 1 class Transaction{ 2 public: 3 Transaction(); 4 virtual void logTransactions()...
分类:其他好文   时间:2015-10-05 12:50:40    阅读次数:139
ocp-v13-063
QUESTION 63 Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transactions? A. point-in-time recovery B. execute the ROLLBA...
分类:其他好文   时间:2015-09-30 11:16:27    阅读次数:138
Linux常用性能检测命令解释
1、uptime[root@smgsim02 ~]# uptime15:08:15 up 98 days, 4:19, 2 users, load average: 0.07, 0.29, 0.14当前时间 系统运行至今的时间 多少用户登录当前系统 分别是1分钟,5分钟,15分钟前至今的负载情况lo...
分类:系统相关   时间:2015-09-29 13:00:49    阅读次数:276
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