摘要: 之前也整理过一篇文章来说明Oracle Lock的,参考: 锁 死锁 阻塞 Latch 等待 详解 http://blog.csdn.net/tianlesoftware/archive/2010/08/19/5822674.aspx在这篇文章里,提到了System Locks,它包含: (1)Latches (2)Mutexes (3)Internal Locks一. 官方文档上关于Mutex 的说明如下Mutexes A mutual exclusion object (mutex) is a low-level mechanism that prevents an object in m 阅读全文
posted @ 2011-05-30 20:39 hibernate我最强 阅读(193) 评论(0) 推荐(0) 编辑
摘要: 关于Oracle 临时表,参考我的Blog: Oracle 临时表 http://blog.csdn.net/tianlesoftware/archive/2009/10/20/4705283.aspx对Oracle 临时表的操作,会产生redo 和undo。先看一个示例:SYS@anqing1(rac1)> CREATE GLOBAL TEMPORARY TABLE dave_test (id number,name varchar2(20)) ON COMMIT DELETE ROWS;Table created.SYS@anqing1(rac1)> set autotrace 阅读全文
posted @ 2011-05-30 14:57 hibernate我最强 阅读(163) 评论(0) 推荐(0) 编辑