redo的构成
To illustrate the creation of change vectors and redo records, consider the following transaction:ØSQL> update emp set empno = 22 where empno = 11 ØWhen this update statement is executed...
查询所有数据字典的SQL
select * from dic;
关于监听不能启动的解决方法
在windows服务中启动listener服务时,如果报错说:系统找不到指定路径......,按下面步骤试试看能否解决:1. 开始->运行->输入:regedit,打开注册表2. 找到: HKEY_LOCAL_MACHINE-->SYSTEM-->ControlSet001-->Service...