it is from http://www.adp-gmbh.ch/ora/sql/alter_system.html this is a good personal blog website! Alter system archive log [start|stop|all|...] alter system archive log all; alter system archive log next; alter system archive log sequence 104; alter
alter system set events 相关知识: 格式:alter system|session set events [eventnumber|immediate] trace name eventname [forever] [, level levelnumber] : --.' 通过:符号,可以连续设置多个事件,也可以通过连续使用alter session set events来设置多个事件. 格式说明:eventnumber指触发dump的事件号,事件号可以是Oracle错误
alter system switch logfile 是强制日志切换,不一定就归档当前的重做日志文件(若自动归档打开,就归档前的重做日志,若自动归档没有打开,就不归档当前重做日志.)alter system archive log current 是归档当前的重做日志文件,不管自动归档有没有打都归档.主要的区别在于:ALTER SYSTEM SWITCH LOGFILE对单实例数据库或RAC中的当前实例执行日志切换;而ALTER SYSTEM ARCHIVE LOG CURRENT会对数据库中
转自http://blog.csdn.net/rambo_china/archive/2010/03/25/5414949.aspxThe FLUSH SHARED POOL clause lets you clear all data from the shared pool in the system global area (SGA). The shared pool stores Cached data dictionary information and Shared SQL and