Home Database Mysql Tutorial Oracle 10g Standby Database 实时应用 redo 数据

Oracle 10g Standby Database 实时应用 redo 数据

Jun 07, 2016 pm 04:42 PM
redo

启用实时应用, 日志应用服务会直接应用接收的redo 数据,而不需要等待当前standby redo log 归档,对于failover 和switchover 的

-------physical standby database:

real-time apply 需要配置 standby redo log;

启用实时应用,, 日志应用服务会直接应用接收的redo 数据,而不需要等待当前standby redo log 归档

对于failover 和switchover 的时间会大大的减小,因为在failover or switchover 时standby redo log 已经被应用到备库。

ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE;

-----For logical standby databases

ALTER DATABASE START LOGICAL STANDBY APPLY IMMEDIATE ;

Oracle 10g Standby Database 实时应用 redo 数据

standby 端 rfs (remote file server)进程 接收 primary 端 lgwr 传送过来的redo log,并把他们写到standby redo logfiles 中;

日志应用服务进程(log apply services)会在standby redolog 写满后应用redo 数据。

RMAN_RAC恢复至单机时Redo日志引发的“恐慌” 

Oracle RAC下调节Redo log file 文件大小

Oracle非关键文件恢复,Redo、临时文件、索引文件、密码文件

Oracle Redo Log 机制 小结

Oracle Redo log 大小及组数的设置(在线修改日志组数目及组成员个数)

current online Redo logfile 丢失的处理方法

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