针对exadata最近频繁报出的IO error,做如下总结
data node alert
ORA-27603: 单元存储 I/O 错误, I/O 在磁盘 o/192.168.10.5/DATA_DM01_CD_08_dm01cel03 上失败, 偏移量 17331625984 (数[......]
Some exadata disk tips
July 29, 2013 Exadata, oracle No comments Exadata
Update exadata flash disk firmware due to poor performance on X2-2
March 14, 2013 Exadata, oracle No comments Exadata
ASR XD报警抛出如下错误
" dm01cel02: Hardware Error has been detected in the Flash Logs on the Cell Node dm01cel02: Please open up a Service Request[......]
Exadata X2-2 Hang死一例
November 3, 2012 Exadata, oracle No comments Exadata
Exadata不是万能的 一直觉得xd DB端的服务器太差,但是oracle总是可以理直气壮的说我们卖的不是硬件是软件.垃圾SQL压死Exadata还是很容易的
系统为X2-2 Quarter rack Red Hat Enterprise Linux Server release 5.7 ([......]
Oracle Platinum Services
October 23, 2012 Exadata, oracle No comments Exadata
Oracle的白金服务是一种Oracle标准支持下的特殊权利，为客户提供标准合同范畴外的额外服务，以最大的提升Exadata的用户的客户体验,生产机器将在oracle所提供的标准化配置中与oracle总部的call center保持双向连通。Oracle的白金服务代表了一种新的模式，为客户提供了可以[……]
Exadata Smart Flash Logging
September 5, 2012 Exadata, oracle No comments Exadata
Oracle Exadata 从 11.2.2.4.0开始引入了 Smart Flash Logging的新特性，在exadata环境中,当oracle 需要写入日志的时候将会启动parallel write 同时在 disk 和 flash两端写入数据,controller中有任意一个率先写完就会[……]
Exadata offloading and Smart Scan
August 25, 2012 Exadata, oracle No comments Exadata
Exadata migration tips
August 7, 2012 Exadata, migration, oracle No comments Exadata
Exadata migration完成 目前采用的是物理DG switch over的方式 采用11g active duplicate 实现整个数据大小为2T左右 总共耗时约为10个小时 每秒达到近60M
采取这种方法的好处为：
1:主库无需停机
2:可以采用exadata最佳性能AU_SI[……]
Some Exadata Docs
July 15, 2012 Exadata, oracle No comments Exadata
Exadata RDS
July 10, 2012 Exadata, oracle No comments Exadata
Oracle RAC RDS reference:
Oracle Real Application Clusters (RAC) allows Oracle Database to run any packaged or custom application, unchanged acro[……]
新到两台x2-2
May 29, 2012 Exadata, oracle 3 comments Exadata
