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[......]
July 29, 2013 Exadata, oracle No comments Exadata
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[......]
July 5, 2013 12c, oracle No comments 12c new feature
1. create Pluggable database from NON_CDB database.
[oracle@db-42 ~]$ ora si SQL*Plus: Release 12.1.0.1.0 Production on Fri Jul 5 13:07:08 20[......]
July 4, 2013 advanced tech, oracle No comments training
最近做的一次内部交流文档[……]
July 3, 2013 12c, oracle No comments 12c new feature
根据JL,Glen Fawcett 的文章 oracle 从12c开始提供了3个视图来探测慢速的IO
SQL> desc V$LGWRIO_OUTLIER; Name Null? Type -----------------------------------[......]
June 27, 2013 12c, oracle 1 comment 12c new feature
首先我们看一组测试 数据库版本oracle 12c beta1
SQL> select count(*) from test; COUNT(*) ---------- 725888 SQL> set timing on; SQL> alter[......]
June 7, 2013 oracle, RAC No comments RAC
前天处理了一启RAC ASM 内存泄露问题,系统为公司最后一套RAC one node 版本为11.2.0.3
这套核心RAC one node系统出现大量 log file switch buffer busy waits等待,并伴随大量cursor: pin S wait on X re[……]
May 14, 2013 Internals, oracle No comments internal
April 11, 2013 11g, advanced tech, oracle No comments 11g new feature
By wwf from ebay COC about Optimizer in Oracle 11g.
[……]
March 14, 2013 Exadata, oracle No comments Exadata
ASR XD报警抛出如下错误
" dm01cel02: Hardware Error has been detected in the Flash Logs on the Cell Node dm01cel02: Please open up a Service Request[......]
January 23, 2013 oracle, replication No comments internal
11g ADG 给了大家更多的灾备选择,包括之前美国飓风,给了ADG大放光彩的机会,但是ADG并没有想象中的那么完美,以下是最近的一个CASE,具体过程不详写了,目前这个case还在跟进中,记录之:
[oracle@dcb-srv-0174 trace]$ cat itemstd02_ora_[......]