VMCD.ORG

Focus on DB architect mail:ylouis83#gmail.com

webm_v2 has been released

Posted by admin on October 21st, 2014

Webm_v2 was add oracle and mongodb monitor module

webm was agent uploaded mode to save statistics

we use mysql database as monitor server

w[......]

Read more

Posted in Architect, MYSQL, NoSQL, Oracle Experience | No Comments »

关于Dell 推出第13代服务器的一些想法

Posted by admin on September 12th, 2014

戴尔近日推出了旗下的13G服务器,其主力机型为R730xd,包含了诸多的特性,为其成为主流db server以及规模存储集群打下了良好的基础。

具体参考:http://www.storagereview.com/dell_poweredge_13g_r730xd_review
http://[......]

Read more

Tags:
Posted in MYSQL, NoSQL, Oracle Experience, Unix/Linux | No Comments »

关于Partial write for all MySQL and Oracle

Posted by admin on September 2nd, 2014

很久之前看过这个帖子,当时没有细究,这几天看了下mysql相关的internal 突然想起这个问题,跟三四个朋友讨论了下 想把这个问题展开讲一讲。

源帖子内容见:https://community.oracle.com/thread/1087650?start=0&tstart=0

这个[......]

Read more

Tags:
Posted in MYSQL, Oracle Experience | No Comments »

小型机迁移x86平台之老生常谈

Posted by admin on July 17th, 2014

You can view this presentation click here: x86_architect
注意使用chrome打开文件 不然可能乱码

Tags:
Posted in Oracle Experience, Unix/Linux | No Comments »

Good news for MySQL HA solutions

Posted by admin on June 9th, 2014


Oracle Clusterware is portable cluster software that allows clustering of independent servers so that they cooperate as a single system. Oracle Clus[......]

Read more

Tags:
Posted in MYSQL, Oracle Experience | No Comments »

[SHOUG] 1号店Exadata应用

Posted by admin on April 3rd, 2014

Download PDF: [SHOUG.LOUISLIU]Exadata在电商的实践

Tags:
Posted in Oracle Experience | No Comments »

Oracle DGHA architecture

Posted by admin on November 1st, 2013


Download this PDF

Tags:
Posted in Oracle Experience | No Comments »

[转] Autotrace with bind variables

Posted by admin on September 27th, 2013

JL刚刚写的一篇autotrace与bind variables 的行为:Autotrace trick
之前我们也发现过这个问题具体SR在这里:something seems confused

Tags:
Posted in Oracle Experience | No Comments »

CTAS导致严重BUG一则

Posted by admin on September 25th, 2013

某国内巨头的一起CASE,在系统繁忙情况下大量的CTAS 导致数据字典表的不一致,由原来10.0.2.4版本升级到10.0.2.5之后问题依旧。
具体表现为:
1. 尝试drop这些不一致的tablespace

15:00:18 SQL> @dropts_2012.0319.150[......]

Read more

Tags:
Posted in Oracle Experience | No Comments »

Think of bind value

Posted by admin on September 17th, 2013

Tags:
Posted in Oracle Experience | No Comments »