该软件由两部分组成：MHA Manager（管理节点）和MHA Node（数据节点）。MHA Manager可以单独部署在一台独立的机器上管理多个master-slave集群，也可以部署在一台slave节点上。MHA Node运行在每台MySQL服务器上，MHA Manager会定时探测集群中的master节点，当master出现故障时，它可以自动将最新数据的slave提升为新的master，然后将所有其他的slave重新指向新的master。整个故障转移过程对应用程序完全透明。
DB2个人版是单用户版本的DB2。可以使用它来创建和管理本地数据库，或者作为客 户机与DB2数据库服务器和DB2 Connect服务器连接。
This document is for folks who are interested in understanding OCFS internals. It wasn’t planned to actually write a design document, but I did this out of my interest to help folks who are interested in understanding how OCFS works. I have put this information in writing while I was walking through the code (ocfs version 1.0.9-9) and understanding how OCFS is implemented.
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This talk will review the various components of the OCFS2 stack, with a focus on the file system and its clustering aspects. OCFS2 extends many local file system features to the cluster, some of the more interesting of which are posix unlink semantics, data consistency,shared readable mmap, etc.
The idea for Automatic Storage Management (ASM) first occurred to me in early 1996. A computer manufacturer that I was visiting gave me a presentation on a filesystem for video serving. The manufacturer’s plan was to put one or two full-length movies on a single physical disk. The company would make a new copy of the movie for every 10 viewers. The next day I was thinking about this and realized that the plan could not work. I came to the conclusion that the only workable solution was to stripe the movies across a large number of disks with a very large stripe. I was not the first person to figure this out. That was the basic strategy behind the Oracle video server, but I did not know that then.
Oracle Core很可能是未来十年关于Oracle内部原理最好的书。 作者在第一章从一个简化的原理图出发，做了一个轻松的开始，后面7个章节的内容密度却让人惊叹，对我自己而言，读到第三遍之后，才把前后各个知识点联系起来。除了知识本身，Jonathan所展示的他研究Oracle的思路和方法或许更有借鉴意义。
6\m8O:F.7a)K9CM\m DB2® X5}]b\m53(RDBMS)z7y hDE","|(PX}]bF.MhFDE"#
This IBM Redbook is the result of a residency project conducted at the IBM International Technical Support Organization, San Jose Center. The project tested and implemented stored procedures executing in DB2 for OS/390, DB2 for Windows NT, DB2 UDB for AIX, and DB2 for AS/400 servers. Information is provided to guide the reader through the steps required to implement stored procedures. The material is based on the actual tests performed and experience gained during the project.
本文档主要介绍了 RoseHA 配合 Oracle 11g 的安装及应用的高可用配置过程，用户可以根据文档，逐步完成 RoseHA 集群的配置，本文档以 RoseHA 配合 Oracle 11g 为例。
RAC 就是 real application clusters 的缩写，跟 rack 的读音同 Oracle Real Application Clusters (RAC)可以支持 24 x 7 有效的数据库应用系统，您可以在由低成本的服务器构成的高可用性系统上自由部署您的应用，而无需修改您的应用程序，使用 RAC 无需再为成本而牺牲性能和可靠性