linux系统集群的困惑

目前系统的情况是这样的操作系统为linux软件为一套workflow+其他web模块,服务器为weblogic,数据库为oracle.客户要求应用服务器必须做成集群(nnd商务随便接单签合同).目前的困难是workflow系统在服务器启动的时候把流程的状态缓存到内存中,以后流程的状态的改变后写到数据库中.但是不主动从内存数据库中取流程的状态,知道下次重启时.
这样的集群weblogic无能为力.
我想是否可以做linux的集群.由于对操作系统的集群不是很了解.linux集群是否可以做到两台机器的内存时一致的?
各位怎么看?

两台机器内存同步是不可能啦。
而且这应该是工作流程序设计的问题，最好是修改工作流的程序。

Open MOSIX

MOSIX可以做到进程状态同步吗？如果可以做到的话，就要好好研究一下。

What is openMosix?
openMosix is a Linux kernel extension for single-system image clustering.  This kernel extension turns a network of ordinary computers into a supercomputer for Linux applications.

Once you have installed openMosix, the nodes in the cluster start talking to one another and the cluster adapts itself to the workload. Processes originating from any one node, if that node is too busy compared to others, can migrate to any other node. openMosix continuously attempts to optimize the resource allocation.

We achieve this with a kernel patch for Linux, creating a reliable, fast and cost-efficient SSI clustering platform that is linearly scalable and adaptive. With openMosix' Auto Discovery, a new node can be added while the cluster is running and the cluster will automatically begin to use the new resources.

There is no need to program applications specifically for openMosix. Since all openMosix extensions are inside the kernel, every Linux application automatically and transparently benefits from the distributed computing concept of openMosix. The cluster behaves much as does a Symmetric Multi-Processor, but this solution scales to well over a thousand nodes which can themselves be SMPs.

The openMosix Community is very active, contributing add-on applications and sharing helpful information with all users.  The openMosix Add-Ons and Community page lists these shared applications.  And, it is all GPL'd.

这个东西太cool了，可惜目前还不支持2.6的内核。