Re: Migrating to Oracle on Windows

From: Mladen Gogala <mgogala.SPAM_ME.NOT_at_verizon.net>
Date: Mon, 21 May 2007 13:28:36 GMT
Message-ID: <pan.2007.05.21.13.28.36@verizon.net>

On Sun, 20 May 2007 12:10:51 -0700, hasta_l3 wrote:

> Hmm.. Not sure what you mean here, Mladen. Memory-mapped files can be
> used to share memory between processes.

There are no calls like shmat, shmget or shmdet. Moreover, memory mapped files are not shared in real time. For the change to be visible by other processes, it has first to be flushed to the disk. This type of sharing is completely inadequate. What is needed are standard IPC primitives, not supported by windows. That is why Oracle has multi-threaded architecture on Windows, as opposed to the independent processes everywhere else.

-- 
http://www.mladen-gogala.com

Received on Mon May 21 2007 - 08:28:36 CDT