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Re: Oracle alternatives

From: Sean Hull <>
Date: Sat, 7 May 2005 17:45:05 -0400 (EDT)
Message-ID: <>

> 1) There is an article on Postgres replication in the current issue
> (June 2005) of Linux Journal, "Database Replication with Slony-l", and
> I wonder if you could comment?
> PS: I mean technically, not about a product that sounds like slow-ny. ;-)

I'm a big Linux Journal reader myself. When I saw the Postgres replication article I jumped right to it. But when I got this part I was a bit concerned:
"Again, by examining the content of the contact table of contactdb_slave database, you will notice that the row was removed from the slave node correctly. -- Instead of comparing the information for contactdb and contactdb_slave manually, we easily an automate this process with a smiple script, as shown in Listing 3. Such a scriptcould be executed regularly to ensure that all nodes are in sync, notifying the administrator if that is no longer the case."

Of course they're talking about master-slave replication, so if they get out of sync, then the admin can resync from the master again.

> 2) Another article in the same mag, "ATA over Ethernet", e.g. AoE
> spec, using Coraid EtherDrive shelf looks interesting too. I'd like to
> test a couple node 10g RAC database with the EtherDrive evaluation kit
> (single ATA drive on AoE) instead of firewire, etc. AoE works with a
> cluster filesystem but not with software RAID in a cluster. These guys
> do have a RAIDblade to avoid software RAID. Whatever, its interesting

Yep, I tore this article out. It's on my todo list to get RAC running on this too.


Sean Hull, Senior Consultant
Heavyweight Internet Group
Rockefeller Center, Box 5352
New York, NY 10185 
voice: 646.827.9877x23 fax: 646.827.3434

Sean Hull, founder and senior consultant of Heavyweight Internet Group
is the author of O'Reilly and Associates "Oracle and Open Source"
bridging Open Source software and integration with the world's best
performing database, Oracle.  
Received on Sat May 07 2005 - 17:49:33 CDT

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