Comments on: Oracle Coherence vs. Oracle RAC or Coherence + MySQL = MySQL RAC?

By: Amir Riaz

Amir Riaz — Sat, 23 Jul 2011 06:27:49 +0000

I was looking at the possibilities of reducing the costs. when i found this article.

With obiee 11g Oracle has a OFM which require database. if you are cluster the obiee for high availabilities you need mysql or Oracle clustering. I dont like the mysql cluster. so Question:

Is there any chance we can replace mysql cluster or offload mysql activities to Oracle Coherence. My client already have this product so we can save cost and increase performance.

By: Alex Gorbachev

Alex Gorbachev — Sat, 26 Jan 2008 16:23:14 +0000

Marco, keep us posted how your search is going… ;-) I’d be very interesting in the conclusions.

By: Marco Gralike

Marco Gralike — Mon, 21 Jan 2008 22:56:17 +0000

MySQL is now out of the picture… Long life BerkelyDB/TimesTen/Oracle Light, you get my drift

Funny I came here to find coherence alternatives (as a replacement for RAC that is).

:-)

By: Cameron Purdy

Cameron Purdy — Mon, 18 Jun 2007 23:31:53 +0000

> On the other hand, looks like a clustering framework with rules
> defined by developers

Hi Alex – Think of it like defining a database schema, but instead, you are simply naming collections of objects that you want to manage in a scale-out middle tier. I’d be glad to introduce you to one of our solutions architects to talk through how to use it.

Peace,

Cameron Purdy
Oracle (formerly Tangosol)

By: Alex Gorbachev

Alex Gorbachev — Thu, 14 Jun 2007 14:50:50 +0000

Thanks for mentioning it Ari.

By: Ari Zilka

Ari Zilka — Thu, 14 Jun 2007 08:38:50 +0000

Terracotta provides a way to scale the middle tier w/o RAC and yet it is still more black box like RAC because it acts as network attached memory for Java applications, as they are already written. Worth a look.

By: Gregory

Gregory — Sat, 09 Jun 2007 17:09:39 +0000

Alex,

I did (a few month ago) develop with Jdev and Coherence for Java… And my point of view Coherence is more something that would more compete T10 (and MySQL) than RAC and Database. But I also agree with you for most of the RAC points :
- If you develop with Coherence you should be able to move the workload from the database to the client
- If you develop with Coherence you should be able to provide a way to continue to deliver a service in case of a node/system crash

But… This also means develop with Coherence/JCache and not RDBMS ! Where you can imagine ;-D smoothly go from a XE to a RAC database !

For a short example of developing a Java Coherence Application see (sorry it’s written in French !) :
http://arkzoyd.blogspot.com/2007/03/jdeveloper-et-coherence-premier-pas.html

Gregory