[rules-users] BRMS in a WAS cluster

[Seema Manivannan]

Vikrant,

Thanks for the prompt reply. It would be surely helpful if you can post the
samples which worked for you. What are the license and support issues that
made you decide against BRMS? My understanding is that we need to enable
JackRabbit clustering when we have JackRabbit running in all nodes of the
app server cluster. Oracle RAD would handle only clustering at the DB level.
Please correct me if I'm wrong.

Thanks,
Seema

On Thu, Nov 13, 2008 at 1:18 PM, Vikrant Yagnick <VikrantY at mastek.com>wrote:

>  Hi Seema,
>
>
>
> We had initially tried using the BRMS for rules using WAS 6.1 and Oracle in
> clustered modes.
>
> While, we are not going for the BRMS right now due to license and support
> issues, from that experience I can answer some of the questions, below.
>
>
>
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Seema Manivannan
> *Sent:* Thursday, November 13, 2008 6:15 AM
> *To:* rules-users at lists.jboss.org
> *Subject:* Re: [rules-users] BRMS in a WAS cluster
>
>
>
> hi,
>
> I would appreciate any replies at least confirming that my approach below
> is right.
>
> Thanks,
> Seema
>
> On Sun, Nov 9, 2008 at 11:16 PM, seemamani <seemamani at gmail.com> wrote:
>
>
> We use Drools 4.0.7 in our application which is deployed on a WAS 6.1
> cluster
> and it is working fine. Now we want to deploy the Drools BRMS also in the
> WAS cluster. I went through the Drools and Jackrabbit mailing lists and
> documentation. Please confirm if my understanding of how this can be
> implemented is correct.
>
> 1. By default, JackRabbit uses Apache Derby in-memory database which does
> not support clustering
>
>
>
> That is correct
>
>
>
>
> 2. We need to configure a persistence manager in JackRabbit that stores
> data
> in a RDBMS like Oracle
>
>
>
>
>
> Yes. If you need a sample, I can send it to you. (Though, I am sure there
> is a lot of material on this on the web).
>
>
> 3. I need to follow the instructions for JackRabbit clustering given here
> http://wiki.apache.org/jackrabbit/Clustering
>
>
>
> I am not sure, why you need Jack Rabbit clustering. If the tables are
> stored in the database, then I am assuming RAC should handle clustering at
> the DB level.  Though, do correct me if I am wrong.
>
>
>
>
> 4.  Also, the Drools documentation says that "The BRMS will create the
> tables the first time it is started up if it is running against a fresh
> (empty) RDBMS - so its important to note that the user credentials supplied
> have permissions to create tables (at least initially, on first run, after
> that they could be locked down)."
> Is it not possible to create the Oracle tables before running the BRMS (we
> have permission issues in creating the tables from the application)? I
> assume that the DDL for creating the tables is available with the
> JackRabbit
> distribution.
>
>
>
> One Q&D way may be to just create the tables in a test database and then
> make the schema into DDL scripts for use before installation.
>
>
>
>
> 5. Is there anything else I'm missing? Will BRMS work fine in the cluster
> with the above setup?
>
>
>
> My assumption is that the BRMS is just a web-app using the database as it's
> back-end and hence do not know of any issues it could face.
>
> Thanks,
> Seema
> --
> View this message in context:
> http://www.nabble.com/BRMS-in-a-WAS-cluster-tp20408825p20408825.html
> Sent from the drools - user mailing list archive at Nabble.com.
>
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