Arent

[vijayk]

Hello,

I have a cluster of JBoss-3.2.6 nodes that work well for me. My JMS datasource for each node is DefaultDS (so messages get stored locally).

When I lookup HA-JNDI and post a message to a topic, it gets stored in the local database (hypersonic) of the Master Node, which is what I expect. However in case of a fail-over, the messages do not get moved to the database of the node that becomes the Master.

1. Do I *need* a shared datasource ??
2. Is there a way that I can get local databases (hypersonic) on each node to be in sync?

I ask this because if I have to use a shared DB, I need to make that DB clustered in order to have a true HA system!

Thank you,
Vijay Kandy

[razor_harm]

Yes, you need a single database for the clustered HA-JMS queue.

Also see: http://www.jboss.org/wiki/Wiki.jsp?page=JBossMQHA

[vijayk]

Thank you for your reply. I read Wiki and understand that a single database is required. But what if that database goes down?

My question is - is there a way to insert messages in to 2 databases instead of just one? That way I can be sure that no messages get lost.

Regards,
Vijay Kandy

[razor_harm]

"vijayk" wrote:
Thank you for your reply. I read Wiki and understand that a single database is required. But what if that database goes down?

My question is - is there a way to insert messages in to 2 databases instead of just one? That way I can be sure that no messages get lost.

Yes, you need to cluster your database. For example Oracle provides this functionality (using the thick client driver).