Fellow Orion-ers, We are currently evaluating the Orion server for a mission-critical production application. However, we are uncertain as to the need for a backing database. We require a high availability environment providing failover to another box/server (we will have 2 boxes per "system") in the event of a failure. It appears that the database is only required for HTTP Session state replication and possibly for Entity EJBs. Can anyone confirm/clarify this? We will be using JMS within the App Server (possibly with MessageDrivenBeans) and require guaranteed delivery for most messages. Can anyone tell me if this persistence/durability is provided with a file or DB ... or either? If it's all file based, then fault tolerence across boxes becomes an issue in the case of a corrupt file system. Does anyone out there have any experience and/or references regarding what the Orion distributed, fault tolerant, HA queue/topic solution is??!! I am unable to find much on their web site ... or in the user group emails. I understand that the Hypersonic DB ships with the Orion dev version ... does anyone know if it is included with the purchased product? What is the advantage of Hypersonic over, let's say, an Empress DB? Thanks, Mike Courtney
