Limiting MDB to one instance per cluster

I'm working on a Weblogic setup that has one cluster consisting of three servers. We have one queue in particular whose MDB does a lot of database access. We're running into locking problems with the database because Weblogic is running an instance of the MDB on each of the three servers at the same time and they are stepping on each other's toes.
          I would like to limit the queue so it only runs on one server in the cluster. The pool size for this MDB is set to "1". I thought this would limit the total number of MDBs to one, but apparently it limits it to one per server.
          Any idea what sort of configuration I need to make sure only one instance of the MDB exists in the cluster? Do I need to turn this into a distributed queue and do something with load balancing?
          Thanks,
          Matt

Thanks for the reply.
          I looked around and I couldn't find a way to target the MDB to a specific server. I can target the JMS server, but not a single MDB. The way I have it setup currently, the JMS server is targeted to one server in the cluster (non-migratable).
          How do I target a MDB to a specific server?
          Matt

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Sure, if JVM uses native threads and the application itself is well-behaved
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          >>
          >> Richard Kemp <[email protected]> wrote: > For performance reasons, we
          > want to setup multiple instances of weblogic on
          >> each server in our cluster configuration.How is this handled in a cluster
          > configuration? Is each instance considered another
          >> server in the cluster? Does each require its on IP address, or is a
          > seperate port sufficient for each? Also, is there a way
          >> to configure the cluster w/o using multicast - there's issues with
          > supporing multicast on our backend network.Thanks, Rick
          >>
          >> --
          >> Dimitri
          Dimitri

Limiting MDB to one instance per cluster

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