Hello, Radek Rodak
I was too busy to give you a reply~thanks for your advice.
I know there are other method to achieve HA :) , but... someone just want to try the live-backup failover.
Now, I had already make the backup server become live.
I just add some backup server's configurations(with HashMap and TransportConfiguration) in MDBClient.java.
Then, after failover occured, backup server will become live, but the backup server will not redeploy the MDBcase application.
That means the status of deployments is still failed, so I need to redeploy it by myself.
Do you know how to make the backup server redeploy its applications automatically when it become live?
Thanks for your help!