Im currently on an Oracle High Availibility course and picking up a few gems which I thought Id share...
- When setting up J2EE state clustering you have three communication approaches for replicating state ;
Generally Multicast is the easiest to setup and gives the best out of the box performance however with some tuning peer to peer is more efficient.
We now also have a database option where the state is saved to an Oracle database. This approach is the most reliable, however there is obviously a performance penalty for this.