>Does anyone know of a DBMS or utility that can proved the following form of replication:
>
>X node on network
>a copy of tables on each node
>changes can be made on any node
>changes must be replicated to all nodes
>nodes can be shutdown for indeterminate periods
>a dedicated server is not alowed

If it weren't for the last requirement, I can think of several solutions. Without at least one dedicated server, it's going to be very tough, since you need something to arbitrate transaction journalling and manage the replication process.

>
>This is for shared configuration databases for an HMI controlling turbine and compressor trains. Any individual unit may be shutdown. When the unit comes back up, it needs to update its tables with any changes made on another unit.