> I have seen that Holger Klemt has some sort of scripting mechanism using IBExpert and scripts that he uses for clustering - which I think would be a good way to handle OLTP. That way one database in the cluster could be taken offline if necessary - I know it isn't always necessary(!!!!) - and restored if there were ever a problem.

Holger Klemt has some king of replication, made completely in PSQL.
Actually, "replication" is a keyword for you to feed Google.

SY, SD.