Hi,
thx for all the replies. We do run a rs_subcmp on our DB before we switch Active and Standby. For a DB of 36GB, it takes 5-6 hours. Not that bad hugh?
I'll guess we need to run the compare more often just to be sure. I notice that there is a Replication Server Data Assurance. It seems a great tool, but the advantage of the subcmp-tool is that is so easy to use, no setups of configuration servers needed, it just runs 
I thought DA comes with the RS license?