Replication Server has a net-change database that acts as an in-memory repository for storing the net row changes of a transaction, that is, the compiled transaction. There is one net-change database instance for each transaction. Replication Server allows external processes, to access net-change database instances. Each replicate table can have up to three tracking tables within a net-change database. You can inspect the net-change database and the tables within the database to monitor HVAR replication and troubleshoot problems.
Use the sysadmin cdb command to monitor a net-change database. See “sysadmin cdb,” in Chapter 3, “Replication Server Commands” in the Replication Server Reference Manual.