Replication Agent for DB2 UDB does not require access to the Replication Server System Database (RSSD).
However, you can reduce the amount of data between the Replication Agent for DB2 UDB and Replication Server by using an RSSD.
If the LTMCFG parameter, Use_repdef=Y, replication definitions are loaded when Replication Agent for DB2 UDB starts. If the replication definition is changed, stop and restart the Replication Agent in order for the Replication Agent to recognize the changes.
The information needed to connect to the RSSD is provided in the LTMCFG file. The parameters will all begin with RSSD, and all parameters must be entered. However, they are not verified if Use_repdef is set to N.